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unless Enumerable.method_defined? :several?
module Enumerable
# Checks if two or more elements meet a certain predicate.
#
# @example
# [1, 2, 3, 4].several?(&:even?) #=> true
# [1, 1, 3, 3].several?(&:even?) #=> false
#
# Without a block uses the identify of the elements as default predicate.
# This means that nil and false elements will be ignored.
#
# @example
# [1, false, nil].several? #=> false
# [1, 2, 3].several? #=>true
def several?
found_count = 0
if block_given?
each do |*o|
if yield(*o)
found_count += 1
return true if found_count > 1
end
end
else
each do |o|
if o
found_count += 1
return true if found_count > 1
end
end
end
false
end
end
end
|
