大约有 47,000 项符合查询结果(耗时:0.0692秒) [XML]

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Threads vs Processes in Linux

...ter to use processes instead of threads, since Linux is very efficient in handling processes, and because there are so many problems (such as locking) associated with threads. However, I am suspicious, because it seems like threads could give a pretty big performance gain in some situations. ...
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How can I add a custom HTTP header to ajax request with js or jQuery?

...e of is that with ajaxSetup you can only define one set of default headers and you can only define one beforeSend. If you call ajaxSetup multiple times, only the last set of headers will be sent and only the last before-send callback will execute. ...
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Is there a valid reason for enforcing a maximum width of 80 characters in a code file, this day and

... column rule: To avoid wrapping when copying code into email, web pages, and books. To view multiple source windows side-by-side or using a side-by-side diff viewer. To improve readability. Narrow code can be read quickly without having to scan your eyes from side to side. I think the last point...
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UIScrollView Scrollable Content Size Ambiguity

...le with AutoLayout in Interface Builder (Xcode 5 / iOS 7). It's very basic and important so I think everyone should know how this properly works. If this is a bug in Xcode, it is a critical one! ...
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How efficient is locking an unlocked mutex? What is the cost of a mutex?

...bunch of mutexes or a single one for an object. If you have many threads and the access to the object happens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking. How efficient is it to lock a mutex? I.e....
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Const before or const after?

... why is there two correct ways of specifying const data and in what situation would you prefer or need one over the other if any? Essentially, the reason that the position of const within specifiers prior to an asterisk does not matter is that the C grammar was defined that way ...
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What's the difference between emulation and simulation? [duplicate]

In simple understandable terms, what is the difference between the two terms? 10 Answers ...
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How can I pass arguments to a batch file?

I need to pass an ID and a password to a batch file at the time of running rather than hardcoding them into the file. 17 An...
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urlencode vs rawurlencode?

...RL using a variable I have two choices to encode the string. urlencode() and rawurlencode() . 11 Answers ...
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Adding two Java 8 streams, or an extra element to a stream

... If you add static imports for Stream.concat and Stream.of, the first example could be written as follows: Stream<Foo> stream = concat(stream1, concat(stream2, of(element))); Importing static methods with generic names can result in code that becomes difficult ...