Sha256: ae2faff7753c1f528cf54b09a258a430a3e66737f55cdfce9b157b44c585ef51
Contents?: true
Size: 550 Bytes
Versions: 19
Compression:
Stored size: 550 Bytes
Contents
module Memoize
class ArgsError < StandardError; end
module ClassMethods
def memoize(name)
ivar = :"@#{name.to_s.sub('?', '_predicate')}"
prepend Module.new {
define_method(name) do |*args|
raise ArgsError.new('cannot pass arguments to memoized method %p' % name) unless args.empty?
return instance_variable_get(ivar) if instance_variable_defined?(ivar)
instance_variable_set(ivar, super())
end
}
end
end
def self.included(base)
base.extend(ClassMethods)
end
end
Version data entries
19 entries across 19 versions & 1 rubygems