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What is a non-capturing group in regular expressions?
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It makes the group non-capturing, which means that the substring matched by that group will not be included in the list of captures. An example in ruby to illustrate the difference:
"abc".match(/(.)(.)./).captures #=> ["a","b"]
"abc".match(/(?:.)(.)./).captures #=> ["b"]
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Bypass confirmation prompt for pip uninstall
...-E '^django-' | xargs pip -q uninstall because the yeses would get gobbled by the pip freeze not the xargs argument/command, pip uninstall.
– hobs
May 25 '13 at 0:10
3
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How can I conditionally require form inputs with AngularJS?
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This feature is documented by now: docs.angularjs.org/api/ng/directive/ngRequired
– bjunix
May 9 '16 at 11:42
add a comment
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How do I get the different parts of a Flask request's url?
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If you are using Python, I would suggest by exploring the request object:
dir(request)
Since the object support the method dict:
request.__dict__
It can be printed or saved. I use it to log 404 codes in Flask:
@app.errorhandler(404)
def not_found(e):
with o...
Alter Table Add Column Syntax
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
Decreasing height of bootstrap 3.0 navbar
... check my answer on this page... the min-height for .navbar is set to 50px by default, so if you set the height to 28px it will be overridden by the 50px min-height...
– patrick
Nov 2 '13 at 0:04
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Vim: How to insert in visual block mode?
How can you insert when you are in visual block mode (by pressing ctrl-V) in Vim?
4 Answers
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Remove trailing newline from the elements of a string list
...oo. Although I can't really imagine what it is you're trying to accomplish by putting them in the same result list...
– Karl Knechtel
Nov 2 '11 at 17:56
4
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Knight's Shortest Path on Chessboard
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What do you mean by unavailable move? A knight can reach any square right!?
– everlasto
Jan 21 '17 at 16:42
add a com...
Browse orphaned commits in Git
...-all anymore, git reflog will be enough.
See commit 71abeb7 (03 Jun 2016) by SZEDER Gábor (szeder).
(Merged by Junio C Hamano -- gitster -- in commit 7949837, 06 Jul 2016)
reflog: continue walking the reflog past root commits
If a repository contains more than one root commit, then its ...