TCL question

[ghou]

Hello,
I have a simple tcl question.
I have a variable name which has the value of another variable in it. How do I reference the value of this variable?

eg
set a 3
set b_$a 5

How do I reference the value of b_$a?

If I use $b_$a, it does not work. I have tried other things like using ${b_$a} etc, but to no avail.

Any help is appreciated.

 

[Bong]

It depends on in what context you want to refer to it. Say you want to set another variable equal to the contents of "b_3", that is, "b_$a". You can use set as in:

set newvar [set b_$a]

Alternatively, you can use delayed substitution, append, and subst:

set c {$b}
append c -$a
subst $c

_________________
Bob Rashkin