Created
March 22, 2013 07:34
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| wei:classnotes wei$ irb | |
| irb(main):001:0> a = [{:a=>1}, {:a=>2}] | |
| => [{:a=>1}, {:a=>2}] | |
| irb(main):003:0> a.sort! {|a, b| a[:a] <=> b[:a]} | |
| => [{:a=>1}, {:a=>2}] | |
| irb(main):004:0> b = [{:a => 1}] | |
| => [{:a=>1}] | |
| irb(main):005:0> b.sort! {|a, b| a[:a] <=> b[:a]} | |
| => [{:a=>1}] |
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