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Overriding == operator. How to compare to null? [duplicate]
There is probably an easy answer to this...but it seems to be eluding me. Here is a simplified example:
9 Answers
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F12 Jump to method -> go back to previous method after making the jump?
I can jump to code if I click in a method name and hit F12. But, is there a keyboard short cut to jump back to the previous code editor location?
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Python circular importing?
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I think the answer by jpmc26, while by no means wrong, comes down too heavily on circular imports. They can work just fine, if you set them up correctly.
The easiest way to do so is to use import my_module syntax, rather than from my_module import some_object. The former will almost always...
Most efficient way to cast List to List
I have a List<SubClass> that I want to treat as a List<BaseClass> . It seems like it shouldn't be a problem since casting a SubClass to a BaseClass is a snap, but my compiler complains that the cast is impossible.
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Java “Virtual Machine” vs. Python “Interpreter” parlance?
It seems rare to read of a Python "virtual machine" while in Java "virtual machine" is used all the time.
13 Answers
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Override Java System.currentTimeMillis for testing time sensitive code
Is there a way, either in code or with JVM arguments, to override the current time, as presented via System.currentTimeMillis , other than manually changing the system clock on the host machine?
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Ruby on Rails Server options [closed]
...onfusing the roles of Apache/Nginx with the roles of other components.
Historic note: This article was originally written on November 6, 2010, when the Ruby app server ecosystem was limited. I've updated this article on March 15 2013 with all the latest updates in the ecosystem.
Disclaimer: I am o...
psql: FATAL: Ident authentication failed for user “postgres”
....conf?
See https://help.ubuntu.com/stable/serverguide/postgresql.html how to do it.
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How to add Web API to an existing ASP.NET MVC 4 Web Application project?
I wish to add an ASP.NET Web API to an ASP.NET MVC 4 Web Application project, developed in Visual Studio 2012. Which steps must I perform to add a functioning Web API to the project? I'm aware that I need a controller deriving from ApiController, but that's about all I know.
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What exactly is a C pointer if not a memory address?
...ut C, the following information is given after discussing the & operator:
25 Answers
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