What language features does Ruby borrow from CLU? [closed]

Question

I have read in Ola Bini's blog that Ruby has influenced by CLU language, but besides the multiple assignment I'm not sure what other influences exist. Any guidance and simple examples would be most appreciative.

Answer 1

The only time matz ever mentioned CLU was when talking about iterators. Everything else is more or less directly from Smalltalk, Lisp, Flavors and Perl. Singleton classes seem to be unique to Ruby, though they are related to Smalltalk's metaclasses.