Classify set elements as even or odd : Set « Collections « Ruby






Classify set elements as even or odd

require 'set'

s = (0..3).to_set     # => #<Set: {0, 1, 2, 3}>
s.classify {|x| x%2}  # => {0=>#<Set: {0, 2}>, 1=>#<Set: {1, 3}>}

 








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