From: gotoken@... (GOTO Kentaro) Date: 1999-06-01T11:49:51+09:00 Subject: [ruby-talk:00366] Re: type-checking Hi, In message "[ruby-talk:00363] type-checking" on 99/05/30, "Michael Neumann" writes: >Minero Aoki has written some extension to the classes Object and Module (Parser Generator RACC), which implement "type-checking". For example you can define properties (instance variables - like attr) where the setter-method checks the type of the argument. Do you mean the `must' method in racc-0.8.11/must.rb? -- gotoken