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Regex lookahead, lookbehind and atomic groups
...nds the 2nd bar ("bar" which does not have "foo" before it)
You can also combine them:
(?<=foo)bar(?=bar) finds the 1st bar ("bar" with "foo" before it and "bar" after it)
Definitions
Look ahead positive (?=)
Find expression A where expression B follows:
A(?=B)
Look ahead negative (?...
JQuery Event for user pressing enter in a textbox?
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Android get free size of internal/external memory
...uilder resultBuffer = new StringBuilder(Long.toString(size));
int commaOffset = resultBuffer.length() - 3;
while (commaOffset > 0) {
resultBuffer.insert(commaOffset, ',');
commaOffset -= 3;
}
if (suffix != null) resultBuffer.append(suffix)...
How to generate a create table script for an existing table in phpmyadmin?
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How do I fit an image (img) inside a div and keep the aspect ratio?
... is much simpler and it doesn't use Javascript. I don't know about browser compatibility though.
– weberc2
Jun 3 '12 at 21:13
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Downloading an entire S3 bucket?
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AWS CLI
See the "AWS CLI Command Reference" for more information.
AWS recently released their Command Line Tools, which work much like boto and can be installed using
sudo easy_install awscli
or
sudo pip install awscli
Once installed, you ca...
Uint8Array to string in Javascript
...want to add one character at the time as the string concaternation would become to CPU intensive.
13 Answers
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What is the difference between atomic / volatile / synchronized?
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return counter.getAndIncrement();
}
The AtomicInteger class uses CAS (compare-and-swap) low-level CPU operations (no synchronization needed!) They allow you to modify a particular variable only if the present value is equal to something else (and is returned successfully). So when you execute g...
To draw an Underline below the TextView in Android
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How to use a decimal range() step value?
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numpy is such an ubiquitous component of python that I consider this answer to be the most 'pythonic' of all.
– airstrike
Sep 11 '13 at 19:20
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