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Error while installing json gem 'mkmf.rb can't find header files for ruby'
...is no ruby development environment installed. Development env is needed to compile ruby extensions, which are mostly written in C. Proxy has nothing to do with the problem: everything is downloaded fine, just compilation fails.
I would suggest you to install ruby-dev (ruby-devel for rpm-based distr...
How do I do a not equal in Django queryset filtering?
In Django model QuerySets, I see that there is a __gt and __lt for comparitive values, but is there a __ne / != / <> ( not equals ?)
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What is /dev/null 2>&1?
... @Nobody check my answer below for your question stackoverflow.com/questions/10508843/what-is-dev-null-21/…
– Vishrant
Feb 5 '18 at 22:50
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编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的Compiler-Internals-How-Try-Catch-Throw-are-Interprpreted-by-the-Microsoft-Compiler编译器 解析 Try Catch Throw本文不是一篇介绍如何在x86架构上详细地实现异常处理(exception handling)的手册，只是...
Signed versus Unsigned Integers
...ualise is to use the leftmost bit as a flag (sign and magnitude), but more common is two's complement. Both are in use in most modern microprocessors — floating point uses sign and magnitude, while integer arithmetic uses two's complement.
signed integers can hold both positive and negative n...
How to find patterns across multiple lines using grep?
...make things easier, but grep will work too. For example, see stackoverflow.com/a/7167115/123695
– Michael Mior
Apr 28 '14 at 18:56
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Simplest way to wait some asynchronous tasks complete, in Javascript?
...synchronously or asynchronously. See this: en.wikipedia.org/wiki/Callback_(computer_programming)
– freakish
Jun 6 '17 at 20:17
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编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的Compiler-Internals-How-Try-Catch-Throw-are-Interprpreted-by-the-Microsoft-Compiler编译器 解析 Try Catch Throw本文不是一篇介绍如何在x86架构上详细地实现异常处理(exception handling)的手册，只是...
编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的Compiler-Internals-How-Try-Catch-Throw-are-Interprpreted-by-the-Microsoft-Compiler编译器 解析 Try Catch Throw本文不是一篇介绍如何在x86架构上详细地实现异常处理(exception handling)的手册，只是...