Check the range belongings : Range include « Range « Ruby






  1. Ruby
  2. Range
  3. Range include

Check the range belongings


c = -2..2
c.all? {|x| x>0}    # => false: not all values are > 0
c.any? {|x| x>0}    # => true: some values are > 0
c.none? {|x| x>2}   # => true: no values are > 2
c.one? {|x| x>0}    # => false: more than one value is > 0
c.one? {|x| x>2}    # => false: no values are > 2
c.one? {|x| x==2}   # => true: one value == 2
[1, 2, 3].all?      # => true: no values are nil or false
[nil, false].any?   # => false: no true values
[].none?            # => true: no non-false, non-nil values








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5.Range containability check
6.Range pattern match