大约有 43,000 项符合查询结果(耗时:0.0701秒) [XML]

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How can I find WPF controls by name or type?

I need to search a WPF control hierarchy for controls that match a given name or type. How can I do this? 18 Answers ...
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Execution time of C program

I have a C program that aims to be run in parallel on several processors. I need to be able to record the execution time (which could be anywhere from 1 second to several minutes). I have searched for answers, but they all seem to suggest using the clock() function, which then involves calculating...
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What are enums and why are they useful?

Today I was browsing through some questions on this site and I found a mention of an enum being used in singleton pattern about purported thread safety benefits to such solution. ...
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Hash function that produces short hashes?

Is there a way of encryption that can take a string of any length and produce a sub-10-character hash? I want to produce reasonably unique ID's but based on message contents, rather than randomly. ...
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How to cancel/abort jQuery AJAX request?

I've an AJAX request which will be made every 5 seconds. But the problem is before the AJAX request if the previous request is not completed I've to abort that request and make a new request. ...
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What does 'const static' mean in C and C++?

I saw this in some code here on StackOverflow and I couldn't figure out what it does. Then I saw some confused answers on other forums. My best guess is that it's used in C to hide the constant foo from other modules. Is this correct? If so, why would anyone use it in a C++ context where you can j...
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Error “initializer element is not constant” when trying to initialize variable with const

I get an error on line 6 (initialize my_foo to foo_init) of the following program and I'm not sure I understand why. 5 Answ...
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What's the difference between an argument and a parameter?

When verbally talking about methods, I'm never sure whether to use the word argument or parameter or something else. Either way the other people know what I mean, but what's correct, and what's the history of the terms? ...
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Replace multiple whitespaces with single whitespace in JavaScript string

I have strings with extra whitespaces, each time there's more than only one whitespace I'd like it be only one. 11 Answers ...
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Check if a row exists, otherwise insert

I need to write a T-SQL stored procedure that updates a row in a table. If the row doesn't exist, insert it. All this steps wrapped by a transaction. ...