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Sort a list of tuples by 2nd item (integer value) [duplicate]
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You can also add multiple keys as a tuple, if you want one as reversed you can add a negative sign, this will sort using the first element first and then second element: sorted(some_list, lambda x: (x[0], -x[1],))
– Seraf
Mar 10 '19 at 17:34...
How to run travis-ci locally
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Prerequisites
You have public repo on GitHub
You ran at least one build on Travis
You have Docker set up on your computer
Set up the build environment
Reference: https://docs.travis-ci.com/user/common-build-problems/
Make up your own temporary build ID
BUILDID="build-$RANDOM"
Vie...
How to uninstall the “Microsoft Advertising SDK” Visual Studio extension?
One of the extensions listed in Visual Studio (2012 for me) is the "Microsoft Advertising SDK for Windows 8.1". I like to uninstall extensions I don't need, but this one won't allow me. if I hover the (enabled!) button it says in a tooltip:
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What is the largest TCP/IP network port number allowable for IPv4?
What is the highest port number one can use?
8 Answers
8
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Get all directories within directory nodejs
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Thanks to JavaScript ES6 (ES2015) syntax features it's one liner:
Synchronous version
const { readdirSync, statSync } = require('fs')
const { join } = require('path')
const dirs = p => readdirSync(p).filter(f => statSync(join(p, f)).isDirectory())
Asynchronous version ...
What is a good Hash Function?
...For doing "normal" hash table lookups on basically any kind of data - this one by Paul Hsieh is the best I've ever used.
http://www.azillionmonkeys.com/qed/hash.html
If you care about cryptographically secure or anything else more advanced, then YMMV. If you just want a kick ass general purpose h...
How to increment a datetime by one day?
... current answers are wrong in some cases as they do not consider that timezones change their offset relative to UTC. So in some cases adding 24h is different from adding a calendar day.
Proposed solution
The following solution works for Samoa and keeps the local time constant.
def add_day(today):...
How do you get the rendered height of an element?
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One word - awesome! Thanks for everyone's participation. Lots of good info on this thread. This will allow me to center pages using CSS but use jQuery to make the overall height of the "container" div correct without venturi...
When can I use a forward declaration?
... can be inconvenient for the user who would expect the header to be standalone.
– Luc Touraille
Jul 8 '13 at 11:45
8
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Replace one character with another in Bash
...olution is good when dealing with short strings (the common case, I guess) one may prefer tr for long strings. On my system tr outperforms bash starting at strings with more than 1000 characters. It seems like bash's time complexity is worse than linear. A small test: x="$(tr -dc 'a-z \n' </dev/u...