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Checking from shell script if a directory contains files
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Three best tricks
shopt -s nullglob dotglob; f=your/dir/*; ((${#f}))
This trick is 100% bash and invokes (spawns) a sub-shell. The idea is from Bruno De Fraine and improved by teambob's comment.
files=$(shopt -s nullglob dotg...
How to grant permission to users for a directory using command line in Windows?
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"Run as Admin" is needed, simply the best answer!
– Jeb50
Dec 5 '19 at 23:48
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Rails 3: “field-with-errors” wrapper changes the page appearance. How to avoid this?
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This is a hack at best because it negates whatever display: property being used (and other layout styles) on the html_tag.
– Ryan
May 4 '12 at 21:34
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How to access and test an internal (non-exports) function in a node.js module?
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That's pretty nasty. This can't be the best way to solve this problem.
– npiv
Oct 23 '14 at 20:45
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How do I delete unpushed git commits?
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I wonder why the best answer that I've found is only in the comments! (by Daenyth with 86 up votes)
git reset --hard origin
This command will sync the local repository with the remote repository getting rid of every change you have made on...
Disable HttpClient logging
...e are a number of choices, but probably log4j or java.util.logging are the best options for you.
Set-up the commons-logging properties file to point to the correct Log implementation. e.g. to use log4j, put this into the properties file: org.apache.commons.logging.Log=org.apache.commons.logging.impl...
nonlocal keyword in Python 2.x
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For Python I think it is best to use the verb "bind" or "rebind" and to use the noun "name" rather than "variable". In Python 2.x, you can close over an object but you can't rebind the name in the original scope. In a language like C, declaring a v...
Artificially create a connection timeout error
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The following URL always gives a timeout, and combines the best of @Alexander and @Emu's answers above:
http://example.com:81
Using example.com:81 is an improvement on Alexander's answer because example.com is reserved by the DNS standard, so it will always be unreachable, unlike g...
How to install pip with Python 3?
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Good news! Python 3.4 (released March 2014) ships with Pip. This is the best feature of any Python release. It makes the community's wealth of libraries accessible to everyone. Newbies are no longer excluded by the prohibitive difficulty of setup. In shipping with a package manager, Python joins ...
Format a number as 2.5K if a thousand or more, otherwise 900
...e code, or the performance. A straight forward approach seems to offer the best design.
Formatting Cash value with K
const formatCash = n => {
if (n < 1e3) return n;
if (n >= 1e3) return +(n / 1e3).toFixed(1) + "K";
};
console.log(formatCash(2500));
Formatting Cash value with...