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DESIGN-PATTERNS QUESTIONS

Good case for a Null Object Pattern? (Provide some service with a mailservice)
Good case for a Null Object Pattern? (Provide some service with a mailservice)
help you fix your problem I am a fan of this pattern. I'm also a fan of renaming objects to match semantics.As you know, the two benefits you get from the use of a NullObject are:
TAG : design-patterns
Date : November 19 2020, 07:01 PM , By : Sush
How to refactor method which performs multiple steps (dependent on each other)?
How to refactor method which performs multiple steps (dependent on each other)?
Hope that helps Well, there is no general answer to that. But about your example of creating and setting up objects, look into the Builder Pattern and the Factory Patten. The command pattern is useful when you have different possible actions (e.g. me
TAG : design-patterns
Date : November 15 2020, 07:01 PM , By : user3859985
Progress Bar design patterns?
Progress Bar design patterns?
will be helpful for those in need A very interesting approach is the user perception.Chris Harrison published a paper on how user perceives the time passing depending on the progress reported by the progress bar (although the actual duration was obvi
TAG : design-patterns
Date : November 10 2020, 07:00 PM , By : Afzaal Ahmad Zeeshan
"Presenter First" vs "Passive View" MVP?
"Presenter First" vs "Passive View" MVP?
Hope this helps Maybe i'm wrong, but from what i understand :The mvp pattern used in presenter first approach is a slight variation around the passive view described by martin fowler. In some case, when the business object (or model) is too hard to m
TAG : design-patterns
Date : November 08 2020, 07:01 PM , By : user3857745
Following Domain Driven Design with MVVM/WPF
Following Domain Driven Design with MVVM/WPF
this will help This isn't the answer you are directly looking for, but in order to keep separation of concerns, I would not use your domain pocos to make up the viewmodel. I would map the domain objects to completely separate viewmodel objects. This
TAG : design-patterns
Date : November 06 2020, 07:00 PM , By : Soufiane
Is MFC is based on any design pattern,if so which design pattern?
Is MFC is based on any design pattern,if so which design pattern?
Hope that helps MFC and Design PatternsAs we all know, MFC is one of the popular class libraries used by C++ programmers. The success story behind MFC is its class architecture and design principles adopted by the developers of MFC, which makes it on
TAG : design-patterns
Date : November 05 2020, 07:01 PM , By : Alexey Goldobin
design pattern compose or inherit?
design pattern compose or inherit?
To fix the issue you can do This article should give you a complete answer: Design Principles from Design Patterns: Composition versus inheritanceI quote a straight answer from Erich Gamma here:
TAG : design-patterns
Date : October 28 2020, 08:00 PM , By : user3854014
Can more than one objects aggregate or acquaint or instantiate the same object?
Can more than one objects aggregate or acquaint or instantiate the same object?
this one helps. To my understanding and the common definitions I know, Composition is an association where the lifetime of the associated objects is tied to the lifetime of the owner. Aggregation describes an association where the lifetime of the agg
TAG : design-patterns
Date : October 12 2020, 03:00 AM , By : TechnoRecluse
Why is factory method not necessary when "instantiation takes place in an operation that subclasses can easily over
Why is factory method not necessary when "instantiation takes place in an operation that subclasses can easily over
may help you . Let me start by giving a java implementation of the factory method pattern:
TAG : design-patterns
Date : October 11 2020, 06:00 PM , By : btmonier
Choosing the correct Flutter design pattern
Choosing the correct Flutter design pattern
hope this fix your issue You need to use stateManagement.It exist BLoC but you can also use Provider with no problem and it will solve your problem.
TAG : design-patterns
Date : October 10 2020, 12:00 PM , By : Mark Harrigan
What are the differences between concurrency computational models and concurrency patterns?
What are the differences between concurrency computational models and concurrency patterns?
like below fixes the issue So, concurrency computational models are way of modeling and thinking concurrent systems mathematically . For example, the actor model in a very theory heavy research paper wouldn't really say anything about how an actor ca
TAG : design-patterns
Date : October 10 2020, 04:00 AM , By : RFlores
How can we convert a function without a parameter into a one-parameter function?
How can we convert a function without a parameter into a one-parameter function?
should help you out There are no functions without parameters, and there's no conversion going on with multi-parameter functions. As the quote says, "every function is a one parameter function". There's always just one parameter, no more and no less.
TAG : design-patterns
Date : October 09 2020, 02:00 PM , By : boss lance
Kotlin pattern construction with different parameters
Kotlin pattern construction with different parameters
fixed the issue. Will look into that further You probably might want to use a strategy pattern in combination with good old polymorfismFirst, you can add an abstract class to your concrete classes
TAG : design-patterns
Date : October 06 2020, 01:00 AM , By : jhonny
Istio Service Mesh rollout into Prod (Design / Architectural decisions)
Istio Service Mesh rollout into Prod (Design / Architectural decisions)
I hope this helps . Istio announced that version 1.0 is production-ready. Here are some links about the design/architectural decisions to deploy istio in production: Benchmarking istio in production Istio best practices Istio deployment models Perfor
TAG : design-patterns
Date : September 16 2020, 05:00 AM , By : Chao Jiang
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