Different between 2 code
in [Ruby]
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From: Amir Ebrahimifard on 3 Aug 2010 12:58 Hi Why 2 different sort in below code return different result ? ( I dont understand different between "v1 <=> v2" and "v2 <=> v1" ). ------------------------------------------ array = [3,1,5,2,4] # => [3, 1, 5, 2, 4] array.sort {|v1,v2| v1 <=> v2 } # => [1, 2, 3, 4, 5] array.sort {|v1,v2| v2 <=> v1 } # => [5, 4, 3, 2, 1] ------------------------------------------ -- Posted via http://www.ruby-forum.com/.
From: Bob Smith on 3 Aug 2010 14:53 > ( I dont understand different between "v1 <=> v2" and "v2 <=> v1" ). I think a quick Google search on the "spaceship operator" should help you with understanding the differences. -- Posted via http://www.ruby-forum.com/.
From: Brian Candler on 4 Aug 2010 04:08 Amir Ebrahimifard wrote: > Hi > Why 2 different sort in below code return different result ? > ( I dont understand different between "v1 <=> v2" and "v2 <=> v1" ). irb(main):001:0> 1 <=> 2 => -1 irb(main):002:0> 2 <=> 1 => 1 irb(main):003:0> 1 < 2 => true irb(main):004:0> 2 < 1 => false -- Posted via http://www.ruby-forum.com/.
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