Recent questions tagged Design

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design patterns - data structure used to implement UNDO and REDO option

I want to implement UNDO and REDO option(as we see in MS word etc). Can you suggest me a data structure for it, and how can i implement it.? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - C++ code for state machine

This was an interview question to be coded in C++: Write code for a vending machine: Start with a simple ... for large scale software systems. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Fat models and skinny controllers sounds like creating God models

I've been reading a lot of blogs which advocate the fat models and skinny controllers approach, esp. the Rails ... falling into the God pattern? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Double dispatch/multimethods in C++

I have a question on C++ double dispatch. In the code below, I want the results from the second set to match ... .processObj(dc3p1); return 0; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Where do you like to catch exceptions and why?

Where do you like to catch exceptions and why? I'm interested in seeing where people find it useful to put ... reason per answer please. Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Circular Dependency in C++

The facts: I have two predominant classes: Manager and Specialist. There are several different types of Specialists. ... is a bad thing. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Static factory methods vs Instance (normal) constructors?

In a language where both are available, would you prefer to see an instance constructor or a static method that ... chars); new String(chars); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Why doesn't more Java code use PipedInputStream / PipedOutputStream?

I've discovered this idiom recently, and I am wondering if there is something I am missing. I've never seen it ... They don't use OS pipes. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Monostate vs. Singleton

What are the scenarios when one would use a Monostate pattern instead of singleton inorder to maintain a ... Monostate instead of Singletons. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - What would a Log4Net Wrapper class look like?

I have been looking for a logging framework for .net (c#) and decided to give log4net a go after reading ... the wrapper be a singleton class? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Why should I isolate my domain entities from my presentation layer?

One part of domain-driven design that there doesn't seem to be a lot of detail on, is how and why ... our domain objects from the interface? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - javascript: execute a bunch of asynchronous method with one callback

I need to execute a bunch of asynchronous methods (client SQLite database), and call only one final callback. Of ... ... Thanks in advance ! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - anti-if campaign

I recently ran against a very interesting site that expresses a very interesting idea — the anti-if campaign. You ... break; //etc... } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - clean C++ granular friend equivalent? (Answer: Attorney-Client Idiom)

Why does C++ have public members that anyone can call and friend declarations that expose all private members to ... of less direct protection. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Why is IoC / DI not common in Python?

In Java IoC / DI is a very common practice which is extensively used in web applications, nearly all available ... 't widely used in Python. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Factory, Abstract Factory and Factory Method

I am really confused about these three terms. My understanding is that: in the Factory pattern, there is no ... same as the Factory pattern? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - How to implement a FSM - Finite State Machine in Java

I have something to do for work and I need your help. We want to implement a FSM - Finite State Machine, to ... that helps me. Thanks a lot. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - What is a Proxy in Doctrine 2?

I just finished reading all the Doctrine 2 documentation, I started my own sandbox, I understood most of the ... themselves in the entity class? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Is it possible to create static classes in PHP (like in C#)?

I want to create a static class in PHP and have it behave like it does in C#, so Constructor is automatically ... :greet(); // Hello There! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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design patterns - Basic API in golang antipattern?

Correct me if I'm wrong, but for my understanding of an API is that it is something that allows me to modify ... . What am I doing wrong here? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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