Sha256: 868ebf57082ed6e4d0684435bd658d939495962cba72f7b3da17398f6078ef2f
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Size: 392 Bytes
Versions: 7
Compression:
Stored size: 392 Bytes
Contents
require 'facets/enumerable/group_by'
module Enumerable
# Similar to #group_by but returns an array of the groups.
# Returned elements are sorted by block.
#
# %w{this is a test}.cluster_by {|x| x[0]}
# #=> [ ['a'], ['is'], ['this', 'test'] ]
#
# CREDIT: Erik Veenstra
def cluster_by(&b)
group_by(&b).sort.transpose.pop || [] # group_by(&b).values ?
end
end
Version data entries
7 entries across 6 versions & 1 rubygems