How to return a value in a specified range in better way with ruby

Question

I add a method to Numeric class like this:

class Numeric
  def limitate(min, max)
    return self if self.between?(min,max)
    return max if self > max
    min
  end
end

I want to get a value if the value is in a specified range, and if it is outside range it should return maximum or minimum value.

Can I write it more simply? And how?

See also: http://stackoverflow.com/questions/12020787/is-there-a-limit-clamp-function-in-ruby — Mike Tunnicliffe, Aug 29 '14 at 09:44

score 2 · Accepted Answer · edited Aug 29 '14 at 09:53

2

There is sadly no clamp in Ruby yet I think. Another way to write it is:

v = [[v, min].max, max].min

edited Aug 29 '14 at 09:53

BroiSatse

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answered Aug 29 '14 at 09:43

Mike Tunnicliffe

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score 0 · Answer 2 · answered Aug 29 '14 at 12:37

0

Maybe make sure that min is lower than max first.
Otherwise your method will semanticly error if the user forgot which one should go first, min or max.

min, max = max, min if min > max

answered Aug 29 '14 at 12:37

Adrian

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How to return a value in a specified range in better way with ruby

2 Answers2