大约有 40,000 项符合查询结果(耗时:0.0448秒) [XML]

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Are PDO prepared statements sufficient to prevent SQL injection?

...ck would still succeed. The bug was fixed in MySQL 4.1.20, 5.0.22 and 5.1.11. But the worst part is that PDO didn't expose the C API for mysql_set_charset() until 5.3.6, so in prior versions it cannot prevent this attack for every possible command! It's now exposed as a DSN parameter, which shoul...
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What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)

...n investigation to the question of how implementations behave regarding growing arrays: If they implement them the "usual" way, one would see many quick pushes with rare, interspersed slow pushes at which point the implementation copies the internal representation of the array from one buffer to a l...
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How do I base64 encode (decode) in C?

... | edited Jan 10 '14 at 11:13 user2859193 43433 silver badges1010 bronze badges answered Jul 21 '11 at...
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Mutex example / tutorial? [closed]

...le concurrently, we have potential for a race condition. Consider the following code //somewhere long ago, we have i declared as int void my_concurrently_called_function() { i++; } The internals of this function look so simple. It's only one statement. However, a typical pseudo-assembly languag...
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What are the big differences between TFVC (TFS Version Control) and Git for source control when usin

...stupid decisions on a git repository. A very cool add-on for Git users on Windows is PoSHGit. it provides command autocompletion on the Powershell commandline. Have you experienced in the VS 2013 GUI for Git? Is that enough to support basic branching/merging without the command line interface? ...
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What is the real overhead of try/catch in C#?

... | edited Sep 11 '08 at 20:34 answered Sep 9 '08 at 16:48 ...
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Should I use tag for icons instead of ? [closed]

...t day to learn twitter's bootstrap and it feels bad that they are not following best practices. – Jashwant Jun 21 '12 at 9:35 25 ...
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How do you convert a byte array to a hexadecimal string, and vice versa?

... faster than {IEnumerable}.Aggregate, for instance, but BitConverter still wins. Update (2012-04-03) Added Mykroft's SoapHexBinary answer to analysis, which took over third place. Update (2013-01-15) Added CodesInChaos's byte manipulation answer, which took over first place (by a large margin on...
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What's the fastest way to merge/join data.frames in R?

... issue? For example I'm guessing that SEM=Scanning electron microscope? Knowing more about the application makes it more interesting to us and helps us prioritise. – Matt Dowle Aug 12 '14 at 12:00 ...
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C++ performance challenge: integer to std::string conversion

...--- 10.230 s ergosys: 101.42 MB/sec --- 9.860 s MSVC 2010 64-bit /Ox on Windows 7 64-bit, Core i5 hopman_fun: 127 MB/sec --- 7.874 s hopman_fast: 259 MB/sec --- 3.861 s voigt: 221.435 MB/sec --- 4.516 s user_voigt_timo: 195.695 MB/sec --- 5.110 s timo: 253.165 MB/sec --- 3.950 s user: 212....