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I'm looking for a quick way to filter an array in Ruby and am wondering whether the language has a counterpart to the filter method native to the JavaScrpt array object.

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    Out of curiousity, if you type "ruby array filter" into A Famous Web Search Engine, do you not get this or this or this or any of several others within the first few results? Commented Apr 28, 2015 at 6:51
  • Just a suggestion, you have to read ruby array documentation Commented Apr 28, 2015 at 6:54
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    That said, I'm not seeing a good, simple duplicate of that question here on Stack Overflow. Commented Apr 28, 2015 at 7:04
  • Yep. Even a Google search immediately turned up a bunch of stuff I didn't need. Commented Apr 28, 2015 at 7:06

4 Answers 4

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You can filter an array by 

['a', 'b', 'c'].select{|item| item == 'a'} # ["a"]
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Yes, it has - select.

From documentation:

[1, 2, 3, 4, 5].select { |num|  num.even?  }
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2 
[1,2,3].select do |i|
  i > 1
end
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1 Comment

Refer to alex's answer to see how you mark up code on SO.
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class Array
  alias_method :select, :filter
end
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1 Comment

A little description/explanation won't be bad with it.

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