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  1. input = [{:name => "Kutty", :score => 2, :some_key => 'value'},
  2.          {:name => "Kutty", :score => 4, :some_key => 'value'},
  3.          {:name => "Baba",  :score => 5, :some_key => 'value'}]
  4.  
  5. output = input.group_by { |x| x[:name] }
  6.               .map {|x,y|y.max_by {|x|x[:score]}}
  7.  
  8. puts output
Success #stdin #stdout 0.01s 4760KB
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{:name=>"Kutty", :score=>4, :some_key=>"value"}
{:name=>"Baba", :score=>5, :some_key=>"value"}
https://ideone.com/Ip4at
language:
Ruby (ruby 2.5.5)
created:
12 years ago
visibility:
public

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