Sha256: d49338aeba1c86d8f901f15bebaa8a22efef4f5290b329f932c4c4e8f6998dcb
Contents?: true
Size: 884 Bytes
Versions: 10
Compression:
Stored size: 884 Bytes
Contents
#
# must.rb
#
# Copyright (c) 1999-2002 Minero Aoki <aamine@loveruby.net>
#
# This program is free software.
# You can distribute/modify this program under the terms of
# the GNU Lesser General Public License version 2 or later.
#
# $Id: must.rb,v 1.12 2002/01/05 06:19:34 aamine Exp $
#
class Object
def must( *args )
args.each {|c| return self if c === self }
raise TypeError, "wrong arg type '#{self.class}' for required #{args.join('/')}"
end
def must_have( *args )
args.each do |m|
self.respond_to? m or
raise ArgumentError, "receiver #{inspect} does not have '#{m}'"
end
self
end
alias_method :needed, :must_have
def must_be( obj )
self == obj or raise ArgumentError, "expected #{eq.inspect} but is #{inspect}"
self
end
def must_exist
nil? and raise ArgumentError, 'receiver is wrongly nil'
end
end
Version data entries
10 entries across 10 versions & 2 rubygems