Re: Syntax, expressiveness and the beauty of Tcl


Christian Gollwitzer wrote:

set x [expr $a+$b]

I also dislike expr in Tcl, if one has to do lots of math. Especially
that in 99% cases one needs to use additional braces. Set is OK. I'd
like to have a syntax like
[...]
set a ${$b+7}

That all looks very weird and complex. What about a simple and strict
polish notation, like in LISP:

proc + {a b} {expr {$a + $b}}
proc - {a b} {expr {$a - $b}}
proc * {a b} {expr {$a * $b}}
proc / {a b} {expr {$a / $b}}

set res [+ [* 7 8] [- 8 9]]
55

Every operator is a command as well and it is compatible with the rest
of Tcl (although it will be even less familiar to the majority of
programmers)


Eckhard

.

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