Sha256: 36fb3853e45332a009477cbc4b5a53cad9aa824f68b99d91934a1d803f2fa8b1
Contents?: true
Size: 254 Bytes
Versions: 10
Compression:
Stored size: 254 Bytes
Contents
module Enumerable
# Like #uniq, but determines uniqueness based on a given block.
#
# (-5..5).to_a.uniq_by {|i| i*i }
# #=> [-5, -4, -3, -2, -1, 0]
#
def uniq_by #:yield:
h = {}; inject([]) {|a,x| h[yield(x)] ||= a << x}
end
end
Version data entries
10 entries across 9 versions & 2 rubygems