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What does a just-in-time (JIT) compiler do?

What does a JIT compiler specifically do as opposed to a non-JIT compiler? Can someone give a succinct and easy to understand description? ...
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@RunWith(MockitoJUnitRunner.class) vs MockitoAnnotations.initMocks(this)

... use of the framework because // Mockito is still waiting to find out what it should do when myMethod is called. // But Mockito can't report it yet, because the call to thenReturn might // be yet to happen. when(myMock.method1()); doSomeTestingStuff(); // ERROR 1 is repor...
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How to calculate UILabel width based on text length?

...elSize lineBreakMode:yourLabel.lineBreakMode]; What is -[NSString sizeWithFont:forWidth:lineBreakMode:] good for? this question might have your answer, it worked for me. For 2014, I edited in this new version, based on the ultra-handy comment by Norbert below! This do...
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Is it possible to change only the alpha of a rgba background colour on hover?

...y a CSS pre-processor, though, if you want to do this sort of thing. From what I could see, at least LESS and Sass have functions that can make colors more, or less, transparent. share | improve th...
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What is the difference between double-ampersand (&&) and semicolon (;) in Linux Bash?

What is the difference between ampersand and semicolon in Linux Bash ? 3 Answers 3 ...
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Drop all duplicate rows across multiple columns in Python Pandas

... What if my columns are not explicitly labelled? How do I select the columns just based on their index? – Hamman Samuel Feb 9 '17 at 21:42 ...
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git pull from master into the development branch

...ges into my development branch. is there a better way to do this? here is what I had planned on doing, after committing changes: ...
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Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant f

...t even using Interface Builder, and I'm still getting this error. Any idea what's going on? – sudo Mar 9 '14 at 7:18 12 ...
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How to check for the type of a template parameter?

...are A LOT of code so I can not really duplicate it – WhatABeautifulWorld Nov 29 '12 at 23:27 3 @W...
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Clone private git repo with dockerfile

I have copied this code from what seems to be various working dockerfiles around, here is mine: 7 Answers ...