Sha256: 3704c891186e9303a4b6261b2d057e95fd76bbf9e20bf6b5a9808669dce0d36c
Contents?: true
Size: 411 Bytes
Versions: 5
Compression:
Stored size: 411 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]}
#
# _produces_
#
# [ ['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
5 entries across 5 versions & 2 rubygems