Sha256: 9cab00fec834e1837c866b2b102e111ffb62dbd32a364c8fd9882d4baec476e7
Contents?: true
Size: 599 Bytes
Versions: 7
Compression:
Stored size: 599 Bytes
Contents
module Enumerable
# Returns a list on non-unique,
#
# [1,1,2,2,3,4,5].nonuniq #=> [1,2]
#
# CREDIT: Martin DeMello
def nonuniq
h1 = {}
h2 = {}
each {|i|
h2[i] = true if h1[i]
h1[i] = true
}
h2.keys
end
# #
# def nonuniq!
# raise unless respond_to?(:replace)
# h1 = {}
# h2 = {}
# each {|i|
# h2[i] = true if h1[i]
# h1[i] = true
# }
# self.replace(h2.keys)
# end
# Return list of dulicate elements.
#
# CREDIT: Thibaut Barrère
alias_method :duplicates, :nonuniq
end
Version data entries
7 entries across 7 versions & 2 rubygems