macros / code construction (and assignment)
rainer at physik3.gwdg.de
Fri Sep 29 18:45:45 UTC 1995
Dave, you wrote:
> [...] working with a computer is about the direct & immediate
> manipulation of stuff
Right. Right. Right.
> and macros seem silly.
Not always. The way I use them in Lisp, they make for better readability
of code. I admit that learning to write macros is difficult. So
silly or not not depends on the base language. As you say:
> After all, the base language already lets me extend the behavior of the
> computer, adding a second step, another execution model, just complicates
> things. In this school, you hope that the syntax is bearable enough not
> to need extension [...]
And that's the point, the difference between Self and Lisp, exactly. The
symbol `lambda' alone renders Scheme code with blocks alias closures hard
to read and discourages their widespread use. That's why Lisp just _needs_
special forms. You solved this by substituting a different brand of
parentheses for the symbol.
> As far as assignment is concerned-- [...] But my favorite treatment of
> this area may well be Glyphic's, by Mark Leczner (sp?).
Any _net_ pointers?
> Rainer, I will leave you with one last thought--
> my worst mistakes have always resulted from being too clever.
That's a good one, thank you for it.
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