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Using ls to list directories and their total sizes
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To list the largest directories from the current directory in human readable format:
du -sh * | sort -hr
A better way to restrict number of rows can be
du -sh * | sort -hr | head -n10
Where you can increase the suffix of -n flag to restrict the numb...
Find first element in a sequence that matches a predicate
...ed out.
For Python version < 2.6, here's the best I can come up with:
from itertools import repeat,ifilter,chain
chain(ifilter(predicate,seq),repeat(None)).next()
Alternatively if you needed a list later (list handles the StopIteration), or you needed more than just the first but still not al...
Ideal way to cancel an executing AsyncTask
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From docs about onCancelled(): "Runs on the UI thread after cancel(boolean) is invoked and doInBackground(Object[]) has finished." This 'after' means that setting a flag in onCancelled and checking in doInBackground makes no ...
Regular Expression to reformat a US phone number in Javascript
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This answer borrows from maerics' answer. It differs primarily in that it accepts partially entered phone numbers and formats the parts that have been entered.
phone = value.replace(/\D/g, '');
const match = phone.match(/^(\d{1,3})(\d{0,3})(\d{...
Easy way to test a URL for 404 in PHP?
...ser has contributed the following:
/**
This is a modified version of code from "stuart at sixletterwords dot com", at 14-Sep-2005 04:52. This version tries to emulate get_headers() function at PHP4. I think it works fairly well, and is simple. It is not the best emulation available, but it works.
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How can I break up this long line in Python?
...joining is that it only works with string literals, not with strings taken from
variables, so things can get a little more hairy when you refactor. Also, you can only interpolate formatting on the combined string as a whole.
Alternatively, you can join explicitly using the concatenation operator (...
How to exit pdb and allow program to continue?
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embarassing, but this saved me from being stuck for too long -_-
– jmcg
Oct 25 '19 at 6:52
add a comment
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Process escape sequences in a string in Python
Sometimes when I get input from a file or the user, I get a string with escape sequences in it. I would like to process the escape sequences in the same way that Python processes escape sequences in string literals .
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How do I make python wait for a pressed key?
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Using six for Py2 & Py3 compatible code: from six.moves import input; input("Press Enter to continue...")
– rcoup
Nov 29 '18 at 12:45
add a c...
Create Generic method constraining T to an Enum
...e, a better implementation should be something like this:
public T GetEnumFromString<T>(string value) where T : struct, IConvertible
{
if (!typeof(T).IsEnum)
{
throw new ArgumentException("T must be an enumerated type");
}
//...
}
This will still permit passing of value ...