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How can we match a^n b^n with Java regex?
...-referencing group is to make the self-reference matching optional.
Step 4½: Understanding what went wrong
The problem is that since we made the self-reference matching optional, the "counter" can "reset" back to 0 when there aren't enough b's. Let's closely examine what happens at every iteration...
Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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How do you disable viewport zooming on Mobile Safari?
...he long tail here but it might be worth pointing out that this needs to be applied at the "top level" page. If you have this meta tag applied to an iframe, it won't work unless the meta tag is also applied to the top-most page.
– founddrama
Feb 11 '13 at 14:43
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Get a random item from a JavaScript array [duplicate]
...tion if you want: npmjs.com/package/lodash.sample
– XåpplI'-I0llwlg'I -
Dec 4 '15 at 11:32
4
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Identify if a string is a number
... @CFP +1...RegEx are always better than usual functions, when applicable!
– MAXE
Jun 27 '12 at 15:32
19
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How do you unit test a Celery task?
...your test:
from nose.tools import eq_
def test_add_task():
rst = add.apply(args=(4, 4)).get()
eq_(rst, 8)
Hope that helps!
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Move all files except one
... empties the whole Old -directory. What is wrong?
– Léo Léopold Hertz 준영
Mar 22 '09 at 3:28
5
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Capitalize words in string [duplicate]
... This doesn't seem to work for nordic characters ä, ö, and å. For example päijät-häme becomes PäIjäT-HäMe
– Markus Meskanen
Dec 15 '16 at 12:18
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GitHub “fatal: remote origin already exists”
...existing remote:
$ git remote set-url origin git@github.com:ppreyer/first_app.git
Long version:
As the error message indicates, there is already a remote configured with the same name. So you can either add the new remote with a different name or update the existing one if you don't need it:
To...
Deploying my application at the root in Tomcat
I have the war file of my application. I need to deploy this at the root level. The current URL is http://localhost:8080/war_name/application_name .
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