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Printf width specifier to maintain precision of floating-point value

...guous-ness needs 17 as the precision changes in a binary number (at 2,4,8, etc.) and a decimal number (at 10,100,1000, etc.) are never at the same number (except 1.0). Example: the 2 double values just above 0.1 : 1.000_0000_0000_0000_2e-01, 1.000_0000_0000_0000_3e-01 need 17 digits to distinguish....
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Adding git branch on the Bash command prompt

...bash-completion 2- Edit your .bashrc file and check (or add) : if [ -f /etc/bash_completion ]; then . /etc/bash_completion fi 3- ... before your prompt line : export PS1='$(__git_ps1) \w\$ ' (__git_ps1 will show your git branch) 4- do source .bashrc EDIT : Further readings : Don’t Re...
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What is the 'new' keyword in JavaScript?

...ral (functions default to Function.prototype, numbers to Number.prototype, etc.). It can only be read with Object.getPrototypeOf(someObject). There is no other way to set or read this value. Functions, in addition to the hidden [[prototype]] property, also have a property called prototype, and it i...
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How to detect reliably Mac OS X, iOS, Linux, Windows in C preprocessor? [duplicate]

...g for Windows (32-bit only) #endif #elif __APPLE__ #include <TargetConditionals.h> #if TARGET_IPHONE_SIMULATOR // iOS Simulator #elif TARGET_OS_IPHONE // iOS device #elif TARGET_OS_MAC // Other kinds of Mac OS #else # error "Unknown Apple p...
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Using braces with dynamic variable names in PHP

...ves you a not very useful $fixedTime$i instead of $fixedTime1, $fixedTime2 etc. (Fortunately spotted it almost straight away.) – BeNice Jan 27 '16 at 5:13 ...
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内存调试技巧:C 语言最大难点揭秘 - C/C++ - 清泛网 - 专注C/C++及内核技术

...他许多通用语言(如 Java™、Ruby、Haskell、C#、Perl、Smalltalk 等),每种语言都有众多爱好者和各自优点。但是,从计算角度来看,每种编程语言优于 C 或 C++ 主要优点都与便于内存管理密切相关。与内存相关编程是如...
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PyLint “Unable to import” error - how to set PYTHONPATH?

...lint's, though I haven't used that) is: topdir\ __init__.py functions_etc.py subdir\ __init__.py other_functions.py This is how the python interpreter is aware of the module without reference to the current directory, so if pylint is running from its own absolute path it will be abl...
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自动生成Linux下Makefile全攻略(automake原理) - C/C++ - 清泛网 - 专注C/C++及内核技术

...configure 输出Makefile文件 2、make 输出二进制 3、make install 安装二进制到指定目录 make及make install规则都需要参照Makefile文件,而Makefile是自动生成,大家有兴趣可以查看下Makefile,代码很长很复杂。当然我们可以直接在Mak...
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How to import a module given the full path?

...on path can contain zip archives, "eggs" (a complex kind of zip archives), etc. Modules can be imported out of them. So the path elements are indeed containers of files, but they are not necessarily directories. – alexis Apr 30 '15 at 21:21 ...
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Download the Android SDK components for offline install

...ouu will find all the list of xml files where packages are available Fetching https://dl-ssl.google.com/android/repository/addons_list-2.xml Fetched Add-ons List successfully Fetching URL: https://dl-ssl.google.com/android/repository/repository-7.xml Validate XML: https://dl-ssl.google.co...