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How do I remove blank elements from an array?
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511
There are many ways to do this, one is reject
noEmptyCities = cities.reject { |c| c.empty? }
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How to test which port MySQL is running on and whether it can be connected to?
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13 Answers
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What is the Scala identifier “implicitly”?
... a type with selection defined, or equivalent implicit methods.
scala> 1.min(2) // Int doesn't have min defined, where did that come from?
res21: Int = 1
scala> implicitly[Int => { def min(i: Int): Any }]
res22: (Int) => AnyRef{def min(i: Int): Any} =...
How is the AND/OR operator represented as in Regular Expressions?
...e the following situation:
The correct solution for the word would be "part1, part2".
The user should be able to enter either "part1" (answer 1), "part2" (answer 2) or "part1, part2" (answer 3).
I now try to match the string given by the user with the following, automatically created, regex express...
How to find the size of an array in postgresql
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112
As vyegorov mentioned, array_length will do the trick. Or if you know that the array is 1-dim...
Converting NumPy array into Python List structure?
How do I convert a NumPy array to a Python List (for example [[1,2,3],[4,5,6]] ), and do it reasonably fast?
5 Answers
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Disable intellij indexing on specific folder
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edited Jul 1 '11 at 19:34
answered Jun 30 '11 at 13:30
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Transform DateTime into simple Date in Ruby on Rails
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167
DateTime#to_date does exist with ActiveSupport:
$ irb
>> DateTime.new.to_date
NoMethodE...
Switch statement: must default be the last case?
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10 Answers
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How to silence output in a Bash script?
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189
If it outputs to stderr as well you'll want to silence that. You can do that by redirecting fi...