Divide with block : Set « Collections « Ruby






  1. Ruby
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  3. Set

Divide with block


require 'set'

s = %w[ant ape cow hen hog].to_set # A set of words

s.divide {|x,y| x[0] == y[0]}      # Divide into subsets by first letter

# => #<Set:{#<Set:{"hog", "hen"}>, #<Set:{"cow"}>, #<Set:{"ape", "ant"}>}>








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18.Clear a set
19.Is it empty
20.Each loop
21.Map elements in a set
22.Collect in place
23.Convert set to array
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26.Classify set elements as even or odd
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28.Flatten the subsets
29.Add new method to set
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32.Divide a set by even and odd value
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35.Divide set into three sub sets
36.Classify a set into three
37.Convert a hash to set and divide
38.Add set operation to Array
39.Sort with block
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