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Contents
module Enumerable
unless method_defined?(:none?) # 1.8.7+
# Enumerable#none? is the logical opposite of the builtin method
# Enumerable#any?. It returns +true+ if and only if _none_ of
# the elements in the collection satisfy the predicate.
#
# If no predicate is provided, Enumerable#none? returns +true+
# if and only if _none_ of the elements have a true value
# (i.e. not +nil+ or +false+).
#
# [].none? # => true
# [nil].none? # => true
# [5,8,9].none? # => false
# (1...10).none? { |n| n < 0 } # => true
# (1...10).none? { |n| n > 0 } # => false
#
# CREDIT: Gavin Sinclair
def none? # :yield: e
if block_given?
not self.any? { |e| yield e }
else
not self.any?
end
end
end
end
Version data entries
7 entries across 6 versions & 1 rubygems