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Why {} + {} is NaN only on the client side? Why not in Node.js?

...le._commandLineAPI = new CommandLineAPI(this._commandLineAPIImpl, isEvalOnCallFrame ? object : null); expression = "with ((window && window.console && window.console._commandLineAPI) || {}) {\n" + expression + "\n}"; } var result = evalFunction.call(object, expression...
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How to use a custom comparison function in Python 3?

...e a workaround, but I think I am going to lose some performance by passing all the comparison operators < > = to middle man, since my original custom sort is written in C , it had around 1/2x speed of default sort. – YOU Mar 28 '10 at 5:26 ...
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What is the most efficient way to loop through dataframes with pandas? [duplicate]

...Note that iterrows is very slow (it converts every row to a series, potentially messing with your data types). When you need an iterator, better to use itertuples – joris Jul 29 '15 at 15:46 ...
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Is there a performance difference between i++ and ++i in C++?

... However, if i is an instance of a C++ class, then i++ and ++i are making calls to one of the operator++ functions. Here's a standard pair of these functions: Foo& Foo::operator++() // called for ++i { this->data += 1; return *this; } Foo Foo::operator++(int ignored_dummy_value) ...
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Get img thumbnails from Vimeo?

...videos> <video> [skipped] <thumbnail_small>http://ts.vimeo.com.s3.amazonaws.com/235/662/23566238_100.jpg</thumbnail_small> <thumbnail_medium>http://ts.vimeo.com.s3.amazonaws.com/235/662/23566238_200.jpg</thumbnail_medium> &lt...
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Get the name of the currently executing method

... Even better than my first answer you can use __method__: class Foo def test_method __method__ end end This returns a symbol – for example, :test_method. To return the method name as a string, call __method__.to_s instead. Note: This requires Ruby 1.8.7. ...
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OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...件中加入对应的SDK版本: 1 QMAKE_MAC_SDK = macosx10.9 3、:-1: error: [ui_mainwindow.h] Trace/BPT trap: 5 dyld: Library not loaded: /work/build/______________________________PADDING______________________________/lib/QtCore.framework/Versio...
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jQuery selector regular expressions

... James Padolsey created a wonderful filter that allows regex to be used for selection. Say you have the following div: <div class="asdf"> Padolsey's :regex filter can select it like so: $("div:regex(class, .*sd.*)") Also, check the official documentation on se...
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How to get folder path for ClickOnce application

...c:\Documents & Settings That's right. ClickOnce applications are installed under the profile of the user who installed them. Did you take the path that retrieving the info from the executing assembly gave you, and go check it out? On windows Vista and Windows 7, you will find the ClickOnce c...
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Clang vs GCC for my Linux Development project

...inux-gnu/4.3.4/include/g++-v4/ostream:112: note: candidates are: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>& (*)(std::basic_ostream<_CharT, _Traits>&)) [with _CharT = char, _Traits...