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Get a pixel from HTML Canvas?
...color.
for (var i = 0, n = pix.length; i < n; i += 4) {
pix[i ] = 255 - pix[i ]; // red
pix[i+1] = 255 - pix[i+1]; // green
pix[i+2] = 255 - pix[i+2]; // blue
// i+3 is alpha (the fourth element)
}
// Draw the ImageData at the given (x,y) coordinates.
context.putImageData(imgd,...
Environment variables for java installation
...with a Charset.defaultCharset() of UTF-8 (instead of the default Windows-1252). This has saved a lot of headaches when wirking with my own code and that of others, which unfortunately often assume the (sane) default encoding UTF-8.
When JDK is installed, it adds to the system environment variable Pa...
How to display a list inline using Twitter's Bootstrap
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578
Bootstrap 2.3.2
<ul class="inline">
<li>...</li>
</ul>
Bootstrap ...
A more useful statusline in vim? [closed]
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answered Jan 13 '12 at 8:54
Gavin GilmourGavin Gilmour
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Debugging sqlite database on the device
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answered Dec 8 '11 at 16:45
IdolonIdolon
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Calculating the difference between two Java date instances
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edited Feb 5 '19 at 10:07
JodaStephen
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How to redirect to a 404 in Rails?
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1056
Don't render 404 yourself, there's no reason to; Rails has this functionality built in already....
Convert normal date to unix timestamp
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answered Aug 9 '12 at 22:53
fguillenfguillen
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Can I set a TTL for @Cacheable
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answered Nov 18 '11 at 11:54
JB NizetJB Nizet
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What is the difference between float and double?
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528
Huge difference.
As the name implies, a double has 2x the precision of float[1]. In general a ...