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December 20, 2015 08:49
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ruby: sort hash by key.
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| hash1 = {:b => 1, :a => 2} | |
| # => {:b=>1, :a=>2} | |
| Hash[hash1.sort_by{|key, val|key}] | |
| # => {:a=>2, :b=>1} | |
| Hash[hash1.sort] | |
| # => {:a=>2, :b=>1} | |
| # sort by value | |
| Hash[hash1.sort_by{|key, val|val}] | |
| # => {:b=>1, :a=>2} |
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