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What's the difference between ES6 Map and WeakMap?

Looking this and this MDN pages it seems like the only difference between Maps and WeakMaps is a missing "size" property for WeakMaps. But is this true? What's the difference between them? ...
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Attempt to present UIViewController on UIViewController whose view is not in the window hierarchy

Just started using Xcode 4.5 and I got this error in the console: 33 Answers 33 ...
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C++ Convert string (or char*) to wstring (or wchar_t*)

... string of your interest, then your problem can be fully solved with the standard library (C++11 and newer) alone. The TL;DR version: #include <locale> #include <codecvt> #include <string> std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter; std::string ...
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What's the point of having pointers in Go?

...ences (with appropriate const or mutable qualifiers). Now we have pointers and for some built-in types like maps and channels implicit pass by reference. ...
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Looking for a 'cmake clean' command to clear up CMake output

...nually going through directories removing files like cmake_install.cmake and CMakeCache.txt , and the CMakeFiles folders. ...
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Does Go provide REPL?

... for a programmer. However, it seems Go does not provide it. Is my understanding correct? 12 Answers ...
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How do I split a multi-line string into multiple lines?

... @lpapp, I totally agree. splitlines() is semantically (and functionally, since it uses universal newlines and omits a trailing empty line) better than split('\n'). Back then (2008) I was just a newbie Pythonista and grepping though my scripts now shows that I too am using splitli...
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What is the difference between a string and a byte string?

I am working with a library which returns a byte string and I need to convert this to a string. 7 Answers ...
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Format decimal for percentage values?

... Looking at here big difference is like US and France type. If above varies by culture, is there a culture-independent P formatting? – bonCodigo May 18 '14 at 1:36 ...
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Spring @PostConstruct vs. init-method attribute

Is there any difference between using the @PostConstruct annotation and declaring the same method as init-method in Spring XML configuration? ...