From: Joao Silva <rubyforum@...>
Date: 2008-12-10T07:58:18+09:00
Subject: want to search value in nested arrays and return other value

Hi.

I have following problem:

VALUES = [['value 1', 1], ['value 2', 2], ['value 3', 3]]

I need a function that returns 'value 1' if I call the function with
parameter 1.

I tried this:

def value_name(value)
  VALUES.select {|v| v[1] == 1}[0][0]
end

so value_name(1) returns 'value 1' but is there something more error
tolerant? E.g. returning '' if value isn't present instead of throwing
an error?

Changing the structure of VALUES is no option, I need exactly this
structure for options_for_select from the Rails framework

Thanks in advance
Andreas
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