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Generating Guids in Ruby
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315
As of Ruby 1.9, uuid generation is built-in. Use the SecureRandom.uuid function.
For example:
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When should I use jQuery's document.ready function?
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answered Oct 25 '12 at 5:46
JashwantJashwant
25.7k1313 gold badges6464 silver badges9696 bronze badges
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How to perform a mysqldump without a password prompt?
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answered Feb 15 '12 at 12:08
FranklineFrankline
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Checking for empty queryset in Django
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answered Sep 7 '09 at 5:53
AdamAdam
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How do I create an average from a Ruby array?
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Try this:
arr = [5, 6, 7, 8]
arr.inject{ |sum, el| sum + el }.to_f / arr.size
=> 6.5
Note the .to_f, which you'll want for avoiding any problems from integer division. You can also do:
arr = [5, 6, 7, 8]
arr.inject(0.0) { |sum, el| sum ...
Best way to format integer as string with leading zeros? [duplicate]
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54
@Ajay 004 isn't an actual integer
– Alvaro
Jan 29 '15 at 18:37
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Location Services not working in iOS 8
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edited Jul 11 at 21:52
Jean-François Fabre♦
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Is there a difference between x++ and ++x in java?
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++x is called preincrement while x++ is called postincrement.
int x = 5, y = 5;
System.out.println(++x); // outputs 6
System.out.println(x); // outputs 6
System.out.println(y++); // outputs 5
System.out.println(y); // outputs 6
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How to get value of selected radio button?
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245
var rates = document.getElementById('rates').value;
The rates element is a div, so it won't ha...
Remove unwanted parts from strings in a column
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eumiroeumiro
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