Sha256: 9768892efeefc47c0c7c1a65f34050b3c1809099b574a0faef42a2d7244de1ef
Contents?: true
Size: 862 Bytes
Versions: 26
Compression:
Stored size: 862 Bytes
Contents
module Enumerable
# Produces a hash from an Enumerable with index for keys.
#
# enu = 'a'..'b'
# enu.to_h #=> { 0=>'a', 1=>'b' }
#
# If a block is passed, the hash values will be set by
# calling the block with the enumerated element and it's
# counter.
#
# enu = 'a'..'b'
# enu.to_h{ |e,i| e } #=> { 0=>'a', 1=>'b' }
#
# See also #graph.
#
def to_h( &blk )
h = {}
if block_given?
each_with_index{ |e,i| h[i] = blk.call(e,i) }
else
each_with_index{ |e,i| h[i] = e }
end
h
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TCEnumerable < Test::Unit::TestCase
def test_to_h
a = [:a,:b,:c]
assert_equal( { 0=>:a, 1=>:b, 2=>:c }, a.to_h )
end
end
=end
Version data entries
26 entries across 26 versions & 1 rubygems