大约有 22,000 项符合查询结果(耗时:0.0158秒) [XML]

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What is the strict aliasing rule?

...nts of buff could change at anytime from anywhere by anybody. So to get an extra performance edge, and assuming most people don't type-pun pointers, the strict aliasing rule was introduced. Keep in mind, if you think the example is contrived, this might even happen if you're passing a buffer to anot...
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Get path of executable

...dlib> #include <algorithm> #include <iterator> #include <string> #include <vector> #include <boost/filesystem/operations.hpp> #include <boost/filesystem/path.hpp> #include <boost/predef.h> #include <boost/version.hpp> #include <boost/tokenizer.h...
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std::wstring VS std::string

I am not able to understand the differences between std::string and std::wstring . I know wstring supports wide characters such as Unicode characters. I have got the following questions: ...
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C: differences between char pointer and array [duplicate]

... (in this one, "now is the time" is stored elsewhere in memory, commonly a string table). Also, note that because the data belonging to the second definition (the explicit pointer) is not stored in the current scope's stack space, it is unspecified exactly where it will be stored and should not be ...
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How do I create an array of strings in C?

I am trying to create an array of strings in C. If I use this code: 14 Answers 14 ...
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Fastest way to flatten / un-flatten nested JSON objects

...d more speed out of your implementation by replacing the regex.exec() with string.split() and simplifying the key format. I'll give it a few days before I award you the pts, but I think the 'wall of meaningful optimization' has been reached. – Louis Ricci Oct 5...
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IEnumerable to string [duplicate]

...can't find a really easy way to convert an IEnumerable<char> to a string . 6 Answers ...
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Replacing a char at a given index in string? [duplicate]

String does not have ReplaceAt() , and I'm tumbling a bit on how to make a decent function that does what I need. I suppose the CPU cost is high, but the string sizes are small so it's all ok ...
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Best way to check for “empty or null value”

What is best way to check if value is null or empty string in Postgres sql statements? 10 Answers ...
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how to convert a string to date in mysql?

I have a string column which acts as a date and I want to select it as a date . 5 Answers ...