using contents of variable as part of variable name 2

[Breadcrust]

i want to do some thing like this:

set configcmd ${taskman_${taskman}_${task}_configcmd}

but as you can see that wont work, how can i do this so it will work?

ps - i know there is better ways to impliment this with arrys but im not interested in that right now


[tt]
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[/tt]

 

[marsd]

Look at subst.

[subst -novariable]

for instance.

 

[ulis]

To do that, you need an extra round of Tcl evaluation.
As marsd said,

subst

is just for that.
You can also get an extra round by using set:

  set configcmd [set taskman_${taskman}_${task}_configcmd]

([set var] takes a variable name and returns the variable value)

The Tcl evaluation mechanism is described here:

http://mini.net/tcl/Endekalogue

(ref [1]).

But really, you seem to need arrays (building variables name is a true signal for that).
What about

::taskman($taskman.$task.configcmd)

?
(note the :: to have a global reference and avoid all array-arguments burden)

HTH

ulis