Question

I’m running a program using Tcl 8.5.9, specificly: /tcl/8.5.9_64/bin/wish8.5 I’m trying to use the lcontain command, but the tcl doesn’t recognize it. Was it excluded from that version? and is there a different command to replace it?

Answer 1

If I’m not mistaken the lcontain command checks the existence of an element in a list? This command never was in pure Tcl. It’s a part of TclX package, AFAIK.

It the Tcl.8.5 there is in operator which can be used in any expressions. For example:

set list {A B C D}
set elem "B"
if {$elem in $list} {
    puts "Element '$elem' exists in the list"
}

There is also ni operator which is opposite to in (checks if a list does not contain an element).

In earlier versions of Tcl you can use lsearch command and compare the result (index of found element) with -1 to see whether an element was found actually.