大约有 40,000 项符合查询结果(耗时:0.0491秒) [XML]

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How to list imported modules?

How to enumerate all imported modules? 9 Answers 9 ...
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ssh: connect to host github.com port 22: Connection timed out

...o git successfully for quite a while. Now I am not able to push into git all of a sudden. I have set the RSA key and the proxy and double checked them, with no avail and git is throwing me the error shown in the title of the page. ...
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Unsupported major.minor version 52.0 [duplicate]

... "J2SE" was only used till Java 1.5 and is nowadays called "Java SE", see en.wikipedia.org/wiki/Java_Platform,_Standard_Edition – Tim Büthe Sep 6 '16 at 14:38 ...
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How do I expire a PHP session after 30 minutes?

...ms with filesystems where atime tracking is not available. So it additionally might occur that a session data file is deleted while the session itself is still considered as valid because the session data was not updated recently. And second: session.cookie_lifetime session.cookie_lifetime ...
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NullPointerException in Java with no StackTrace

...a NullPointerException , but when I try to log the StackTrace (which basically ends up calling Throwable.printStackTrace() ), all I get is: ...
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Search for all files in project containing the text 'querystring' in Eclipse

...rk in Dreamweaver and Eclipse when developing. I think Dreamweaver has a really nice search where you can search for text within all files of your current project. ...
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Which is faster: Stack allocation or Heap allocation

... Stack allocation is much faster since all it really does is move the stack pointer. Using memory pools, you can get comparable performance out of heap allocation, but that comes with a slight added complexity and its own headaches...
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OS detecting makefile

... still use solely uname, but you have to deal with if/else blocks to check all MinGW, Cygwin, etc. variations. The environment variable OS is always set to "Windows_NT" on different Windows versions (see %OS% environment variable on Wikipedia). An alternative of OS is the environment variable MSVC (...
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What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?

... platforms, memory leaks are often caused by unreleased pointers. Traditionally, it has always been of utmost importance to check your allocs, copies and retains to make sure each has a corresponding release message. ...
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What does O(log n) mean exactly?

...g that the size of the input affects the growth of the algorithm proportionally...and the same goes for, for example, quadratic time O(n2) etc..even algorithms, such as permutation generators, with O(n!) times, that grow by factorials. ...