Lisp abilities question 
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 Lisp abilities question

>   I'm somewhat new in the field of Common Lisp programming language.  I have
>done some works with it, but often I run into problems where there are
>no buildin Lisp function to deal with them.  I will list some of them:

Common Lisp has lots of built-in functions for dealing with homogeneous
lists, but not many for dealing with trees.  The only tree functions I can
think of offhand are COPY-TREE, SUBST, and SUBST-IF.  EQUAL could also be
thought of as a tree function.

In general, it doesn't seem common to need to treat all levels of a tree
equivalently.  Each level of a tree usually represents something different.
Your examples look like the kinds of problems that come up in academic
exercises, but not in the real world.
Barry Margolin
System Manager, Thinking Machines Corp.

Sun, 28 Jul 1996 10:03:19 GMT  
 [ 1 post ] 

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