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Python extract pattern matches
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Kind of late, but both yes and no. group(0) returns the matched text, not the first capture group. The code comment is correct, while you seem to be confusing capture groups and matches. group(1) returns the first capture group.
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Only mkdir if it does not exist [duplicate]
...conditions in concurrent execution. So, depending on what your script does and in which environment it lives the first option given is this answer should be preferred. Also, you could just mkdir product 2>/dev/null and not care.
– user1129682
Sep 4 '13 at 20...
Why are regular expressions so controversial? [closed]
... expressions because they're slow, but rather because they're hard to read and write, as well as tricky to get right. While there are some situations where regular expressions provide an effective, compact solution to the problem, they are sometimes shoehorned into situations where it's better to us...
Does Internet Explorer 8 support HTML 5?
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IE8 beta 2 supports two APIs from HTML5: cross-document messaging and non-SQL storage.
IE8 beta 2 doesn’t implement the HTML5 parsing algorithm or the new elements (no <canvas> or <video> support).
There are also bug fixes that align IE8 better with HTML5.
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How do you clear a slice in Go?
...- memory not used, but potentially reachable (after re-slicing of 'slice') and thus not garbage "collectable".
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How does the Java 'for each' loop work?
...or any object that implements the Iterable interface.
Also, if the right-hand side of the for (:) idiom is an array rather than an Iterable object, the internal code uses an int index counter and checks against array.length instead. See the Java Language Specification.
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Given an array of numbers, return array of products of all other numbers (no division)
I was asked this question in a job interview, and I'd like to know how others would solve it. I'm most comfortable with Java, but solutions in other languages are welcome.
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What do ellipsis […] mean in a list?
...inside itself, which can not be printed. p contains p which contains p ... and so on. The [...] notation is a way to let you know this, and to inform that it can't be represented! Take a look at @6502's answer to see a nice picture showing what's happening.
Now, regarding the three new items after ...
How to set java_home on Windows 7?
I went to the Environment Variables in 'System' in the control panel and made two new variables, one for user variables and one for system variables. Both were named JAVA_HOME and both pointing to
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Contain form within a bootstrap popover?
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I would put my form into the markup and not into some data tag.
This is how it could work:
JS Code:
$('#popover').popover({
html : true,
title: function() {
return $("#popover-head").html();
},
content: function() {
return $("#pop...