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Traits vs. interfaces

... must implement. When a trait is use'd the implementations of the methods come along too--which doesn't happen in an Interface. That is the biggest difference. From the Horizontal Reuse for PHP RFC: Traits is a mechanism for code reuse in single inheritance languages such as PHP. A Trait is i...
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live output from subprocess command

I'm using a python script as a driver for a hydrodynamics code. When it comes time to run the simulation, I use subprocess.Popen to run the code, collect the output from stdout and stderr into a subprocess.PIPE --- then I can print (and save to a log-file) the output information, and check for ...
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Difference between sh and bash

... What is sh sh (or the Shell Command Language) is a programming language described by the POSIX standard. It has many implementations (ksh88, dash, ...). bash can also be considered an implementation of sh (see below). Because sh is a specification, not...
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Why is it impossible to override a getter-only property and add a setter? [closed]

...  |  show 14 more comments 39 ...
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Convert JavaScript string in dot notation into an object reference

... issues, AND you won't need to build upon your abstraction to make it more complicated later. In fact, if this will reduce code complexity and keep things simple, you should probably go ahead and do what OP is asking for. However, if that's not the case, consider if any of these apply: case 1: ...
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How important is the order of columns in indexes?

...tured or navigated. Have submitted an answer rectifying this stackoverflow.com/a/39080819/73226 – Martin Smith Aug 22 '16 at 16:05 6 ...
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Why should I not include cpp files and instead use a header?

...according to the grading, I lost marks for including cpp files instead of compiling and linking them . I'm not too clear on what that means. ...
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Using async/await for multiple tasks

I'm using an API client that is completely asynchrounous, that is, each operation either returns Task or Task<T> , e.g: ...
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Using StringWriter for XML Serialization

...e.Xml) (Detailed response is below) All of the answers here are over-complicated and unnecessary (regardless of the 121 and 184 up-votes for Christian's and Jon's answers, respectively). They might provide working code, but none of them actually answer the question. The issue is that nobody tr...
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When to use EntityManager.find() vs EntityManager.getReference() with JPA

I have come across a situation (which I think is weird but is possibly quite normal) where I use the EntityManager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table. ...