Design patterns provide common templates for solving similar problems. They also provide a higher-level language for software developers to use to describe approaches they might choose when designing part of an application. This session introduces and applies several patterns useful to web application developers. Examples will primarily use C#/.NET.
Fluttercon Berlin 23 - Dart & Flutter on RISC-VChris Swan
Arm has dominated the mobile space since the dawn of smartphones, but systems based on the open source RISC-V instruction set architecture will bring new choices for manufacturers and us, their customers. RISC-V SDKs showed up in the Dart dev channel in Apr 22, but it's still pretty hard to build stuff due to lots of missing dependencies. As always happens with new stuff, the hardware people are waiting for broader software support, and the software people are waiting for a larger hardware installed base. This talk examines the forces that are driving RISC-V forward, and what developers can expect from a world that will have RISC-V devices, mobile phones, tablets and cloud services.
Flutter + tensor flow lite = awesome sauceAmit Sharma
Presentation for DCFlutter Meetup Monday, September 30, 2019
In this presentation, you will learn how to create and use a TensorFlow Lite model for object detection in Flutter. We will discuss transfer learning, TensorFlow model training, TensorFlow model conversion to TensorFlow Lite, and Flutter app architecture to use an ML model to solve real-world problems.
Additionally, you will learn machine learning and TensorFlow basics with live examples and code walkthroughs. Please join us for a deep dive session on machine learning in Flutter using TensorFlow Lite.
Qt Quick/QML brings designers and developers together to create and collaborate. QML is a collection of technologies that can build modern and fluid interfaces for applications – quickly. Join us for this webinar to explore the best of QML for mobile, embedded and desktop.
Part IV will cover:
- Dynamic Item Creation
- Keyboard Input Handling
All 3 Clean Code presentations provide great value by themselves, but taken together are designed to offer a holistic approach to successful software creation. This first session creates the foundation for the 2nd and 3rd Clean Code presentation on Dependency Injection, as it explains expected base knowledge. Why writing Clean Code makes us more efficient Over the lifetime of a product, maintaining the product is actually one - if not the most - expensive area(s) of the overall product costs.
Writing clean code can significantly lower these costs. However, writing clean code also makes you more efficient during the initial development time and results in more stable code. You will be presented design patterns and best practices which will make you write better and more easily maintainable code, seeing code in a holistic way.
You will learn how to apply them by using an existing implementation as the starting point of the presentation. Finally, patterns & practices benefits are explained. This presentation is based on C# and Visual Studio 2012. However, the demonstrated patterns and practice can be applied to every other programming language too.
Note: Moving forwards this presentation will be updated with the latest version of the slides for the last event I did the presentation instead of creating new separate slide decks here on SlideShare.
Presentation dates and locations:
2015-10-03 Silicon Valley Code Camp, San Jose, CA
2015-06-27 SoCal Code Camp - San Diego, CA
2014-11-14 SoCal Code Camp - Los Angeles, CA
2014-10-18 Desert Code Camp - Chandler, AZ
2014-10-11 Silicon Valley Code Camp, Los Altos Hills, CA
Fluttercon Berlin 23 - Dart & Flutter on RISC-VChris Swan
Arm has dominated the mobile space since the dawn of smartphones, but systems based on the open source RISC-V instruction set architecture will bring new choices for manufacturers and us, their customers. RISC-V SDKs showed up in the Dart dev channel in Apr 22, but it's still pretty hard to build stuff due to lots of missing dependencies. As always happens with new stuff, the hardware people are waiting for broader software support, and the software people are waiting for a larger hardware installed base. This talk examines the forces that are driving RISC-V forward, and what developers can expect from a world that will have RISC-V devices, mobile phones, tablets and cloud services.
Flutter + tensor flow lite = awesome sauceAmit Sharma
Presentation for DCFlutter Meetup Monday, September 30, 2019
In this presentation, you will learn how to create and use a TensorFlow Lite model for object detection in Flutter. We will discuss transfer learning, TensorFlow model training, TensorFlow model conversion to TensorFlow Lite, and Flutter app architecture to use an ML model to solve real-world problems.
Additionally, you will learn machine learning and TensorFlow basics with live examples and code walkthroughs. Please join us for a deep dive session on machine learning in Flutter using TensorFlow Lite.
Qt Quick/QML brings designers and developers together to create and collaborate. QML is a collection of technologies that can build modern and fluid interfaces for applications – quickly. Join us for this webinar to explore the best of QML for mobile, embedded and desktop.
Part IV will cover:
- Dynamic Item Creation
- Keyboard Input Handling
All 3 Clean Code presentations provide great value by themselves, but taken together are designed to offer a holistic approach to successful software creation. This first session creates the foundation for the 2nd and 3rd Clean Code presentation on Dependency Injection, as it explains expected base knowledge. Why writing Clean Code makes us more efficient Over the lifetime of a product, maintaining the product is actually one - if not the most - expensive area(s) of the overall product costs.
Writing clean code can significantly lower these costs. However, writing clean code also makes you more efficient during the initial development time and results in more stable code. You will be presented design patterns and best practices which will make you write better and more easily maintainable code, seeing code in a holistic way.
You will learn how to apply them by using an existing implementation as the starting point of the presentation. Finally, patterns & practices benefits are explained. This presentation is based on C# and Visual Studio 2012. However, the demonstrated patterns and practice can be applied to every other programming language too.
Note: Moving forwards this presentation will be updated with the latest version of the slides for the last event I did the presentation instead of creating new separate slide decks here on SlideShare.
Presentation dates and locations:
2015-10-03 Silicon Valley Code Camp, San Jose, CA
2015-06-27 SoCal Code Camp - San Diego, CA
2014-11-14 SoCal Code Camp - Los Angeles, CA
2014-10-18 Desert Code Camp - Chandler, AZ
2014-10-11 Silicon Valley Code Camp, Los Altos Hills, CA
In these slides i have explained an important design pattern that is "singleton pattern".
slides includes everything required about it, from definition to implementation and also different ways to achieve it according to situation and requirements.
Clean architecture - Protecting the DomainVictor Rentea
The goal of architecture is to simplify the most complex parts of your logic. Any other goal should be secondary to this. The problem is that you can’t always anticipate where the complexity of your application will accumulate, especially when confronted with ever-changing requirements. The only way to keep your code simple is to gradually evolve the architecture without adding useless complexity up front, but always looking out for opportunities to break-down and refactor towards the most simple design that solves the problem. Drawing concepts from the Domain-Driven Development mindset, this talk summarizes the most important lessons learned designing and consulting many real-world projects. Along the way, you’ll hear about Value Objects and Entities, DTOs, Dependency Inversion Principle, Facades, the Onion Architecture and many pragmatic tips and tricks immediately applicable to your day-to-day work.
Singleton Design Pattern - Creation PatternSeerat Malik
In software engineering, the singleton pattern is a software design pattern that restricts the instantiation of a class to one. This is useful when exactly one object is needed to coordinate actions across the system. The term comes from the mathematical concept of a singleton.
With Code in JAVA
Design patterns are optimized, reusable solutions to the programming problems that we encounter every day. A design pattern is not a class or a library that we can simply plug into our system; it's much more than that. It is a template that has to be implemented in the correct situation. It's not language-specific either. A good design pattern should be implementable in most—if not all—languages, depending on the capabilities of the language. Most importantly, any design pattern can be a double-edged sword— if implemented in the wrong place, it can be disastrous and create many problems for you. However, implemented in the right place, at the right time, it can be your savior.
The model/view design pattern is the standard way of separating UI from business logic, especially when the data exchanged is dynamic. In a series of blog posts released in May, we presented an introduction to model/view design and provided an example of how this pattern is leveraged in Qt applications. In this webinar, we will go more in depth, illustrating model/view with a set of two QML programming examples. The first will consider the simple case where data size remains constant. The second will cover the more common situation where data size is dynamic.
Over the last year there has been a lot of buzz about Clean Architecture in the Android community, but what is Clean Architecture? How does it work? And should I be using it? Recently at Badoo we decided to rewrite our messenger component.
Over the years this core piece of functionality in our app has become large and unwieldy. We wanted to take a fresh approach to try and prevent this from happening again. We choose to use Clean Architecture to achieve our goal. This talk intends to share our journey from theory to implementation in an application with over 100 million downloads. By the end, you should not only understand what Clean Architecture is, but how to implement it, and whether you should.
¿A qué huele tu código? Afinando nuestro olfatoRubén Bernárdez
Repaso por los principales olores de código que podemos encontrar en el desarrollo de software.
Obtenidos a partir del libro "Refactoring: Improving the design of existing code" de Martin Fowler
Design Pattern Mastery - Momentum Dev Con 19 Apr 2018Steven Smith
Design patterns help developers and teams solve problems using proven approaches. In this talk, you'll learn how to solve a series of real world problems by applying patterns. Not only do patterns help individual developers solve particular problems, but they also enable teams to discuss design decisions using a richer, more descriptive language. By the end, you'll have some concrete tools you can apply, and hopefully the desire to master more patterns as you continue to improve!
In these slides i have explained an important design pattern that is "singleton pattern".
slides includes everything required about it, from definition to implementation and also different ways to achieve it according to situation and requirements.
Clean architecture - Protecting the DomainVictor Rentea
The goal of architecture is to simplify the most complex parts of your logic. Any other goal should be secondary to this. The problem is that you can’t always anticipate where the complexity of your application will accumulate, especially when confronted with ever-changing requirements. The only way to keep your code simple is to gradually evolve the architecture without adding useless complexity up front, but always looking out for opportunities to break-down and refactor towards the most simple design that solves the problem. Drawing concepts from the Domain-Driven Development mindset, this talk summarizes the most important lessons learned designing and consulting many real-world projects. Along the way, you’ll hear about Value Objects and Entities, DTOs, Dependency Inversion Principle, Facades, the Onion Architecture and many pragmatic tips and tricks immediately applicable to your day-to-day work.
Singleton Design Pattern - Creation PatternSeerat Malik
In software engineering, the singleton pattern is a software design pattern that restricts the instantiation of a class to one. This is useful when exactly one object is needed to coordinate actions across the system. The term comes from the mathematical concept of a singleton.
With Code in JAVA
Design patterns are optimized, reusable solutions to the programming problems that we encounter every day. A design pattern is not a class or a library that we can simply plug into our system; it's much more than that. It is a template that has to be implemented in the correct situation. It's not language-specific either. A good design pattern should be implementable in most—if not all—languages, depending on the capabilities of the language. Most importantly, any design pattern can be a double-edged sword— if implemented in the wrong place, it can be disastrous and create many problems for you. However, implemented in the right place, at the right time, it can be your savior.
The model/view design pattern is the standard way of separating UI from business logic, especially when the data exchanged is dynamic. In a series of blog posts released in May, we presented an introduction to model/view design and provided an example of how this pattern is leveraged in Qt applications. In this webinar, we will go more in depth, illustrating model/view with a set of two QML programming examples. The first will consider the simple case where data size remains constant. The second will cover the more common situation where data size is dynamic.
Over the last year there has been a lot of buzz about Clean Architecture in the Android community, but what is Clean Architecture? How does it work? And should I be using it? Recently at Badoo we decided to rewrite our messenger component.
Over the years this core piece of functionality in our app has become large and unwieldy. We wanted to take a fresh approach to try and prevent this from happening again. We choose to use Clean Architecture to achieve our goal. This talk intends to share our journey from theory to implementation in an application with over 100 million downloads. By the end, you should not only understand what Clean Architecture is, but how to implement it, and whether you should.
¿A qué huele tu código? Afinando nuestro olfatoRubén Bernárdez
Repaso por los principales olores de código que podemos encontrar en el desarrollo de software.
Obtenidos a partir del libro "Refactoring: Improving the design of existing code" de Martin Fowler
Design Pattern Mastery - Momentum Dev Con 19 Apr 2018Steven Smith
Design patterns help developers and teams solve problems using proven approaches. In this talk, you'll learn how to solve a series of real world problems by applying patterns. Not only do patterns help individual developers solve particular problems, but they also enable teams to discuss design decisions using a richer, more descriptive language. By the end, you'll have some concrete tools you can apply, and hopefully the desire to master more patterns as you continue to improve!
Name : Prasoon Dadhich
USN : 1MS09IS069
CODE
#include <iostream>
using namespace std;
class Singleton
{
private:
static bool instanceFlag;
static Singleton *single;
Singleton()
{
//private constructor
}
public:
static Singleton* getInstance();
void method();
~Singleton()
{
instanceFlag = false;
}
};
bool Singleton::instanceFlag = false;
Singleton* Singleton::single = NULL;
Singleton* Singleton::getInstance()
{
if(! instanceFlag)
{
single = new Singleton();
instanceFlag = true;
return single;
}
else
{
return single;
}
}
void Singleton::method()
{
cout << "Method of the singleton class" << endl;
}
int main()
{
Singleton *sc1,*sc2;
sc1 = Singleton::getInstance();
sc1->method();
sc2 = Singleton::getInstance();
sc2->method();
return 0;
}
Explanation
If we create any object of this class then the static object (player) will be returned and assigned to the new object.
Finally only one object will be there. The point is not how many times something gets executed, the point is, that the work is done by a single instance of the the class. This is ensured by the class method Singleton::getInstance().
As you can see in the above code,Client can access any instance of the singleton only through the getInstance() method.Once an instance is created,the instanceFlag value becomes true and then any further objects pointers created will be given the reference to the same object that has been created.
Also,make sure you notice the presence of a private constructor.This ensures that no new objects of the class are created and that all the class pointers get the same reference to work on.
Patterns (contd)Software Development ProcessDesign patte.docxdanhaley45372
Patterns (contd)
Software Development Process
Design patterns used to handle change
More time extending and changing code than developing it.
The Strategy design pattern handle change by selecting from a family of external algorithms rather than rewrite.
Design point: Make code closed for modification of code, but open for extension
Problem
Computer object created
Description Method returns
Getting a Computer
Problem
Program has to change every time
Customer changes options
Decorator Pattern
Wrapper code used to extend your core code
Extend a class dynamically at runtime
Decorator uses wrapper code to extend core functionality - decorating the code
Decorator Pattern
description() returns “You are getting a computer”
Wrapper description() returns
“You are getting a computer and a disk”
Wrapper description() returns
“You are getting a computer and a disk and a monitor”
Decorator Pattern
Core component: Computer
Variables holding computer objects should also be able to hold objects that wrap computer objects.
Extend the wrapper classes from the Computer class.
Abstract class cannot be instantiated
Ensures all wrappers are consistent
Developers have to provide their own description
Decorator Pattern
Method calls the core computer object’s
description method and adds “and a disk”
Decorator Pattern
Method calls the core computer object’s
description method and adds “and a disk”
Extend the core object by wrapping it in decorator wrappers. Avoids modification of the core code.
Each successive wrapper called the description method of the object it wrapped and added something to it.
Factory Pattern
Based on type, call the
Connection method
Factory Pattern
Create a method that returns the
correct connection type
Factory Pattern
New operator used to create OracleConnection objects.
New operator used to create SqlServerConnection objects, and MySqlConnection objects.
New operator to instantiate many different concrete classes
Code becomes larger and needs to be replicated in many places
Factor that code out into a method.
Code keeps changing
Encapsulate code into a factory object
Goal: Separate out the changeable code and leave the core code closed for modification
Building the Factory
Creating the Factory
FirstFactory class encapsulates the connection object creation
Pass to it the type of connection (“Oracle”, “SQL Server”,)
Use the factory object to create connection objects with a factory method named createConnection
Building the Factory
Create the FirstFactory class.
Save the type of the database, passed to the FirstFactory class’s constructor.
Object-creation code changes
Check which type of object to be created
(OracleConnection, SqlServerConnection,
and then create it.
Factory Class
Create the Abstract Connection Class
Core code should not be modified or has to be modified
as little as possible.
Using the connection object returned by the
new factory object
Use t.
Clean architecture with asp.net core by ArdalisSteven Smith
Clean Architecture with ASP.NET Core
ASP.NET Core provides better support for clean, testable, maintainable architectures than any of its predecessors. Learn the underlying principles that apply to project/solution organization, how best to arrange your projects to support clean code, and how to refactor existing solutions toward this architecture. Examples will use ASP.NET Core but the principles covered apply to all languages and platforms.
About Steve
Steve Smith (@ardalis) is an entrepreneur and software developer with a passion for building quality software as effectively as possible. Steve has published several courses on Pluralsight, covering DDD, SOLID, design patterns, and software architecture. He’s a Microsoft ASP.NET MVP and Insider, a frequent speaker at developer conferences, an author, and a trainer. Steve works with companies that want to avoid the trap of technical debt by helping their teams deliver quality software, quickly. Steve and his team have been described by clients as a “force multiplier”, amplifying the value of existing development teams. Steve’s client list includes Microsoft, Quicken Loans, Celina Insurance, and many other satisfied customers.
Finding Patterns in the Clouds - Cloud Design PatternsSteven Smith
Cloud computing is quickly becoming the new normal for enterprise software developers. Whether it's more traditional Infrastructure-as-a-Service, container-based deployments, or fully serverless deployments, moving to the cloud offers something for almost every organization. But with it come new challenges for ensuring your applications are robust, scalable, fast, and don't overuse utilization-billed resources. Design patterns offer solutions to known challenges that can help you quickly recognize and address problems as you encounter them, saving you and your organization time and money. Come learn a few practical patterns that will help you avoid common problems with cloud-based systems.
Introducing domain driven design - dogfood con 2018Steven Smith
DDD provides a set of patterns and practices for tackling complex business problems with software models. Learn the basics of DDD in this session, including several principles and patterns you can start using immediately even if your project hasn't otherwise embraced DDD. Examples will primarily use C#/.NET.
Introducing Domain Driven Design - codemashSteven Smith
DDD provides a set of patterns and practices for tackling complex business problems with software models. Learn the basics of DDD in this session, including several principles and patterns you can start using immediately even if your project hasn't otherwise embraced DDD. Examples will primarily use C#/.NET.
Improving the Design of Existing SoftwareSteven Smith
Combat technical debt and keep your code maintainable using these principles, heuristics, and refactoring techniques. Presented October 2017 at DogfoodCon in Columbus, OH. Learn more at http://bit.ly/PS-Refactoring
Given at DogFoodCon 2016 in Columbus, Ohio
Domain Events, a Domain-Driven Design (DDD) pattern, provide a way to decouple your code. Rather than hard-coding a series of steps that must be completed in response to a particular action a user takes, that action can raise an event. Handlers for an event can be added without changing the code responsible for raising the event, resulting in a more extensible design. Coupled with SignalR or push notifications in the UI layer, domain events can trigger live updates, even to web-based applications and mobile apps.
Improving the Quality of Existing SoftwareSteven Smith
Given at DogFoodCon 2016 in Columbus, Ohio
As developers, most of our time is spent working on existing software – even if it’s just the software we wrote ourselves, yesterday. And over time, software rots. If were not diligent, our beautiful code can degrade into a worthless mess. Keeping our code in working condition is no different than changing the oil in our car “ its preventive maintenance. In this session, Steve will cover some common places to look for signs of degradation in existing applications, and describe the steps we can take to improve our code. Examples will use C# and primarily ASP.NET.
Breaking Dependencies to Allow Unit Testing - DevIntersection Spring 2016Steven Smith
Unit testing software can be difficult, especially when the software wasn't designed to be testable. Dependencies on infrastructure concerns and software we don't control are one of the biggest contributors to testing difficulty. In this session, you'll learn the difference between unit tests and other kinds of tests, how to recognize and invert dependencies, and how to unit test your code's interactions with these dependencies without testing the infrastructure itself.
Improving the Quality of Existing Software - DevIntersection April 2016Steven Smith
How do you improve the quality of your existing software, while continuing to add value for your customers? What are some heuristics and code smells you can look for, and principles and patterns you can use to guide you, as you make your software better over time instead of worse? How can we improve our skills and techniques so that writing high quality software becomes our default, fastest way of working?
Breaking Dependencies to Allow Unit TestingSteven Smith
Unit testing software can be difficult, especially when the software wasn't designed to be testable. Dependencies on infrastructure concerns and software we don't control are one of the biggest contributors to testing difficulty. In this session, you'll learn the difference between unit tests and other kinds of tests, how to recognize and invert dependencies, and how to unit test your code's interactions with these dependencies without testing the infrastructure itself.
Improving the Quality of Existing SoftwareSteven Smith
How do you improve the quality of your existing software, while continuing to add value for your customers? What are some heuristics and code smells you can look for, and principles and patterns you can use to guide you, as you make your software better over time instead of worse?
ASP.NET 5 has been redesigned with an emphasis on speed, composability, and cross-platform support. The new ASP.NET is leaner, faster, open source, and fixes many of the inconsistencies and problems present in ASP.NET today.
Domain Events, a Domain-Driven Design (DDD) pattern, provide a way to decouple your code. Rather than hard-coding a series of steps that must be completed in response to a particular action a user takes, that action can raise an event. Handlers for that event can be added without changing the code responsible for raising the event, resulting in a more extensible design. Coupled with SignalR in the UI layer, domain events can trigger updates to the application without the user having to refresh the application.
My 2004 deployment to Iraq and missions as a combat engineer platoon leader in support of EOD missions. Presented to Ravenna, Ohio Daughters of the American Revolution chapter 18 October 2014
Domain-Driven Design provides a set of principles and patterns that are useful for tackling complex software problems. In this session, we'll review a few DDD concepts and demonstrate how they can be applied within an ASP.NET MVC Solution to keep concerns separated and implementation details loosely coupled from business logic and your domain model.
Presented at FalafelCON 2014, San Francisco, September 2014
Breaking Dependencies to Allow Unit TestingSteven Smith
Unit testing software can be difficult, especially when the software wasn't designed to be testable. Dependencies on infrastructure concerns and software we don't control are one of the biggest contributors to testing difficulty. In this session, you'll learn the difference between unit tests and other kinds of tests, how to recognize and invert dependencies, and how to unit test your code's interactions with these dependencies without testing the infrastructure itself.
Presented at FalafelCON 2014, San Francisco, September 2014
Improving The Quality of Existing SoftwareSteven Smith
Presented at DevReach 2013.
As developers, most of our time is spent working on existing software. Sure, occasionally we get the chance to fire up a new Solution in Visual Studio, and that can be exciting. But after the first day, we find ourselves once more having to deal with the work we did yesterday. And today, we know more than we did yesterday, so there are things we’d do differently, if we had it to do over.
Over time, software rots. If we’re not diligent, our beautiful code can degrade into a worthless mess. Keeping our code in working condition is no different than changing the oil in our car – it’s preventive maintenance. In this session, Steve will look at some common places to look for signs of degradation in existing applications, and steps to take to improve the code. Examples will use C# and primarily ASP.NET.
AI Pilot Review: The World’s First Virtual Assistant Marketing SuiteGoogle
AI Pilot Review: The World’s First Virtual Assistant Marketing Suite
👉👉 Click Here To Get More Info 👇👇
https://sumonreview.com/ai-pilot-review/
AI Pilot Review: Key Features
✅Deploy AI expert bots in Any Niche With Just A Click
✅With one keyword, generate complete funnels, websites, landing pages, and more.
✅More than 85 AI features are included in the AI pilot.
✅No setup or configuration; use your voice (like Siri) to do whatever you want.
✅You Can Use AI Pilot To Create your version of AI Pilot And Charge People For It…
✅ZERO Manual Work With AI Pilot. Never write, Design, Or Code Again.
✅ZERO Limits On Features Or Usages
✅Use Our AI-powered Traffic To Get Hundreds Of Customers
✅No Complicated Setup: Get Up And Running In 2 Minutes
✅99.99% Up-Time Guaranteed
✅30 Days Money-Back Guarantee
✅ZERO Upfront Cost
See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
Do you want Software for your Business? Visit Deuglo
Deuglo has top Software Developers in India. They are experts in software development and help design and create custom Software solutions.
Deuglo follows seven steps methods for delivering their services to their customers. They called it the Software development life cycle process (SDLC).
Requirement — Collecting the Requirements is the first Phase in the SSLC process.
Feasibility Study — after completing the requirement process they move to the design phase.
Design — in this phase, they start designing the software.
Coding — when designing is completed, the developers start coding for the software.
Testing — in this phase when the coding of the software is done the testing team will start testing.
Installation — after completion of testing, the application opens to the live server and launches!
Maintenance — after completing the software development, customers start using the software.
Unleash Unlimited Potential with One-Time Purchase
BoxLang is more than just a language; it's a community. By choosing a Visionary License, you're not just investing in your success, you're actively contributing to the ongoing development and support of BoxLang.
Enterprise Resource Planning System includes various modules that reduce any business's workload. Additionally, it organizes the workflows, which drives towards enhancing productivity. Here are a detailed explanation of the ERP modules. Going through the points will help you understand how the software is changing the work dynamics.
To know more details here: https://blogs.nyggs.com/nyggs/enterprise-resource-planning-erp-system-modules/
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppGoogle
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
👉👉 Click Here To Get More Info 👇👇
https://sumonreview.com/ai-fusion-buddy-review
AI Fusion Buddy Review: Key Features
✅Create Stunning AI App Suite Fully Powered By Google's Latest AI technology, Gemini
✅Use Gemini to Build high-converting Converting Sales Video Scripts, ad copies, Trending Articles, blogs, etc.100% unique!
✅Create Ultra-HD graphics with a single keyword or phrase that commands 10x eyeballs!
✅Fully automated AI articles bulk generation!
✅Auto-post or schedule stunning AI content across all your accounts at once—WordPress, Facebook, LinkedIn, Blogger, and more.
✅With one keyword or URL, generate complete websites, landing pages, and more…
✅Automatically create & sell AI content, graphics, websites, landing pages, & all that gets you paid non-stop 24*7.
✅Pre-built High-Converting 100+ website Templates and 2000+ graphic templates logos, banners, and thumbnail images in Trending Niches.
✅Say goodbye to wasting time logging into multiple Chat GPT & AI Apps once & for all!
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✅ Beginner-friendly!
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✅Risk-Free: 30-Day Money-Back Guarantee!
✅Commercial License included!
See My Other Reviews Article:
(1) AI Genie Review: https://sumonreview.com/ai-genie-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
#AIFusionBuddyReview,
#AIFusionBuddyFeatures,
#AIFusionBuddyPricing,
#AIFusionBuddyProsandCons,
#AIFusionBuddyTutorial,
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#HowDoesAIFusionBuddyWorks
Globus Connect Server Deep Dive - GlobusWorld 2024Globus
We explore the Globus Connect Server (GCS) architecture and experiment with advanced configuration options and use cases. This content is targeted at system administrators who are familiar with GCS and currently operate—or are planning to operate—broader deployments at their institution.
Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
Yet, they often turn into annoying tasks riddled with frustration, hostility, unclear feedback and lack of standards. How can we improve this crucial process?
In this session we will cover:
- The Art of Effective Code Reviews
- Streamlining the Review Process
- Elevating Reviews with Automated Tools
By the end of this presentation, you'll have the knowledge on how to organize and improve your code review proces
Essentials of Automations: The Art of Triggers and Actions in FMESafe Software
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We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
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10. Singleton: Intent
Ensure a class has only one instance
Make the class itself responsible for
keeping track of its sole instance
“There can be only one”
14. Singleton Consequences
The default implementation is not thread-safe
Avoid in multi-threaded environments
Avoid in web server scenarios (e.g. ASP.NET)
Introduce tight coupling among collaborating
classes
Singletons are notoriously difficult to test
Commonly regarded as an anti-pattern
Some commercial tools
can be used to mock and
test Singletons
But why would you
intentionally write code
you can only test with
certain premium tools?
15. Singleton Consequences
Violate the Single Responsibility
Principle
Class is responsible for managing its
instances as well as whatever it does
Using an IOC Container it is
straightforward to avoid the coupling
and testability issues
17. Object Lifetime in ASP.NET Core
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
// you don’t need to implement singleton behavior in class!
services.AddSingleton<ISomeService>();
}
18. Singleton behavior is fine and
often desirable.
Implementing this behavior using the
Singleton Pattern on the class itself is
usually not ideal.
20. Strategy: Intent
Encapsulate a family of related algorithms
Let the algorithm vary and evolve independently from the class(es) that use it
Allow a class to maintain a single purpose
Single Responsibility Principle (SRP)
Also enables Open/Closed Principle (OCP)
Learn more about SRP and OCP in my Pluralsight course:
http://bit.ly/SOLID-OOP
22. Strategy : Common Usage
Dependency Inversion and Dependency Injection
Decouple class dependencies and responsibilities
Refactoring Steps
Create interfaces for each responsibility
Inject the implementation of the interface via the constructor
Move the implementation to a new class that implements the interface
23. Hidden Dependencies
Classes should declare their dependencies via their constructor
Follow the Explicit Dependencies Principle
Avoid hidden dependencies
Anything the class needs but which is not passed into constructor
Avoid making non-stateless static calls
Avoid directly instantiating classes (except those with no dependencies, like
strings)
Instead, move these calls to an interface, and call a local instance of the interface
24. “New is Glue”
Be conscious of the
consequences of using
“new”
If you need loose coupling,
replace “new” with Strategy
Pattern
http://flic.kr/p/aN4Zv
“new” creates tight coupling
between classes
28. Data Access Evolution
Initially no separation of concerns
Data access logic baked directly into UI
ASP.NET Data Source Controls
Classic ASP scripts
Data access logic in UI layer via codebehind
ASP.NET Page_Load event
ASP.NET Button_Click event
User Interface
Database
Compile Time
Runtime
29. Data Access : Helper
Classes
Calls to data made through a
utility
Example: Data Access
Application Block (SqlHelper)
Logic may still live in UI layer
Or a Business Logic Layer may
make calls to a Data Access
Layer which might then call the
helper
User Interface
Database
Compile Time
Runtime
Helper Class
30. What’s Missing?
Abstraction!
No way to abstract away data
access
Tight coupling
Leads to Big Ball of Mud
system
Solution:
Depend on interfaces, not
concrete implementations
What should we call such
interfaces? Repositories!
User Interface
Database
Compile Time
Runtime
Core
IFooRepository
Infrastructure
SqlFooRepository
31. Repository
A Data Access Pattern
Introduced as part of Domain-Driven Design, but very popular outside of DDD as well
Separates persistence responsibility from business classes
Enables
Single Responsibility Principle
Separation of Concerns
Testability
32. Repository
Frequently Separate Interfaces for Each Entity in
Application
E.g. CustomerRepository, OrderRepository, etc.
Or using Generics: IRepository<TEntity>
May also organize Repositories based on
Reads vs. Writes
Bounded Contexts (a Domain-Driven Design concept)
33. Consider!
Repositories should return domain objects
Don’t let persistence concerns leak through the repository interface
What should Repository List methods return?
IEnumerable<T>
IQueryable<T>
What about deferred execution?
What about lazy loading?
35. Repository - Example
(1)
Create/extend an interface to represent
the data access you need
(2)
Copy the
implementation from
your class into a new
class implementing this
interface.
(3)
Inject the interface using the
Strategy Pattern. Use the local field
of this interface type in place of
previous implementation code.
36. Where do Repositories Live?
Place interfaces in Core
Core includes Model classes and most business logic
Core has no dependencies (ideally)
Place implementation in Infrastructure
Infrastructure references Core
UI layer (app entry point) references Core
Accesses Infrastructure at runtime
Responsible for creating object graph, either manually or via an
IOC Container
38. Proxy
A class that controls access to another
Implemented via subclass or via
delegation using a common interface
Frequent use cases:
Remote Proxy for web services / network calls
Lazy loading implementations
Security / access control
42. Adding Caching to a Repository
Caching is frequently added to query methods in repositories
Caching logic is a separate concern and should live in a separate class from the
main data access logic
Proxy pattern provides a straightforward means to control access to the “real”
data, versus the cache
47. Command
Represent an action as an object
Decouple performing the action from the client that is issuing
the command
A Command is a message
Common scenarios:
Delayed execution
Logging activity
Enabling Undo / Revoke Transaction functionality
48. Command : Usage
Combine with messaging for scalability
What happens when you complete an order from Amazon?
50. Factory: Intent
Separate object creation from the decision of which object to create
Defer creation of objects
Only create them if and when needed
Add new classes and functionality without breaking client code
Only factory needs to know about new types available
Store possible objects to create outside of program
Configuration
Persistent Storage
Plug-in assemblies
51. Lazy<T>
Provide simple built-in Factory behavior for lazy loading
Available in .NET Framework 4, 4.5, later
Learn more:
http://msdn.microsoft.com/en-us/magazine/ff898407.aspx
54. Alternate Factories
Write your own method
Use an IOC Container
Lambda expressions
Func<ExpensiveObject> factory
() => new ExpensiveObject();
“IOC Containers are
basically just factories on
steroids.”
57. Nulls
“I call it my billion-dollar mistake. It
was the invention of the null
reference in 1965.”
Sir Charles Antony Richard Hoare
58. Null Object
Replace null with an actual instance object with
default values
Reduce number of null checks in application
Allow methods on this “null” object to be called,
without generating reference exceptions
59. Use When…
A method requires a collaborator
And you want to ensure it is never null
It’s necessary to support a “do nothing” option
Especially with Command or Strategy
60. Implementation
BaseType
Real Objects
The Null object is simply another implementation of a base
type (class or interface)
For ease of use, it is often added as a static property on BaseType (e.g.
BaseType.Null or BaseType.NotSet)
NullObject
61. Nulls Break Polymorphism
Polymorphism is a key benefit of OO systems
Null breaks polymorphism – calling methods on null instances results in
exceptions
64. Practice PDD
Pain Driven Development
If it’s causing pain, fix it.
“Don’t apply every pattern
you know to a problem
from the start; practice
Pain Driven Development.”
This is where a lot of people work. Don’t be these guys. When you have a lot of wood to cut, it pays off to periodically sharpen the saw. Sharpening the saw is one of the seven habits of highly effective people. Take time to improve your skills, and practice, and in the long run you will be more effective.
Contact me if you’d like a 30-day pass to Pluralsight. Please consider some of my courses on design patterns, architecture, and domain-driven design.
General, reusable solutions to common problems
Not a complete, finished solution
A template, recipe, or approach to solving certain problems
Each has a specific name, so we can discuss common elements of design using a common vocabulary
Learning anything – a musical chord, a martial arts technique, etc.
Zero: You used a what? Never heard of it.
Awakening: Wow, I just learned how XYZ pattern can improve my design. I’m not really sure where it would work in my code, but I’m definitely looking.
Overzealous: I totally “get” the XYZ pattern; I’m adding it everywhere I can shoehorn it into my code. My design’s gonna be better now, for sure!
Mastery: In response to some specific design pain points, the XYZ pattern was a logical next step and was achieved through a simple refactoring.
Design pattern names provide placeholders or complex abstractions and sets of refactorings.
Consider the difference between:
We have some tight coupling to the database here. We can probably fix it if we apply these refactorings;
extract an interface,
extract a method,
Extract a class,
Replace local with parameter
OR
Let’s apply the Repository pattern to fix it.
Used Regularly or Daily by most respondents
Factory (194)
Repository (185)
Iterator (139)
Adapter/Wrapper (122)
Observer (113)
Command (106)
Singleton (105)
Strategy (101)
Proxy (91)
This joke is probably dating me – how many of you know the Highlander these days?
It’s possible for the new Singleton(); line to be called more than once.
Jon Skeet lays out several different ways to implement the Singleton pattern in C#, with different performance and thread safety considerations.
Here are three example registration commands using an IOC container, in this case StructureMap. If you’re not familiar with IOC containers, they’re basically just factories on steroids, which you configure to create instances of types according to certain rules.
In the first case, one new instance of the type is created per thread, or per HTTP request. Thus, in an ASP.NET application, a new DbContext will be created with each new web request, but if we used this same code in a non-web context, such as in an integration test, it would create a single instance per thread. In the second case, the Singleton() call will literally configure the lifetime of the instance to be a singleton, with one and only one instance available for the life of this application. In the last, default case, each new request for an instance will get its own, separate instance of the requested type.
The benefit of this approach is that it makes it very clear which objects are configured with which lifetimes, and none of the objects themselves are cluttered with these concerns. The resulting code has less repetition, is simpler, and its classes have fewer responsibilities.
Add Kragle slide next
If you’re working with web forms, whether adding new features or maintaining a large codebase in which better dependency management would help, realize that you can use dependency injection and the strategy pattern there, too. Doing so with Structuremap typically follows three steps.
Create a basepage class and call ObjectFactory.BuildUp(this) in its constructor. This will populate any properties Structuremap knows about in the object.
Configure StructureMap to know about certain types by telling it to set all properties of that type. In this case, we’re telling Structuremap to populate any property it finds of type IAlbumRepository
In your actual page, add a property of the interface type you want injected. You can now count on this property being supplied by Structuremap.
Remember, although your current strategy may be beautiful, you need to occasionally check to see how well it’s actually working. Using the strategy pattern, if you find that a particular implementation isn’t working, you can easily swap it out for another one.
In my own career as a developer, I’ve seen an evolution in how most data access is performed. I started with classic ASP and soon after, the first version of ASP.NET. In both cases, there was typically little separation of concerns between UI, business rules, and data access. This tended to result in a lot of duplicate concepts and code, as well as direct dependence on a database.
To address the duplication, helper classes were often created to take repetitive tasks and centralize them. However, in this case the runtime program flow still mirrored the compile time dependency tree, in both cases targeting a database. This made testing such applications difficult.
The problem with these approaches is that there is no abstraction layer between the application and its infrastructure – in this case the database.
Consider grabbing repository image from DDD slide here
Split into two slides
Note – this cannot easily be tested without an actual database instance in place.
Add image showing Onion Architecture and/or a simple solution with Core, Infrastructure, and Web.
Note that the structure of the Proxy is very similar to the Strategy pattern, which we already saw (click). The key difference between the two is in the intent. Note that this is just one Proxy implementation – it can also be achieved with a proxy class that inherits from the subject class, rather than sharing a common interface implementation.
TODO: Show an example of adding caching logic to a repository without any separation of concerns.
Consider starting with an MVC method that does direct data access without any repository, uses caching, etc, and lament its lack of testability. Perhaps a Music Store method, maybe with some modification.
Maybe look for an image representing military orders being received
Ask about Amazon and what actually happens when you place an order there, compared to with most other online stores.
The background for this slide is the FirstOrDefault image I liked for the Null Object pattern
Some polymorphic code
Change this to something that isn’t displayed in the UI layer, such as a function that must be called or a number to be summed.
Apply patterns via refactoring,
Not Big Design Up Front
Show the MvcMusicStore application
Hg clone https://hg.codeplex.com/forks/ssmith/mvcmusicstorerepositorypattern
Talk about the CacheDependencyBug in AdSignia and how it was introduced by moving a hard-coded instantiation to a parameter, and then fixed by replacing the parameter with a Factory (lambda).
Update with imagery and review of patterns and when to use them. Fewer words.
Don’t be too busy to improve
Avoid adding coupling to your system with Singleton
Decouple specific implementation from use with Strategy
Avoid hidden dependencies; remember New is Glue!
Decouple your database with Repository
Decouple caching, lazy loading, and other access concerns with Proxy
Decouple execution of other actions with Commands
Decouple construction with Factory – remember Lazy<T> and lambda as factory shortcuts
Cut down on prolific null checks with the Null Object Pattern
Don’t try to use every pattern up front – practice Pain Driven Development
Update with imagery and review of patterns and when to use them. Fewer words.
Don’t be too busy to improve
Avoid adding coupling to your system with Singleton
Decouple specific implementation from use with Strategy
Avoid hidden dependencies; remember New is Glue!
Decouple your database with Repository
Decouple caching, lazy loading, and other access concerns with Proxy
Decouple execution of other actions with Commands
Decouple construction with Factory – remember Lazy<T> and lambda as factory shortcuts
Cut down on prolific null checks with the Null Object Pattern
Don’t try to use every pattern up front – practice Pain Driven Development
Update with imagery and review of patterns and when to use them. Fewer words.
Don’t be too busy to improve
Avoid adding coupling to your system with Singleton
Decouple specific implementation from use with Strategy
Avoid hidden dependencies; remember New is Glue!
Decouple your database with Repository
Decouple caching, lazy loading, and other access concerns with Proxy
Decouple execution of other actions with Commands
Decouple construction with Factory – remember Lazy<T> and lambda as factory shortcuts
Cut down on prolific null checks with the Null Object Pattern
Don’t try to use every pattern up front – practice Pain Driven Development
Update with imagery and review of patterns and when to use them. Fewer words.
Don’t be too busy to improve
Avoid adding coupling to your system with Singleton
Decouple specific implementation from use with Strategy
Avoid hidden dependencies; remember New is Glue!
Decouple your database with Repository
Decouple caching, lazy loading, and other access concerns with Proxy
Decouple execution of other actions with Commands
Decouple construction with Factory – remember Lazy<T> and lambda as factory shortcuts
Cut down on prolific null checks with the Null Object Pattern
Don’t try to use every pattern up front – practice Pain Driven Development
Update with imagery and review of patterns and when to use them. Fewer words.
Don’t be too busy to improve
Avoid adding coupling to your system with Singleton
Decouple specific implementation from use with Strategy
Avoid hidden dependencies; remember New is Glue!
Decouple your database with Repository
Decouple caching, lazy loading, and other access concerns with Proxy
Decouple execution of other actions with Commands
Decouple construction with Factory – remember Lazy<T> and lambda as factory shortcuts
Cut down on prolific null checks with the Null Object Pattern
Don’t try to use every pattern up front – practice Pain Driven Development
Update with imagery and review of patterns and when to use them. Fewer words.
Don’t be too busy to improve
Avoid adding coupling to your system with Singleton
Decouple specific implementation from use with Strategy
Avoid hidden dependencies; remember New is Glue!
Decouple your database with Repository
Decouple caching, lazy loading, and other access concerns with Proxy
Decouple execution of other actions with Commands
Decouple construction with Factory – remember Lazy<T> and lambda as factory shortcuts
Cut down on prolific null checks with the Null Object Pattern
Don’t try to use every pattern up front – practice Pain Driven Development
Update with imagery and review of patterns and when to use them. Fewer words.
Don’t be too busy to improve
Avoid adding coupling to your system with Singleton
Decouple specific implementation from use with Strategy
Avoid hidden dependencies; remember New is Glue!
Decouple your database with Repository
Decouple caching, lazy loading, and other access concerns with Proxy
Decouple execution of other actions with Commands
Decouple construction with Factory – remember Lazy<T> and lambda as factory shortcuts
Cut down on prolific null checks with the Null Object Pattern
Don’t try to use every pattern up front – practice Pain Driven Development
Decouple construction with Factory
Remember Lazy<T> and lambda as factory shortcuts
Remember IOC containers are factories on steroids
Decouple construction with Factory
Remember Lazy<T> and lambda as factory shortcuts
Remember IOC containers are factories on steroids
Don’t try to apply every pattern you know up front.