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What is more efficient? Using pow to square or just multiply it with itself?

... elapsed << " "; \ \ return x; \ } TEST(1, b) TEST(2, b*b) TEST(3, b*b*b) TEST(4, b*b*b*b) TEST(5, b*b*b*b*b) template <int exponent> double testpow(double base, long loops) { double x = 0.0; boost::posix_time::ptime startTime = now(); for (long i=0; i<loops; ++i) ...
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Does ruby have real multithreading?

...The mainstream JVMs from Sun/Oracle use exclusively OS threads since JDK 1.3) XRuby also implements Ruby Threads as JVM Threads. Update: XRuby is dead. IronRuby implements Ruby Threads as Native Threads, where "Native Threads" in case of the CLR obviously means "CLR Threads". IronRuby imposes no a...
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Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?

... | edited Jun 26 '13 at 13:37 answered Jun 26 '13 at 13:26 ...
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Why doesn't Java support unsigned ints?

... | edited Oct 6 '13 at 17:40 Erik Kaplun 31.6k1111 gold badges8888 silver badges9696 bronze badges ...
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How do I run Visual Studio as an administrator by default?

...| edited Jul 21 '19 at 22:33 Peter Mortensen 26.5k2121 gold badges9292 silver badges122122 bronze badges ...
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Android Studio - How to Change Android SDK Path

... | edited Jul 30 '15 at 11:28 answered May 16 '13 at 8:43 ...
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How do I run multiple background commands in bash in a single line?

... 335 Exactly how do you want them to run? If you want them to be started in the background and run ...
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ssl证书申请报错:challenge = [c for c in authorization[\'challenges\']...

ssl证书申请报错:challenge = [c for c in authorization['challenges'] if c['type'] == "http-01"][0] IndexError: list index out of rangechallenge-list-index-out-of-range使用acme-tiny申请ssl证书时报错:challenge = [c for c in authorization[& 39;challenges& 39;] if c[& 39;type& 39;] == ...
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Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术

Linux C/C++进程单实例互斥代码分享linux-process-singleton分享一段LinuxC C++程序只能启动一份实例的实现代码,原理是通过文件锁互斥实现,最重要的是考虑了不同用户运行同一程序互斥的场景,已经过充分的测试,可直接用于实际项...
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How to write inline if statement for print?

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