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What are the options for storing hierarchical data in a relational database? [closed]
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My favorite answer is as what the first sentence in this thread suggested. Use an Adjacency Lis...
Finding Number of Cores in Java
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edited Nov 17 '11 at 9:03
answered Jan 21 '11 at 13:58
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Float vs Decimal in ActiveRecord
...esent 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)
=> "0.100000000000000005551115123125...
rotating axis labels in R
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179
Not sure if this is what you mean, but try setting las=1. Here's an example:
require(grDevic...
How to remove all leading zeroes in a string
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10 Answers
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Android Studio 0.4 Duplicate files copied in APK META-INF/LICENSE.txt
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13 Answers
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Sass negative variable value?
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216
Try it like this
margin: 0 (-$pad) 20px (-$pad);
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Retrieve list of tasks in a queue in Celery
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14 Answers
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Best way to iterate through a Perl array
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In terms of speed: #1 and #4, but not by much in most instances.
You could write a benchmark to confirm, but I suspect you'll find #1 and #4 to be slightly faster because the iteration work is done in C instead of Perl, and no needless copying ...