diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/singleton.rb | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/singleton.rb b/lib/singleton.rb index 2b5a3a3cb5..6ff6d190f2 100644 --- a/lib/singleton.rb +++ b/lib/singleton.rb @@ -66,18 +66,17 @@ module Singleton # singletons types (sounds like an oxymoron) and # helps out people counting on transitive mixins unless mod.instance_of? (Class) - raise TypeError.new "Inclusion of the OO-Singleton module in module #{mod}" + raise TypeError, "Inclusion of the OO-Singleton module in module #{mod}" end unless (class << mod; self end) <= (class << Object; self end) - raise TypeError.new "Inclusion of the OO-Singleton module in singleton type" + raise TypeError, "Inclusion of the OO-Singleton module in singleton type" end super end def included (klass) # remove build in copying methods klass.class_eval do - undef_method(:clone) rescue nil - undef_method(:dup) rescue nil + define_method(:clone) {raise TypeError, "can't clone singleton #{self.type}"} end # initialize the ``klass instance variable'' @__instance__ to nil |