From: matz@... (Yukihiro Matsumoto) Date: 2000-12-25T12:35:33+09:00 Subject: [ruby-talk:8068] Re: String#unfreeze Hi, In message "[ruby-talk:8051] Re: String#unfreeze" on 00/12/25, Yasushi Shoji writes: |This came up on -list, too. and, IIRC, you said it'd be possible (or |easier?) to add #unfreeze if we'd have two freeze, one with |unfreezable capability and the other with current non-unfreezable |freeze. Yes. That's easier way. In that case, unfreezable 'freeze' would be a hidden feature to implement copy-on-write. But two freeze may surprise programmers sometimes. matz.