The union is the set of values that appear in either : Set « Collections « Ruby






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The union is the set of values that appear in either


require 'set'

primes = Set[2, 3, 5, 7]
odds = Set[1, 3, 5, 7, 9]

p primes | odds             # => #<Set: {5, 1, 7, 2, 3, 9}>
p primes.union(odds)        # an explicitly named alias








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10.merge a range to a set
11.Remove elements from a set
12.Set subtraction
13.Delete elements from a set with block
14.Reject elements from a set
15.Do an in-place intersection like this:
16.Replace a set
17.Clear a set
18.Is it empty
19.Each loop
20.Map elements in a set
21.Collect in place
22.Convert set to array
23.Inspect a set
24.Compare two sets
25.Classify set elements as even or odd
26.Divide set
27.Divide with block
28.Flatten the subsets
29.Add new method to set
30.Partitioning or Classifying a Set
31.Divide a set by value
32.Divide a set by even and odd value
33.Divide a set by its element's class
34.Divide a set by absolute value
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
40.Set includes and membership