Subject: Re: SOLUTION FOR : How can I add a new children in a node?? From: Matthias Clasen <clasen@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 5 Oct 1999 12:20:17 +0200 |
> > Quoting Frank A. Christoph <christo@xxxxxxxxxxxxxxxxxx>: > > What Brandon wrote about "storing the definition environment" is true about > > lambda-calculus, but Scheme and DSSSL are not quite lambda-calculus. > > > Actually, what I wrote came from the spec (8.3.1.4): > A lambda expression evaluates to a procedure. The environment > in effect when the lambda expression was evaluated is > remembered as part of the procedure. When the procedure is > later called with some actual arguments, the environment in > which the lambda expression was evaluated shall be extended by > binding the variables in the formal argument list to the > corresponding actual argument values, and the body of the > lambda expression shall be evaluated in the extended > environment. The result of the body shall be returned as the > result of the procedure call. > Am I missing something? > No, you are right, that is just what's called a `closure'. -- Matthias Clasen, Tel. 0761/203-5606 Email: clasen@xxxxxxxxxxxxxxxxxxxxxxxxxx Mathematisches Institut, Albert-Ludwigs-Universitaet Freiburg DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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