大约有 42,000 项符合查询结果(耗时:0.0540秒) [XML]

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Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?

... This approach will use the actual boolean type (and resolve to true and false) if the compiler supports it. (specifically, C++) However, it would be better to check whether C++ is in use (via the __cplusplus macro) and actually use true and false. In a C compiler, this i...
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Is multiplication and division using shift operators in C actually faster?

Multiplication and division can be achieved using bit operators, for example 19 Answers ...
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When and why are database joins expensive?

I'm doing some research into databases and I'm looking at some limitations of relational DBs. 7 Answers ...
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How should I choose an authentication library for CodeIgniter? [closed]

I see there are a few . Which ones are maintained and easy to use? What are their pros and cons? 11 Answers ...
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What are the differences between Perl, Python, AWK and sed? [closed]

just want to know what are the main differences among them? and the power of each language (where it's better to use it). 5...
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Undefined behavior and sequence points

... C++98 and C++03 This answer is for the older versions of the C++ standard. The C++11 and C++14 versions of the standard do not formally contain 'sequence points'; operations are 'sequenced before' or 'unsequenced' or 'indetermina...
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Load and execution sequence of a web page?

...ve done some web based projects, but I don't think too much about the load and execution sequence of an ordinary web page. But now I need to know detail. It's hard to find answers from Google or SO, so I created this question. ...
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Duplicate and rename Xcode project & associated folders [closed]

...d like to be able to duplicate an entire Xcode project, rename the project and the associated files without Xcode going mental, and without having to manually re-import all files to the project. ...
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Git vs Team Foundation Server [closed]

I introduced Git to my dev team, and everyone hates it except me. They want to replace it with Team Foundation Server. I feel like this is a huge step backwards, although I am not very familiar with TFS. Can someone with experience compare branching support on TFS to Git branching? Also, in general,...
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Difference between volatile and synchronized in Java

... am wondering at the difference between declaring a variable as volatile and always accessing the variable in a synchronized(this) block in Java? ...