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How can we match a^n b^n with Java regex?
...0
xaaab 0
b 0
abbb 1 a|bbb
Note that e.g. aaa|b is the result of join-ing what each group captured with '|'. In this case, group 0 (i.e. what the pattern matched) captured aaa, and group 1 captured b.
Lesson: You can capture inside a lookaround. You can use free-spacing to enhance readability.
Ste...
Is HTML considered a programming language? [closed]
...classify them at all. Just put them in a big pile called "Technologies" or whatever you like. Remember, however, that anything you list is fair game for a question.
HTML is so common that I'd expect almost any technology person to already know it (although not stuff like CSS and so on), so you mig...
Renaming branches remotely in Git
...i
git push $1 $1/$2\:refs/heads/$3 :$2
}
To integrate @ksrb's comment: What this basically does is two pushes in a single command, first git push <remote> <remote>/<old_name>:refs/heads/<new_name> to push a new remote branch based on the old remote tracking branch and the...
Remove all multiple spaces in Javascript and replace with single space [duplicate]
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What's the improvement in using bracket quantifier over a simple +?
– some-non-descript-user
Feb 22 '17 at 9:37
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Sleep in JavaScript - delay between actions
...ile sleeping (like doing progress updates, keeping some internal state, or whatever).
– Anders Sandvig
Feb 10 '10 at 8:28
5
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On logout, clear Activity history stack, preventing “back” button from opening logged-in-only Activi
... LoginActivity on top of the existing stack. Which is almost certainly NOT what you want (weird behavior where the user can 'back' their way out of login into a previous screen).
So if you have previously finish()'d the LoginActivity, you need to pursue some mechanism for clearing your stack and th...
Combining two lists and removing duplicates, without removing duplicates in original list
...first list ignored. .. A bit hard to explain, so let me show an example of what the code looks like, and what i want as a result.
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How do I install cygwin components from the command line?
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Thanks! Just what I wanted to know. I wonder why they aren't mature?
– vy32
Feb 20 '12 at 2:53
4
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How to efficiently count the number of keys/properties of an object in JavaScript?
What's the fastest way to count the number of keys/properties of an object? It it possible to do this without iterating over the object? i.e. without doing
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Creating range in JavaScript - strange syntax
...Array handles multiple arguments
How the Number function handles arguments
What Function.prototype.call does
They're rather advanced topics in javascript, so this will be more-than-rather long. We'll start from the top. Buckle up!
1. Why not just Array(5).map?
What's an array, really? A regular ...