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Installing PG gem on OS X - failure to build native extension
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Same error for me and I didn't experience it until I downloaded OS X 10.9 (Mavericks). Sigh, another OS upgrade headache.
Here's how I fixed it (with homebrew):
Install another build of Xcode Tools (typing brew update in the terminal will prompt you to update the Xcode build tools)
brew upda...
how do I check in bash whether a file was created more than x time ago?
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140
Only for modification time
if test `find "text.txt" -mmin +120`
then
echo old enough
fi
Y...
Multi-line string with extra space (preserved indentation)
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10 Answers
10
Active
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sudo echo “something” >> /etc/privilegedFile doesn't work
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answered Feb 15 '09 at 12:34
YooYoo
14.5k55 gold badges3535 silver badges4545 bronze badges
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How to avoid 'cannot read property of undefined' errors?
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Update:
If you use JavaScript according to ECMAScript 2020 or later, see optional chaining.
TypeScript has added support for optional chaining in version 3.7.
// use it like this
obj?.a?.lot?.of?.properties
Solution for JavaScript before ECMASCript 2020 or TypeScript older ...
insert vs emplace vs operator[] in c++ map
...e m is std::map<int,int> already has an element with key 5 and value 0
m[5] = 10; // postcondition: m[5] == 10
m.insert(std::make_pair(5,15)); // m[5] is still 10
In the case of insert the argument is an object of value_type, which can be created in different ways. You c...
define() vs. const
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1057
As of PHP 5.3 there are two ways to define constants: Either using the const keyword or using ...
Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...学习,笔记Deep Learning（深度学习）学习笔记整理系列zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学习）学习笔记整理系列
zouxy09@qq.com
http://blog.csdn.net/zouxy09
作者：Zouxy
version 1.0 2013...
Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...学习,笔记Deep Learning（深度学习）学习笔记整理系列zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学习）学习笔记整理系列
zouxy09@qq.com
http://blog.csdn.net/zouxy09
作者：Zouxy
version 1.0 2013...
Deep Learning（深度学习）学习笔记整理系列之（二） - 大数据 & AI - 清泛...
...学习,笔记Deep Learning（深度学习）学习笔记整理系列zouxy09@qq.comhttp: blog.csdn.net zouxy09作者：Zouxyversion 1.0 2013-04-08原文网址：h...Deep Learning（深度学习）学习笔记整理系列
zouxy09@qq.com
http://blog.csdn.net/zouxy09
作者：Zouxy
version 1.0 2013...