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Contents?: true
Size: 271 Bytes
Versions: 10
Compression:
Stored size: 271 Bytes
Contents
module Enumerable
# Like #uniq, but determines uniqueness based on a given block.
#
# (-5..5).to_a.uniq_by {|i| i*i }
#
# produces
#
# [-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 10 versions & 1 rubygems