Sha256: a939d119929033fa1c0931cec5f884559670a94bea0f75a47f8524df8a1762d6
Contents?: true
Size: 585 Bytes
Versions: 26
Compression:
Stored size: 585 Bytes
Contents
class Array
# Returns the positive ordinal index given
# a cardinal position, 1 to n or -n to -1.
#
# [1,2,3,4,5].pos(1) #=> 0
# [1,2,3,4,5].pos(-1) #=> 4
#
def pos(i)
if i > 0
return i - 1
else
self.length + i
end
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TCArray < Test::Unit::TestCase
def test_pos
a = [1,2,3,4,5]
assert_equal( 0, a.pos(1) )
assert_equal( 4, a.pos(-1) )
end
end
=end
Version data entries
26 entries across 26 versions & 1 rubygems