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# TITLE:
# Stackable
#
# DESCRIPTION:
# Array extensions for stack maniipulation.
#
# NOTES:
# - TODO Better name than #place --top, put, or what?
require 'facets/array/splice'
require 'facets/stackable'
class Array
include Stackable
# "Put On Top". This is an alias for unshift
# which puts an object# on top of the stack.
# It is the converse of push.
#
# a=[1,2,3]
# a.place(9) #=> [9,1,2,3]
# a #=> [9,1,2,3]
#
alias_method :poke, :unshift
# Alias for shift which removes an object
# off first slot of an array. This is
# the contrary of pop.
#
# a=[1,2,3]
# a.pull #=> 1
# a #=> [2,3]
#
alias_method :pull, :shift
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TestArray < Test::Unit::TestCase
def test_poke
a = [2,3]
assert_equal( [1,2,3], a.poke(1) )
assert_equal( [4,1,2,3], a.poke(4) )
end
def test_pull
a = [1,2,3]
assert_equal( 1, a.pull )
assert_equal( [2,3], a )
end
end
=end
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10 entries across 10 versions & 1 rubygems