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Contents
unless Enumerable.method_defined? :take_last_while?
module Enumerable
# Take the last n elements of an enumerable meeting a certain predicate.
#
# @return [Array] an array containing the matching elements
#
# @example
# [1, 2, 3, 5].take_last_while(&:odd?) #=> [3, 5]
def take_last_while
return to_enum(:take_last_while) unless block_given?
result = []
reverse_each { |elem| yield(elem) ? result.unshift(elem) : break }
result
end
end
end
Version data entries
23 entries across 20 versions & 6 rubygems