Sha256: c8d263afd44288b0edb7c7a95e5b914d26826fc64374b223af83702f02e547a3
Contents?: true
Size: 972 Bytes
Versions: 6
Compression:
Stored size: 972 Bytes
Contents
# Copyright (c) 2008 Michael Fellinger m.fellinger@gmail.com
# All files in this distribution are subject to the terms of the Ruby license.
class Array
# a = [1, 2, 3]
# a.put_within(4, :after => 2, :before => 3)
# a # => [1, 2, 4, 3]
def put_within(object, constrain)
pre, post = constrain.values_at(:after, :before)
unless rindex(post) - index(pre) == 1
raise ArgumentError, "Too many elements within constrain"
end
put_after(pre, object)
end
# a = [1, 2, 3]
# a.put_after(2, 4)
# a # => [1, 2, 4, 3]
def put_after(element, object)
raise ArgumentError, "The given element doesn't exist" unless include?(element)
self[index(element) + 1, 0] = object
end
# a = [1, 2, 3]
# a.put_before(2, 4)
# a # => [1, 4, 2, 3]
def put_before(element, object)
raise ArgumentError, "The given element doesn't exist" unless include?(element)
self[rindex(element), 0] = object
end
end
Version data entries
6 entries across 6 versions & 3 rubygems