wrong # args

[Rick Pritchett]

should i be using some string command in the while instead

errorInfo:

wrong # args: should be “while test command”

Topic

[Jim Kosloskey]

Rickie,

I do this:

while {$whatever != “”} {

          other tcl stuff

        }

Rather than :

while {$whatever != “”}

       { other tcl stuff

       }

I think the while command needs to see the open curly brace for the scrit to be executed on the same line as the while command.

Jim Kosloskey

email: jim.kosloskey@jim-kosloskey.com 30+ years Cloverleaf, 60 years IT – old fart.

[Charlie Bursell]

Jim:

Please don’t tell these guys to use a numerical compare when comparing strings.  I know it’s hard to teach an old dog like you new tricks but I think there is hope for the others  😆

It is *MUCH* more ergonomic, and might avoid conversion problems, to use the string command like:

   if {[string equal $var “”]}

Or even better since an empty list and an empty string are the same:

   if {[lempty $var]}

You can get by with this most of the time in Tcl but it is slower.  However, if you get used to doing it that way then enter something like !- =foo in Xlate, it will not work.  So it is best to use string commands for string compares and numerical compares for numbers.

Finished with my  soapbox now  😉

[Jim Kosloskey]

Charlie,

I agree with you regarding using string functions and I tend to use them.

However, in this case I was trying to show the structural error of the placement of the curly braces (and how that might be corrected) not address the issue of trying to correct the compare technique.

Jim Kosloskey

email: jim.kosloskey@jim-kosloskey.com 30+ years Cloverleaf, 60 years IT – old fart.

[Charlie Bursell]

Just pulling your string Jim  🙂

[Author]

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