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How do I check if a variable exists in a list in BASH
...iginal string with a space and check against a regex with [[ ]]
haystack='foo bar'
needle='bar'
if [[ " $haystack " =~ .*\ $needle\ .* ]]; then
...
fi
this will not be false positive on values with values containing the needle as a substring, e.g. with a haystack foo barbaz.
(The concept is...
jQuery get value of select onChange
...then FireFox (22.0) does not trigger the change event. You need to additionally bind keypress for FireFox. Additional Info: jQuery 1.10.2 using the syntax $('select').on('change', function(){ /* do seomthing */ });
– MonkeyZeus
Jul 31 '13 at 13:57
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Sort a list of tuples by 2nd item (integer value) [duplicate]
... optimization, see jamylak's response using itemgetter(1), which is essentially a faster version of lambda x: x[1].
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How do I find the next commit in git? (child/children of ref)
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To list all the commits, starting from the current one, and then its child, and so on - basically standard git log, but going the other way in time, use something like
git log --reverse --ancestry-path 894e8b4e93d8f3^..master
wher...
Get list of data-* attributes using javascript / jQuery
...
Actually, if you're working with jQuery, as of version 1.4.3 1.4.4 (because of the bug as mentioned in the comments below), data-* attributes are supported through .data():
As of jQuery 1.4.3 HTML 5 data-
attributes will b...
What's the difference between String(value) vs value.toString()
...the object passed, for example:
var o = { toString: function () { return "foo"; } };
String(o); // "foo"
On the other hand, if an identifier refers to null or undefined, you can't use the toString method, it will give you a TypeError exception:
var value = null;
String(null); // "null"
value...
Ignore mapping one property with Automapper
...mapper and I have the following scenario:
Class OrderModel has a property called 'ProductName' that isn't in the database.
So when I try to do the mapping with:
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Can I change the height of an image in CSS :before/:after pseudo-elements?
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If that's the case, you shouldn't be using :after at all. It's not supported below IE8.
– Ansel Santosa
Jan 23 '12 at 21:08
25
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How to pad zeroes to a string?
...ited in the parens; since only one thing is being printed, it works identically now on Py2 and Py3.
– ShadowRanger
Jan 25 '19 at 2:19
2
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Why can I use a function before it's defined in JavaScript?
...rn true; };
it would stop working.
The function declaration is syntactically quite separate from the function expression, even though they look almost identical and can be ambiguous in some cases.
This is documented in the ECMAScript standard, section 10.1.3. Unfortunately ECMA-262 is not a very...