大约有 40,700 项符合查询结果(耗时:0.0572秒) [XML]

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What is the difference between NULL, '\0' and 0?

... Note: This answer applies to the C language, not C++. Null Pointers The integer constant literal 0 has different meanings depending upon the context in which it's used. In all cases, it is still an integer constant with the value...
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Why is “if not someobj:” better than “if someobj == None:” in Python?

I've seen several examples of code like this: 9 Answers 9 ...
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Is PHP compiled or interpreted?

Is PHP compiled or interpreted? 9 Answers 9 ...
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What is an NP-complete in computer science?

What is an NP-complete problem? Why is it such an important topic in computer science? 15 Answers ...
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Can someone explain the “debounce” function in Javascript

...uestion was altered slightly from the code in the link. In the link, there is a check for (immediate && !timeout) BEFORE creating a new timout. Having it after causes immediate mode to never fire. I have updated my answer to annotate the working version from the link. function debounce(...
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How does the static modifier affect this code?

Here is my code: 9 Answers 9 ...
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What is a loop invariant?

...orithm" by CLRS. In chapter 2, the authors mention "loop invariants". What is a loop invariant? 15 Answers ...
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What is a callback function?

What is a callback function? 21 Answers 21 ...
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What and where are the stack and heap?

...laining what these two things are. I haven't read a clear explanation of this. I understand what a stack is. But, 29 An...
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String comparison in Python: is vs. == [duplicate]

...nd traced it to an infinite loop, where the loop condition was while line is not '' . Running through it in the debugger, it turned out that line was in fact '' . When I changed it to !='' rather than is not '' , it worked fine. ...