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Capture key press (or keydown) event on DIV element
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302
(1) Set the tabindex attribute:
<div id="mydiv" tabindex="0" />
(2) Bind to keydown:
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How does RegexOptions.Compiled work?
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304
RegexOptions.Compiled instructs the regular expression engine to compile the regular expression...
Convert integer into its character equivalent, where 0 => a, 1 => b, etc
... lower case letters:
var chr = String.fromCharCode(97 + n); // where n is 0, 1, 2 ...
97 is the ASCII code for lower case 'a'. If you want uppercase letters, replace 97 with 65 (uppercase 'A'). Note that if n > 25, you will get out of the range of letters.
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How dangerous is it to compare floating point values?
...nt the actual result. An easy example where you can see this is adding x = 0x1fffffe and y = 1 as floats. Here, x has 24 bits of precision in the mantissa (ok) and y has just 1 bit, but when you add them, their bits are not in overlapping places, and the result would need 25 bits of precision. Inste...
Simplest code for array intersection in javascript
... Ry-♦
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answered Dec 11 '09 at 3:08
Anon.Anon.
49.5k88 gold badges...
Generating random number between 1 and 10 in Bash Shell Script [duplicate]
How would I generate an inclusive random number between 1 to 10 in Bash Shell Script?
6 Answers
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What are the options for storing hierarchical data in a relational database? [closed]
...ttle for one or the other especially if there are more than, say, a lousy 100,000 nodes or so. Using the push stack method can take a whole day to do the conversion on what MLM'ers would consider to be a small million node hierarchy.
I thought I'd give Celko a bit of competition by coming up with ...
Finding Number of Cores in Java
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edited Nov 17 '11 at 9:03
answered Jan 21 '11 at 13:58
d...
Float vs Decimal in ActiveRecord
...a Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.100000000000000005551115123125782702...
rotating axis labels in R
...re's an example:
require(grDevices)
tN <- table(Ni <- stats::rpois(100, lambda=5))
r <- barplot(tN, col=rainbow(20), las=1)
That represents the style of axis labels. (0=parallel, 1=all horizontal, 2=all perpendicular to axis, 3=all vertical)
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