Reply To: Tcl help: how do I identify a number?

Sam,

The string Tcl command has many options. One of them is the ‘is class’ option. Do a help string in hcitcl to see all options etc.

example:

set junk abcdef

string is digit -strict $junk

 —> returns a zero (not true)

set stuff 12345

string is digit -strict $stuff

  —> returns a one (true)

set nonsense “”

string is digit -strict $nonsense

  —> returns a zero (not true)

Jim Kosloskey