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Analysis Patterns Video 1 Lecture 1
 
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http://patternsinsoftwareengineering.wordpress.com
Views: 686 Ahmet Kutsi Nircan
Introduction to Design Patterns
 
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Text version of the video http://csharp-video-tutorials.blogspot.com/2017/05/introduction-to-design-patterns.html Slides http://csharp-video-tutorials.blogspot.com/2017/05/introduction-to-design-patterns_4.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists In this tutorial we will discuss 1. What are Design Patterns 2. Evolution of Design Patterns 3. The three categories of design patterns In many interviews you might have encountered lot of questions related to interfaces, abstract classes, delegates and other features related to object oriented programming along with the design pattern related questions. Design patterns solutions are evolved from the features of object oriented programming. Once you understand the design patterns, it makes you very comfortable in attending interviews as well as applying these features with confidence in your projects or applications. Implementing design patterns in the applications are proven and tested. Writing the code aligning with design patterns will make your applications Reliable,Scalable and Maintainable. What are Design Patterns Design patterns are reusable solutions to the problems that we encounter in the day to day programming. They are generally targeted at solving the problems of object generation and integration. In other words, Design patterns acts as templates which can be applied to the real-world programming problems. History and evolution of design Patterns The four authors of the book famously know as Gang of four are the ones who brought the concepts of design patterns in their book “Elements of reusable Object-Oriented software” . Gang of Four has divided the book into two parts with first part explaining about the pros and cons of object oriented programming and the second part describes the evolution of 23 classic software design patterns. For more details, please refer to the following wikipedia article https://en.wikipedia.org/wiki/Design_Patterns Types of Design Patterns Gang of Four have categorised the design patterns in to 3 types based on different problems encountered in the real world applications. They are Creational, Structural and Behavioural. Creational design patterns : These patterns deal with object creation and initialization. Creational pattern gives the program more flexibility in deciding which objects need to be created for a given case. Examples of Creational design patterns category : Singleton , Factory and Abstract Factory etc. Structural design patterns : This pattern deals with class and object composition. In simple words, This pattern focuses on decoupling interface, implementation of classes and its objects. Examples of Structural design patterns category : Adapter, Facade and Bridge etc. Behavioural design patterns : These patterns deal with communication between Classes and objects. Examples of Behavioural design patterns : Chain of Responsibility, Command and Interpreter etc. For understanding design patterns better it is very important to have basic knowledge about the following object oriented concepts 1. Abstraction 2. Inheritance 3. Polymorphism 4. Encapsulation 5. Interfaces 6. Classes 7. Abstract classes In Part 2 we will focus on the Singleton design pattern in detail with a simple example.
Views: 224629 kudvenkat
Software Reuse
 
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Reusable components as a concept has been discussed since the early days of computers. There have been few commercially successful libraries of software components and many organizations have attempted to develop their own specific set of useful artifacts. Yet these have never fully given the benefits of shorter time to market, flexibility of construction, and faster response to changes in business operations. Barriers within the IT development groups and the software construction business in general are significant. But they can be overcome. New software development approaches such as component-based development, mean that component construction and reuse is back on the agenda; but IT management need to grasp the initiative. This module details a successful initiative for IT managers and developers to regain control over the development process and greatly increase the productivity of development groups. Presenter: Phil Webb
Views: 6650 SelectBusinessSolns
Point Pattern Analysis Part 1: Spatial Processes
 
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This presentation provides an introduction to spatial processes and different ways to characterize spatial point patterns including descriptive and inferential spatial statistics. This video presentation was created as part of a peer-reviewed educational series of Reusable Learning Objects (RLOs) on Spatial Analysis. The full suite of presentations can be accessed at http://ecolearnit.ifas.ufl.edu/. For more information on the state-wide and online Geomatics program at the University of Florida, please visit us at http://flrec.ifas.ufl.edu/geomatics/ (Fort Lauderdale campus) or http://sfrc.ifas.ufl.edu/geomatics/ (Gainesville campus).
Design Patterns in GameDev
 
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This is a high level video introducing the concept of design patterns. A few of the resources mentioned in the video. Book Links ( w/ affiliate link BTW) Design Patterns Book ( http://amzn.to/2pev44l ) Game Programming Patterns Book ( http://amzn.to/2oSlvHh ) Game Programming Patterns Web Version ( http://gameprogrammingpatterns.com/contents.html ) Gang of Four C# Patterns ( http://www.dofactory.com/net/design-patterns ) Let me know if you want a specific tutorial on an individual pattern
Views: 7481 Gamefromscratch
Point Pattern Analysis Part 5: Kernel Density Estimation
 
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This presentation provides an introduction to kernel density estimation (KDE) techniques for visualizing event densities in maps. This video presentation was created as part of a peer-reviewed educational series of Reusable Learning Objects (RLOs) on Spatial Analysis. The full suite of presentations can be accessed at http://ecolearnit.ifas.ufl.edu/. For more information on the state-wide and online Geomatics program at the University of Florida, please visit us at http://flrec.ifas.ufl.edu/geomatics/ (Fort Lauderdale campus) or http://sfrc.ifas.ufl.edu/geomatics/ (Gainesville campus).
Twenty years of Design Patterns - Ralph E. Johnson (GoF author) - SugarLoafPLoP 2014
 
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Talk from SugarLoafPLoP 2014 - http://hillside.net/sugarloafplop/ Abstract: "Design Patterns", by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides, was released in October, 1994. It has continued to sell for 20 years and has had a big impact. Twenty years after it came out, some of the patterns continue to be important, some less important. New patterns have arisen that have displaced some of the older patterns. There are common ways that the patterns are misused. Ralph Johnson will talk about what he has learned about the patterns since the book was published. Biography: Ralph Johnson is one of four coauthors of "Design Patterns" and the leader of the group that built the first refactoring tool, the Smalltalk Refactoring Browser. He is still working on patterns and program transformation, though the spotlight has shifted off of basic object-oriented design to topics like parallel programming and innovative ways of making business software. He joined the Department of Computer Science at the University of Illinois at Urbana-Champaign in 1985, and retired recently to work on a system for automating business transactions.
Views: 14363 Eduardo Guerra
Object Oriented Design Patterns
 
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http://www.zaneacademy.com | Creational Object Oriented Design Patterns | Structural Object Oriented Design Patterns | Behavioral Object Oriented Design Patterns | Basic Object Oriented Design Patterns | download code @ http://sites.fastspring.com/zaneacademy/product/all
Views: 8529 ZA Shortcuts
CATIA V5 DELETE USELESS ELEMENT AND PARAMETERIZATION ANALYSIS AND DESK CATDUAV5
 
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https://www.youtube.com/channel/UCrXam4d_zjV0Mz3eEGGrwxg CATIA V5 DELETE USELESS ELEMENT AND PARAMETERIZATION ANALYSIS AND DESK CATDUAV5
Views: 1990 karthik R
What is Gang of Four GOF?
 
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What is Gang of Four GOF? Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited
Information Technology & Software Engineering Mock Interview 12 of 28
 
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Realistic Information Technology & Software Engineering Interviews: 12 of 28 - Object Oriented Modelling & Design, Concurrent and Distributed Programming, and Operations Research. For infinite number of professional interviews (Exactly as you experience in professional companies - Technical + HR), visit https://InterviewMax.com. This interview series covers graduate syllabus and the syllabus of Masters degree to a great extent. For example, the key topics like, UML design diagrams, Unified Process, UML diagrams, Use Case, Class Diagrams, Interaction Diagrams, State Diagrams, Activity Diagrams, Package component and Deployment Diagrams, Design pattern, GRASP, Designing objects with responsibilities, Creator, Information expert, Low Coupling, Application of design patterns, System sequence diagrams, Relationship between sequence diagrams and use cases Logical architecture and UML package diagram, Logical architecture refinement, UML class diagrams, UML interaction diagrams, Applying GoF design patterns, Coding and testing, Mapping design to code, Testing, Issues in Object Oriented Testing, Class Testing, Object Oriented Integration Testing, GUI Testing, Object Oriented System Testing, class modelling, Object and class concepts, link and association, Generalization and Inheritance, Advanced class modeling- aggregation, Abstract class metadata, constraints, Event, state, Transition and conditions, state diagram, state diagram behavior, concurrency, Relation of Class and State models, Interaction Modeling, Use case Models, sequence models, activity models, Analysis and Design, Development Life cycle, Development stages, Domain Analysis-Domain class model, domain state model, domain interaction model, Iterating and analysis, Application Interaction model, Application class model, Application state Model, Adding operation, System Design, Estimating Performance, Making a reuse plan, breaking system into subsystems, identifying concurrency, allocation of subsystems, management of data storage, Handling Global resources, choosing a software control strategy, Handling boundary condition, common Architectural style, Class design, Overview of class design, designing algorithms recursing downward, refactoring, design optimization, Adjustment of Inheritance, Reification of Behavior Tg-10: UML design diagrams, design patterns, applying design patterns, coding and testing, Object Oriented Systems Analysis and Design Using UML, Reusable Object-Oriented Software, Standard Object Modeling Language, Class modelling, State modelling. For details visit the website http://InterviewMax.com
Views: 45 InterviewMax
Introduction to Design Patterns
 
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Views: 171 Creative Ninja
OOP design patterns
 
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Described 8 design patterns out of 23 Gang of Four Object oriented design patterns
Views: 191 Jagath Bandara
Point Pattern Analysis Part 2: Quadrat Count Methods
 
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This presentation provides an introduction to quadrat count methods and explains their use in identifying spatial patterns using hypothesis testing. This video presentation was created as part of a peer-reviewed educational series of Reusable Learning Objects (RLOs) on Spatial Analysis. The full suite of presentations can be accessed at http://ecolearnit.ifas.ufl.edu/. For more information on the state-wide and online Geomatics program at the University of Florida, please visit us at http://flrec.ifas.ufl.edu/geomatics/ (Fort Lauderdale campus) or http://sfrc.ifas.ufl.edu/geomatics/ (Gainesville campus).
Point Pattern Analysis Part 6: Detection of Point Clusters
 
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This presentation introduces Nearest Neighbor Hierarchical Clustering and Scan statistics, which are two common techniques for the detection of geographic point clusters. This video presentation was created as part of a peer-reviewed educational series of Reusable Learning Objects (RLOs) on Spatial Analysis. The full suite of presentations can be accessed at http://ecolearnit.ifas.ufl.edu/. For more information on the state-wide and online Geomatics program at the University of Florida, please visit us at http://flrec.ifas.ufl.edu/geomatics/ (Fort Lauderdale campus) or http://sfrc.ifas.ufl.edu/geomatics/ (Gainesville campus).
Design Pattern -  Part 1   Tamil Tutorial
 
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Design Pattern - Part 1 Tamil Tutorial
Views: 7232 Guvi sharing
Design Patterns
 
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Design Patterns: Elements of Reusable Object-Oriented Software is a software engineering book describing recurring solutions to common problems in software design. The book's authors are Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides with a foreword by Grady Booch. The book is divided into two parts, with the first two chapters exploring the capabilities and pitfalls of object-oriented programming, and the remaining chapters describing 23 classic software design patterns. The book includes examples in C++ and Smalltalk. The original publication date of the book was October 21, 1994 with a 1995 copyright, and as of March 2012, the book was in its 40th printing. The book was first made available to the public at OOPSLA meeting held in Portland, Oregon, in October 1994. It has been highly influential to the field of software engineering and is regarded as an important source for object-oriented design theory and practice. More than 500,000 copies have been sold in English and in 13 other languages. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 1283 Audiopedia
Design Patterns Tutorial for Beginners - Part 1 | Design Patterns Video Tutorial - Part 1 | Edureka
 
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This Design Patterns Tutorial for beginners covers the basics of design patterns, UML diagrams, coding with Abstractfactory Pattern, Pattern & Mediator Pattern etc. View upcoming live Design Pattern class schedule: http://goo.gl/GgjULE Design patterns are solutions to software design problems you find again and again in real-world application development. Patterns are about reusable designs and interactions of objects. An online course designed to give you an understanding on Design Patterns, to enhance your skills, aiming to be an efficient Software Architect and develop some highly scalable and maintainable applications. Video gives a brief insight of following topics: 1.Design Patterns : Tailor-made solution for Software Development 2.Understand need of Design Patterns 3.Design UML Diagrams 4.Code with Abstractfactory Pattern 5.Use observer Pattern & Mediator Pattern 6.Importance of design patterns Related Blog : http://www.edureka.co/blog/design-pattern-exposed-factory-pattern?utm_source=youtube&utm_medium=webinar&utm_campaign=design-patterns-tut-1 Edureka is a New Age e-learning platform that provides Instructor-Led Live, Online classes for learners who would prefer a hassle free and self paced learning environment, accessible from any part of the world. The topics related to Design Patterns have extensively been covered in our course ' Design Patterns’. For more information, please write back to us at [email protected] Call us at US: 1800 275 9730 (toll free) or India: +91-8880862004
Views: 69101 edureka!
Structural Design Patterns Introduction
 
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In this video we will discuss 1. Introduction to Structural Design Patterns 2. Types of Structural Design Patterns Introduction to Structural Design Patterns : In the previous sessions we have discussed and understood the creational design patterns in detail. We have also learnt which design pattern needs to be applied based on the project requirements. Definition : "Structural Design Patterns are Design Patterns that ease the design by identifying a simple way to realize relationships between entities" • Structural patterns define how each component or entity should be structured so as to have very flexible interconnecting modules which can work together in a larger system. • A structural design pattern also describes how data moves through the pattern. • Structural patterns describe how classes and objects can be combined to form larger structures • These patterns describe how objects can be composed into larger structures using object composition, or the inclusion of objects within other objects Gang of four has defined 7 Structural Design Patterns • Adapter • Bridge • Composite • Decorator • Facade • Flyweight • Proxy Adapter : Match interfaces of different classes • An adapter allows two incompatible interfaces to work together. • The Adapter design pattern allows incompatible classes to interact with each other by converting the interface of one class into an interface expected by the clients. • Leveraging on Adapter pattern Improves reusability of older functionality. Bridge : Separates an object’s interface from its implementation • To Simplify this definition, The bridge pattern uses encapsulation, aggregation, and can use inheritance to separate responsibilities into different classes. • It Decouples an abstraction from its implementation so that decoupling and abstraction can vary independently". • The bridge pattern can also be thought of as two layers of abstraction. • The Bridge pattern is use full when we want to avoid a permanent binding between an abstraction and its implementation. • Bridge Patterns enables us to separate the interface from the implementation and Improves extensibility. • Also, it hides implementation details from clients. Composite : A tree structure of simple and composite objects • In object-oriented programming, a composite is an object designed as a composition of one-or-more similar objects, all exhibiting similar functionality. • The Composite pattern enables us to create hierarchical tree structures of varying complexity, while allowing every element in the structure to operate with a uniform interface. • The composite pattern describes that a group of objects are to be treated in the same way as a single instance of an object. • The intent of a composite is to "compose" objects into tree structures to represent part-whole hierarchies. Implementing the composite pattern lets clients treat individual objects and compositions uniformly. Decorator : Add responsibilities to objects dynamically • To simplify this, The Decorator pattern enables us to add or remove object functionality without changing the external appearance or function of the object. • The Decorator pattern attaches additional responsibilities to an object dynamically to provide a flexible alternative to changing object functionality without using static inheritance. Facade : A single class that represents an entire subsystem • The Facade pattern provides a unified interface to a group of interfaces in a subsystem. • The Facade pattern defines a higher-level interface that makes the subsystem easier to use with only one single interface. • This unified interface enables an object to access the subsystem using the interface to communicate with the subsystem. • Reduces coupling between subsystems provided if every subsystem uses its own facade pattern and other parts of the system use the facade pattern to communicate with the subsystem. • Façade pattern Shields clients from subsystem components. Flyweight : A fine-grained instance used for efficient sharing • The Flyweight pattern reduces the number of low-level, detailed objects within a system by sharing objects. • The Flyweight pattern defines a structure for sharing objects and focuses its capabilities for space efficiency. Text version of the video http://csharp-video-tutorials.blogspot.com/2017/11/structural-design-patterns-introduction.html Slides http://csharp-video-tutorials.blogspot.com/2017/11/structural-design-patterns-introduction_21.html Design Patterns Tutorial playlist https://www.youtube.com/watch?v=rI4kdGLaUiQ&list=PL6n9fhu94yhUbctIoxoVTrklN3LMwTCmd Design Patterns Text articles and slides http://csharp-video-tutorials.blogspot.com/2017/06/design-patterns-tutorial-for-beginners.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 11609 kudvenkat
CS 401   Modern Programming Practices
 
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This course presents the fundamental principles of object-oriented programming. Students will learn how to write reusable and better-maintained software, and integrate this knowledge with laboratory assignments and projects. Topics include: fundamental principles and models of object-oriented programming, UML class diagrams and design principles that promote reusability and maintainability of software. (2 units) Prerequisite: CS 390 or consent of the department. Video By Professor Premchand Nair
Views: 1200 mumcompro
Siemens PLM NX - External Spur Gear Modeling
 
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UPDATE: At ~ 2:40 leave the Limit options at default (At Point). See the errata video for the reason: https://youtu.be/PUpdlyQcaOs This tutorial presents the modeling of an external spur gear. The involute curve is modeled by law defined curve. Parameters for the expression file: https://grabcad.com/tutorials/how-to-create-spur-gear-in-siemens-nx
Views: 9328 CAD Tutorials
Design Patterns for Game Developers
 
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JOIN US ON OUR NEXT EVENT! FOLLOW US ON FACEBOOK! https://www.facebook.com/LublinGameDev/ Patryk's presentation for Unity Meetup in Las Vegas https://www.meetup.com/Las-Vegas-Unity3D-Meetup/events/nqxdcqyxnbpb/ Link with project and presentation: https://drive.google.com/open?id=18aPEZJIicVOQ5FMg0juor9B4DarfB978 More about design patterns: 1. http://gameprogrammingpatterns.com/contents.html 2. https://www.habrador.com/tutorials/programming-patterns/
Views: 223 Lublin GameDev
FME UC 2014 - Analyse Sequence in Utility Networks and GPS Tracks
 
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Traditionally, geographic data depict static situations of one object next to another one. Thus, GIS tools including FME are good at analysing static juxtaposition of objects. When it comes to dynamically linking objects over space and time, their application might not be obvious. If dynamic simulation tools are not available, some tricks may help doing the job with FME. One such dynamic analysis pattern is presented and illustrated with two real-world applications. In the first example, 50 police vehicles send their (unfortunately rather imprecise) position records in real-time. Incoming records have to be linked to previous records to determine on which road a vehicle is driving at what speed. This information is used, amongst others, to predict how long it will take to arrive at the target site and to help avoid congestion on the way. The second example is from Berne utility. In a data migration effort, gaps in a geometrical network had to be filled, particularly at manhole positions. This was considerably easy compared to the subsequent task to establish, for each of the hundreds of thousands wires, the sequence of ducts the wire passes through. The essence of six square meters of FME workbenches will be presented in order to elaborate a reusable sequence pattern. See more videos from the FME User Conference 2014 at: www.safe.com/fmeuc
Views: 75 FME Channel
Introducing Aura: Rapid Mobile Development with Reusable Components
 
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Join us to learn about Aura's Rapid mobile development with reusable components.
Views: 9651 Dreamforce Video
Advanced Querying Techniques: Normalizr.js & Ramda.js
 
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Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com In this video, Christopher Rizzo delivers a presentation on the benefits of incorporating libraries like Normalizr and Ramda in to your production workflow. He provides a brief introduction to the concept of Normalizing data. He discusses how to analyze how your data is structured, how to write schema for Normalizr, and contrasts the ways Normalized and Raw data can be manipulated and accessed. In the second section, he dives in to the topic of Currying and using a library like Ramda to develop curried functions with additional features. Christopher then shows how to analyze the formulaic components of a function, so that you can help recognize patterns and develop generic functions that can be curried to add specialization. He concludes by putting the two libraries together to develop a curried Model Query generator function, capable of taking in models, Sequelize Queries, their options objects, and Normalizr Schemas to quickly create many different queries that are specialized and reusable throughout your app!
Views: 4497 Fullstack Academy
DjangoCon US 2018 - Elasticsearch: Accelerating the Django Admin by Kate Kligman
 
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DjangoCon US 2018 - Elasticsearch: Accelerating the Django Admin by Kate Kligman The Django Admin offers quick solutions and rapid feature development for new websites. But as your website expands, and datasets grow, it can become unwieldy and slow. Enter Elasticsearch: an easy way to quickly accelerate your Django administration tools and searches. At Grove Collaborative, we’ve experimented with Elasticsearch technology and developed reusable patterns that brought new life to our aging Django administration system. This presentation will teach you how to leverage easy Elasticsearch wins while avoiding common pitfalls.
Views: 456 DjangoCon US
What Is The Singleton Pattern?
 
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Googleusercontent search. Singleton pattern wikipediadesign patterns singleton tutorialspoint. Singleton design pattern in c# and vb dofactory implementation geeksforgeeks. What is the singleton pattern? Lynda. Singleton design pattern in java howtodoinjava. Singleton pattern positive and negative aspects codeproject. Singleton design pattern sourcemaking design_patterns singleton url? Q webcache. How to create singleton class in java, thread safety, enum, bill pugh and software engineering, the pattern is a design that restricts instantiation of one object. Make the class of single instance object responsible for creation, initialization, access, and enforcement. The singleton what real (i. Practical) difference exists between a static class and what makes you say that either singleton or method isn't if system only needs one instance of class, to be accessible in many different parts system, control both instantiation 22 oct 2012 pattern is design solution where an application wants have any all possible scenarios. The singleton pattern ensures that has only one instance and provides global design patterns learning java in simple easy steps beginner's tutorial containing complete knowledge about an 14 aug 2016 is most controversial. Design patterns in java singleton tutorial vogella. Free source code and uml the singleton pattern is one of simplest design patterns. This is useful when exactly one object needed to coordinate actions across the system singleton pattern of best known patterns in software engineering. The singleton pattern is probably the most famous and at same time controversial known to us. It must be also a singleton is class which only allows one instance of itself to created and gives simple, easy access said. Object oriented design patterns. For example you may use a singleton to access your data model design pattern c# and vb. Ruby singleton pattern dalibor nasevic. Ensure has only one instance, and provide global point of access to it. Essentially, a singleton is class which only allows single instance of itself to be created, and usually gives simple access that pattern says just'define has one mostly used in multi threaded database applications design ensure created; Provide global point the object learn using easy java examples mainak goswami's outstanding tutorial singletons are useful provide unique source data or functionality other objects. Sometimes we need to have only one instance of our class for example a single db connection 12 sep 2012. Singleton pattern wikipedia. Singleton design pattern tutorial youtube. Singleton design pattern tutorial an introspection w best dzone. Difference between static class and singleton pattern? Stack pattern c2 wiki. Java singleton design pattern example best practices journaldevc# in depth implementing the patternsingleton. What is a singleton in c#? Stack overflow. Rather than reinventing the 28 dec 2011 introduction. 24 jan 2010 implementing singleton pattern with ruby in few ways 13 dec 2013 design patterns are reusable solutions that solve the challenges software developers face over and over again.
Views: 53 crazy sparky
An Unshakeable Kingdom
 
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Views: 1 Carila A.
Request: Siemens PLM NX - Cluster Gear Modeling
 
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This video demonstrates the modeling of a cluster gear in Siemens PM NX10. The model can be downloaded from here: https://grabcad.com/library/cluster-gear-1
Views: 528 CAD Tutorials
17-Spring MVC - Project Work - Service Implementation Class  Biz Logic (Contact App)- By eZeon
 
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This Project Work(Contact App) video is based on Business Logic(Service Implementation) and testing it independently(out of MVC and Without Web Server). WHAT IS BUSINESS LOGIC OR DOMAIN LOGIC OR SERVICE? Business Logic is a most important part of the project(backbone) where customer requirement is development along with workflow. According to wikipedia(https://en.wikipedia.org/wiki/Business_logic) : In computer software, business logic or domain logic is the part of the program that encodes the real-world business rules that determine how data can be created, stored, and changed. WHAT IS BUSINESS LAYER OR SERVICE LAYER? Service layer contains business logic of the project. There can be multiple service class and interfaces involved to meet the business requirement. It should be independent, portable and loosely coupled with another layer of the project/application. HOW SERVICE CLASS IS DIFFERENT FROM DAO CLASS? Service Class contains business logic where different operations can be executed together in a proper order to meet business-requirement. The logic in service class can communicate with other systems like Email Server, FTP Server, SMS API. The logic in service layer can join multiple tables to fetch records or prepare the reports. DAO Class contains operations/methods to handle CRUD operations for SINGLE ENTITY/TABLE. In practices DAO does not contains table-join operation. But DAO can be reused in Service Layer. HOW TO DEVELOP BUSINESS LOGIC or SERVICES? 1.Create SERVICE INTERFACE which contains different business methods prototypes with proper documentation. 2.Provide Service Implementation class. This class contains the definition of business methods. The Service Class can reuse DAO classes.It also contains Database Operation, Transaction Handing, Business Flow, Email/SMTP Operations, SMS Operations or anything which is required to client(client-requirement). 3. Finally test the Service independently(out of MVC layer). JUnit can also be used. COVERAGE IN THIS VIDEO: 1. Service Implementation Class(Service Bean) - UserServiceImpl 2. Testing of UserService and implementation CODE REFERENCE: //UserService.java package in.ezeon.capp.service; import in.ezeon.capp.dao.BaseDAO; import in.ezeon.capp.dao.UserDAO; import in.ezeon.capp.domain.User; import in.ezeon.capp.exception.UserBlockedException; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * Its an implementation of UserService. * @author Vikram */ @Service public class UserServiceImpl extends BaseDAO implements UserService{ @Autowired private UserDAO userDAO; @Override public void register(User u) { userDAO.save(u); } @Override public User login(String loginName, String password) throws UserBlockedException { throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. } @Override public List getUserList() { throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. } @Override public void changeLoginStatus(Integer userId, Integer loginStatus) { throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. } } Don't skip or miss any video, just follow step by step video series. Also check the source code listing in our blog http://ezeon.in/blog Don't forget to subscribe my channel.
Views: 2781 Vikram Thakur
Drupalcamp London 2016 - Object Oriented UX with Drupal
 
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This presentation is about connections between what we do as UX practitioners and what we do as developers, specifically in Drupal and how the two can more easily marry up. Also, I have a practical exercise to share that I hope will make that process work better. Object Oriented UX Discovery - Object Mapping with Drupal from Crispin Read Lots of people - (CLIENTS MOSTLY) tend to think of UX as interaction design and UI design, delicious animated transitions, amazing persistent navigation, beautiful layouts etc. These things are important but they can come later. UX is: Enhancing customer satisfaction and loyalty by improving the usability, ease of use and pleasure provided in the interaction between them and the product. The huge selling point of it all is in behavioural economics. UX is more about planning measuring testing and learning thank it is about interface and interaction design So what’s the problem? It’s hard to put it all together, it’s hard to work together on things we know very little about. I got the idea for this session from a post I read on ALA last year by Sophia Voychehovski about designing the interface for CNNs election night app in for the 2012 US presidential elections. What she did was start designing a system of parts, essentially a system of objects. Atomic design, she’s producing wireframes and templates of reusable parts - and these parts are showing us how different objects are RELATED and how they could interact, how they influence the others. Sitemaps are for robots and come last - they are for content and SEO, they are for bots, what we are concerned with is connected elements and PRIORITISATION. So this is OOUX - PUTTING OBJECT DESIGN OVER PROCEDURAL ACTION DESIGN BONUS - That’s how we want to work as developers, that’s how Drupal wants to work: Also a great foundation for cross team communication across disciplines. Contextual Navigation Sara Wachter-Boettcher - Mike Atherton - Rachel Lovinger all singing the praises and benefits of modeling content before wireframes or interaction. This is something that Drupal does really well. OBJECT MAPPING - To be done early on in discovery with designers, devs and client reps in the same room discussing project from different perspective/disciplin. From a brief we can abstract the OBJECTS (entities) basically by highlighting the nouns and talking about them paying special attention to the ones that keep popping up. We can add the content (fields) to those objects as core content (in yellow stickies) and meta (blue stickies) Then we nest objects for cross linking asking questions all the way. Followed by forced , single column prioritisation of objects. What we have is not a design, not a wireframe but we have a comprehensive list and map of what objects are, what the contain and how they relate to each other. from there we can wireframe with out the tech team having to then reverse engineer them back into objects, we can design without accidentally adding some new accidental object or functionality to the project and we can begin prototyping the interactions between objects before the designs even exist. It’s not a new end to end process but it is a very useful exercise to add understanding and foster collaboration throughout multi disciplined teams.
Views: 121 Drupalcamp London
Learn Python | VS Code | Python Hello World Tutorial
 
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Camtasia Screen Recording Software https://techsmith.pxf.io/XLkDM Free Trial Web Hosting http://www.SmarterASP.NET/index?r=codingisforyou Books Clean Code https://amzn.to/2GZ9qKK C# In a Nutshell https://amzn.to/2Vmph9z AWS Certified Solutions Architect https://amzn.to/2BWJYQj HTTP https://amzn.to/2CHNmAd How Linux Works https://amzn.to/2CHSLrd Design Patterns Elements of Reusable Object-Oriented Software https://amzn.to/2LGB6CZ Cracking the Coding Interview https://amzn.to/2SuCY4t Philosophy Simulacra & Simulation https://amzn.to/2RsBIBE Exponential Organizations https://amzn.to/2BTaxpP This is learning tutorial on using VS Code to start doing Python. The Hello World app in this Visual Studio Code Tutorial Videos for Beginners that want to learn python. I show how VS Code is an open platform development platform that combines the simplicity of a source code editor with powerful developer tooling, like IntelliSense code completion and debugging. Visual Studio Code is a lightweight but powerful source code learning tool for Python and other languages and an editor which runs on your desktop and is available for Windows, Mac and Linux. It comes with built-in support for JavaScript, TypeScript and Node.js, Python and has a rich ecosystem of extensions for other languages (such as C++, Python, Python, PHP, Go) and runtimes. Begin your journey with VS Code with these introductory videos. It is an editor that gets out of your way. The edit-build-debug cycle means less time fiddling with your environment, and more time executing on your ideas. Edit, build, and debug with ease At its heart, Visual Studio Code features a lightning fast source code editor, perfect for day-to-day use and Python. With support for hundreds of languages, Visual Studio Code helps you be instantly productive with syntax highlighting, bracket-matching, auto-indentation, box-selection, snippets, and more. Intuitive keyboard shortcuts, easy customization and community-contributed keyboard shortcut mappings let you navigate your code with ease. For serious coding, you'll often benefit from tools with more code understanding than just blocks of text. Visual Studio Code includes built-in support for IntelliSense code completion, Python, rich semantic code understanding and navigation, and code refactoring. And when the coding gets tough, the tough get debugging. Debugging is often the one feature that developers miss most in a leaner coding experience, so we made it happen. Visual Studio Code includes an interactive debugger, so you can step through source code, inspect variables, view call stacks, and execute commands in the console. Visual Studio Code also integrates with build and scripting tools to perform common tasks making everyday workflows faster. Visual Studio Code has support for Git so you can work with source control without leaving the editor including viewing pending changes diffs. Make it your own Customize every feature to your desire, install any number of third-party extensions. While most scenarios work out of box with no configuration, Visual Studio Code also grows with you, and we encourage you to optimize your experience to suit your unique needs. Visual Studio Code is an open source project so you can also contribute to the growing and vibrant community on GitHub. Cross-platform Leverage the unified .NET Standard library to target all platforms with the same code and use the same languages and tools to reuse your skills. Fast High performance server runtime for Windows Server and Linux make .NET 8x faster than Node.js and 3x faster than Go. That means applications provide better response times and require less compute power. More info Lightweight No impact deployment and a modular development model where you only take dependencies on the minimal set of packages you need. Modern Multiple language support with Python, VB, F# and modern constructs like generics, Language Integrated Query (LINQ), async support and more. Open Source Runtime, libraries, compiler, languages and tools are all open source on GitHub where contributions are accepted, tested and fully supported.
Views: 47050 codingisforyou
Crash Course in Object Oriented JavaScript (Explanation in Hindi)
 
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*****Crash Course in Object Oriented JavaScript (In Hindi): https://ict.iitk.ac.in/product/crash-course-in-object-oriented-javascript-in-hindi/***** This E & ICT Academy, IIT Kanpur "Crash Course in Object Oriented JavaScript" video will learn about objects, properties, constructors, prototypes, and private properties. After that, you will learn about multiple different ways to create getters and setters, how to use and define properties. Then you will learn about inheritance, and how to call parent methods. Below is the list of topics covered in this session: 1. JavaScript Objects 2. Objects in Objects 3. Constructor Functions 4. instance of 5. Passing Objects to Functions 6. Prototypes 7. Adding Properties to Objects 8. List Properties in Objects 9. hasOwnProperty etc. Subscribe to our channel to get video updates. Hit the subscribe button above. Facebook: https://www.facebook.com/ICTAcademyIITK/ Twitter: https://twitter.com/ICTAcademyIITK LinkedIn: https://www.linkedin.com/company/ict-academy-iit-kanpur/ Webite: https://ict.iitk.ac.in/ ----------------------------------------------------------------- How it Works? 1. 24X7 Access: You can view lecture as per your own convenience. 2. Online lectures: ~90 minutes of online lecture with high-quality video. 3. Updated Quality content: Content is latest and gets updated regularly to meet the current industry demands. About the Course: This course covers everything that you would ever want to know about Object Oriented Javascript. In this course, you will learn about objects, properties, constructors, prototypes, and private properties. After that, you will learn about multiple different ways to create getters and setters, how to use and define properties. Then you will learn about inheritance, and how to call parent methods. You will also learn some design patterns and Object Oriented Programming in ECMAScript 6, which is most commonly known as the future of how to do object-oriented programming in JavaScript. During this Crash Course in Object Oriented JavaScript Online training, you'll learn: 1. Explore a variety of ways to write object-oriented code in JavaScript. 2. Build a variety of JavaScript objects. 3. Write memory efficient code and seek simplicity and modularity in your own code. 4. Write robust and performant web applications. 5. Boost your hireability through innovative and independent learning. 6. Get a certificate on successful completion of the course. Course Objectives: On completion of the Crash Course in Object Oriented JavaScript Certification training, a learner will be able to: 1. Students: All students who are pursuing any technical/professional courses, and looking forward to a career in Finite Element Analysis, can take this course. 2. Teachers/Faculties: All teachers/faculties who want to improve and enhance their area of expertise and want to upgrade their skills, and are interested in delivering their knowledge and learning to their students, can take this course. The certificate will be another feather in their hat. 3. Professionals: All working professionals, who wish to learn the fundamentals of FEA in a semi-formal but structured setting, and plan to use this knowledge in their workplace, can take this course. Why learn Object Oriented Javascript? JavaScript is a widely popular programming language, and it is so widely spread because of its simplicity and beginner-friendly nature. It is used by 92.2% web associates in the world, taking from a small scale static website to a large scale nation affecting the economy. Any task related to web development is incomplete without JavaScript. Object Oriented Javascript allows you to explore a variety of ways to write object-oriented code in Javascript, which reduces your development time by leveraging JavaScript's prototypal inheritance model, leading to modular and reusable code. This feature makes Javascript much more enhanced as compared to any other language. It has been noticed that the companies prefer front-end developers with knowledge of Object Oriented Javascript. So, career prospects are also good. Please write back to us at [email protected] or chat with us online-https://ict.iitk.ac.in/ for more information.
Lecture - 15 Design Patterns
 
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Lecture Series on Software Engineering by Prof.N.L. Sarda, Prof. Umesh Bellur,Prof.R.K.Joshi and Prof.Shashi Kelkar, Department of Computer Science & Engineering ,IIT Bombay . For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 190912 nptelhrd
DVCon 2010 Day3 interview with Matan Vax.mp4
 
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Interview of Cadence R&D Architect and language guru Matan Vax on his DVCon 2010 paper "Where OOP Falls Short of Hardware Verification Needs". Note: below is the list of references that Matan refers to at the tail end of the video: 1. Bergeron, J., Cerny, E., Hunter, A., and Nightingale, A. 2005 Verification Methodology Manual for SystemVerilog. Springer-Verlag New York, Inc. 2. Bosch, J. 1998. Design Patterns as Language Constructs. In Journal of Object-Oriented Programming, vol 11, 18-32. 3. Gamma, E., Helm, R., Johnson, R., and Vlissides, J. 1995 Design Patterns: Elements of Reusable Object-Oriented Software. Addison-Wesley Longman Publishing Co., Inc. 4. Gil, J. and Lorenz, D. H., 1998, Design patterns vs. language design. In Proceedings of the 11 th European Conference on Object-Oriented Programming, Lecture Notes in Computer Science, vol. 1241, 9-13. 5. Hollander, Y., Morley, M., and Noy, A. 2001. The e language: A fresh separation of concerns. In Proceedings of the International Conference on Technology of Object-Oriented Languages and Systems (TOOLS 2001 Europe Conference, Zurich, Switzerland). 6. IEEE Standard for the Functional Verification Language 'e', IEEE Computer Society, IEEE, New York, NY, IEEE Std 1647—2006 7. IEEE Standard For System Verilog - Unified Hardware Design, Specification and Verification Language, IEEE Computer Society, IEEE, New York, NY, IEEE Std 1800—2005 8. Kay, A. C. 1993. The early history of Smalltalk. In the Second ACM SIGPLAN Conference on History of Programming Languages (Cambridge, Massachusetts, United States, April 20 - 23, 1993). HOPL-II. ACM, New York, NY, 69-95. 9. Kiczales, G., Hilsdale, E., Hugunin, J., Kersten, M., Palm, J., and Griswold, W. G. 2001. An Overview of AspectJ. In Proceedings of the 15th European Conference on Object-Oriented Programming (June 18 - 22, 2001). J. L. Knudsen, Ed. Lecture Notes In Computer Science, vol. 2072. Springer-Verlag, London, 327-353. 10. OVM web site. http://ovmworld.org 11. Piziali, A. 2007 Functional Verification Coverage Measurement and Analysis. 1st. Springer Publishing Company, Incorporated. 12. Robinson, D. 2007, Aspect-Oriented Programming with the e Verification Language: A Pragmatic Guide for Testbench Developers. Elsevier Inc. 13. SystemC web site. http://www.systemc.org 14. Vax, M. 2007. Conservative aspect-orientated programming with the e language. In Proceedings of the 6th international Conference on Aspect-Oriented Software Development (Vancouver, British Columbia, Canada, March 12 - 16, 2007). AOSD '07, vol. 208. 15. VMM web site. http://vmm-sv.org 16. Wile, B., Goss, J., and Roesner, W. 2005 Comprehensive Functional Verification: the Complete Industry Cycle (Systems on Silicon). Morgan Kaufmann Publishers Inc.
Views: 1077 Joe Hupcey III
Вебинар: UML Essentials (ENG)
 
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Roadmap: • Background of the Unified Modelling Language (UML) • General UML Diagram Concepts • Object and class diagrams • Interaction diagrams: Sequence Diagrams • Use Cases
Software Development part 2
 
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Enterprise systems, are software applications, that automate and integrate, many of the key business processes, of an organization. With some understanding of software development, you will learn about, current development practices, for this type of system, and develop relevant skills to apply them, to real-world problems. You will develop core skills, in object Oriented analysis, and design, allowing you to develop software, that is fit for purpose, reusable, and, amenable to change.
Views: 118 vcilt14
IOTA tutorial 5: Snapshot and Attach to tangle
 
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If you like this video and want to support me, go this page for my donation crypto addresses: https://www.youtube.com/c/mobilefish/about This is part 5 of the IOTA tutorial. In this video series different topics will be explained which will help you to understand IOTA. It is recommended to watch each video sequentially as I may refer to certain IOTA topics explained earlier. A snapshot is a method to reduce the size of the Tangle database by removing all transactions from the Tangle, leaving only a record of addresses with corresponding balances. Addresses with zero balance are also removed from this record. A snapshot is simply a list of every address with corresponding non zero balance. This list can be found in the IOTA Reference Implementation (IRI). https://github.com/iotaledger/iri/blob/dev/src/main/resources/Snapshot.txt These addresses with balances acts like a genesis address. Once the snapshot is successfully performed it is possible you may need to claim your tokens. Claiming means, that you need to transfer your tokens from the old Tangle database (before the snapshot) into the new Tangle database (after the snapshot). If you forget to claim your tokens you will never be able to get access to your tokens again. The claiming process is only needed when there are major design changes in the IOTA protocol and please note that IOTA is still in the development phase. So claiming your tokens after a snapshot may still occur. The IOTA Foundation announces when snapshots are made. It is your duty to be kept informed. See the following links for IOTA announcements: https://forum.helloiota.com/Technology/General-Discussion/Announcements/IOTA-Announcements https://iotatangle.slack.com/messages/C1MB9CZ41 An IOTA wallet is a deterministic wallet, meaning when a new address is generated it is calculated from the combination of the seed and address index, where the address index can be any positive integer. The wallet starts from address index 0, and asks the node it is connected to, for a list of transactions that incorporate that address. If there are no transactions found referencing that address the wallet concludes that it has not used the address yet. The wallet will not increase the address index and shows the total balance of all the addresses found. If there are transactions found referencing that address, the wallet will increase the address index which in turn creates a new address. The wallet again searches the Tangle for transactions referencing that new address. The wallet will skip any address index where it sees that the corresponding address has already been attached to the Tangle. When you attach an address to the Tangle it creates: - a zero-value transaction referencing that address, - choosing and validating two transactions from the Tangle, - and then does the Proof-of-Work. In the wallet an attached address is shown in the history tab, as a transfer of 0 funds. It is not necessary to attach an address, IOTAs can be successfully sent to a non-attached address. HOWEVER IT IS RECOMMENDED THAT YOU ALWAYS ATTACH AN ADDRESS BEFORE USING IT. By attaching an address to the Tangle you inform the wallet that it should not reuse that address. Reusing an address, especially for outgoing transactions, can have huge security implications. In IOTA, the security of a transaction decreases when you send tokens more than once from the same address. This is because IOTA uses the Winternitz one-time signatures which degrade security exponentially after each address reuse for outgoing transactions. Once you have sent a transaction with a specific address as input, you should never use it again because a part of the private key of that specific address is revealed. The more outgoing transactions you make from the same address, the easier it will be for attackers to steal that address's balance by brute force the private key. Attackers uses a Tangle explorer to see if addresses are reused and try to steal funds from these reused addresses. You can reuse an address for receiving as long as you have not used it for any outgoing transaction. An additional security issue is after a snapshot, when the wallet forgets all of its history, people reuses addresses again. To avoid this, create a new wallet and transfer all your funds from the old wallet to the first address on this new wallet before the snapshot. This step ensures that all addresses in this new wallet (except the first) have never been used before. My Simple IOTA Wallet: https://www.mobilefish.com/services/cryptocurrency/iota_wallet.html Check out all my other IOTA tutorial videos: https://goo.gl/aNHf1y Subscribe to my YouTube channel: https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: https://www.mobilefish.com/developer/iota/iota_quickguide_tutorial.html #mobilefish #howto #iota
Views: 9052 Mobilefish.com
Spatial Flux: Body and Architecture in Space
 
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Structurally, zero gravity means that we do not have to contend with architecture's greatest arch-nemesis, gravity. This opens up a new world of possibilities where we can deploy structures that no longer have to counteract/resist gravitational force. We would like to explore new forms of rapid inflatable prototyping. Most importantly this prototype explores surfaces utilizing materials that would normally fail under gravity, yet flourish in zero gravity. More information at: https://www.media.mit.edu/projects/spatial-flux/overview/
Views: 908 MIT Media Lab

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