Sha256: 42eb840a14407160bde60ac953cd2484333d844990786dd670a2c44c179bc59a
Contents?: true
Size: 1005 Bytes
Versions: 22
Compression:
Stored size: 1005 Bytes
Contents
#--
# Credit goes to Florian Gross.
#++
require 'facet/enumerable/filter_collect'
module Enumerable
# Collects/Maps and compacts items in one single step.
# The items for which the supplied block returns +nil+ will not
# end up in the resulting array.
#
# # Return telephone numbers of all persons that have a telephone number.
# persons.compact_collect { |person| person.telephone_no }
#
# Also see Enumerable#collect, Enumerable#map, Array#compact.
#
def compact_collect #:yield:
filter_collect do |item|
new_item = yield(item)
throw(:skip) if new_item.nil?
new_item
end
end
alias_method :compact_map, :compact_collect
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TCEnumerable < Test::Unit::TestCase
def test_compact_collect
a = [1,2,nil,4].compact_collect { |e| e }
assert_equal( [1,2,4], a )
end
end
=end
Version data entries
22 entries across 22 versions & 1 rubygems