You can convert from Array to Hash in Ruby using Array#to_h.
["a", "b", "c"].to_h { |str| [str, str] }
# => {"a"=>"a", "b"=>"b", "c"=>"c"}
[1, 2, 3].to_h { |num| [num, num * num] }
# => {1=>1, 2=>4, 3=>9}
Array to Hash in Ruby
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You can convert from Array to Hash in Ruby using Array#to_h.
["a", "b", "c"].to_h { |str| [str, str] }
# => {"a"=>"a", "b"=>"b", "c"=>"c"}
[1, 2, 3].to_h { |num| [num, num * num] }
# => {1=>1, 2=>4, 3=>9}