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irb(main):020:0> [2, 1].min
=> 1

4 Responses to “Ruby min/max”

1. Jeremy Roush Says:
   November 8th, 2007 at 2:36 am

   Old post, but useful. Much appreciated!

2. Rob Morris Says:
   May 9th, 2008 at 9:11 am

   I find the “official” version very counter-intuitive. My first thought, when coding up a comparison, is not to create a transient array.

   If you’re like me, throw this into your environment.rb or similar init code:

   module Math
   def self.min(a,b)
   a = b ? a : b
   end
   end

   Now you can do Math.min(1,2) and be a little more clear on what you’re doing. Cheers!

3. Rob Morris Says:
   May 9th, 2008 at 9:12 am

   Sorry, got garbled, here’s another attempt:

   module Math
   def self.min(a,b)
   a <= b ? a : b
   end

   def self.max(a,b)
   a >= b ? a : b
   end
   end

4. Raoul Duke Says:
   February 20th, 2009 at 8:15 pm

   @module Math

   hm, does that properly handle floating point? like, is there any weirdness with negative zero?

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