Sha256: 02e88c31036a5e3e9d7b22806b9a9b9ab2ed4c0e61609bfce152ecf1e00fa4bb
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Size: 578 Bytes
Versions: 9
Compression:
Stored size: 578 Bytes
Contents
# frozen_string_literal: true
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, '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
9 entries across 9 versions & 2 rubygems