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How to sort an array in descending order in Ruby
...0.times {
ary << {:bar => rand(1000)}
}
n = 500
Benchmark.bm(20) do |x|
x.report("sort") { n.times { ary.sort{ |a,b| b[:bar] <=> a[:bar] } } }
x.report("sort reverse") { n.times { ary.sort{ |a,b| a[:bar] <=> b[:bar] }.reverse } }
x.report("sort_by ...
How to get the Power of some Integer in Swift language?
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20 Answers
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Handling InterruptedException in Java
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Gray
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answered Oct 20 '10 at 9:24
aioobeaioobe
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PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...cific case, and why?
– akaihola
Dec 20 '09 at 12:57
33
"The most common use case for using multip...
Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?
...So in that case you would want a delta that matches the status bar height (20.0 points) so that the layout looks the same in iOS6 and iOS7.
I believe this isn't needed if you use autolayout, but of course, then you lose iPad1 support, which many of us aren't willing to concede at this point in tim...
How to get memory available or used in C#
...m (in System.dll)
– Enigma Plus
May 20 '15 at 8:17
12
I'd like to also add that the PrivateMemory...
Extract a substring according to a pattern
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edited Jul 1 at 20:16
answered Jun 20 '13 at 14:10
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What's the simplest way to print a Java array?
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edited Sep 20 at 21:47
community wiki
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Is there any kind of hash code function in JavaScript?
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Find the day of a week
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df = data.frame(date=c("2012-02-01", "2012-02-01", "2012-02-02"))
df$day <- weekdays(as.Date(df$date))
df
## date day
## 1 2012-02-01 Wednesday
## 2 2012-02-01 Wednesday
## 3 2012-02-02 Thursday
Edit: Just to show another way......