CODEWITHSUNDEEP
stringtcl
Miculas13
Miculas13

Reputation: 1

Tcl: Join list of strings with the string from another variable?

How it is possible to join the string from a variable with a list of strings? More exactly, I have this:

set Dir "02_E12_SP_el";
set OutputDir [join {$Dir _ forcesElem21.out} ""];

I want OutputDir to be "02_E12_SP_el_forcesElem21.out", but instead I obtain "$Dir_forcesElem21.out"

Upvotes: 0

Views: 1498

Answers (1)

Brad Lanam
Brad Lanam

Reputation: 5723

When you wrap a variable in braces {}, it will not be interpreted as a variable. 

{$Dir _ forcesElem21.out}

creates a static list.

There are several methods.

The join command concatenates a list of elements together. It is more useful when the list is already built and has the flexibility to specify what to join with (e.g. {, }).

set var 123
set mystr abc
set newstr [join [list $mystr def $var] {}]

Direct concatentation:

set var 123
set mystr abc$var
set mystr ${var}abc

Or the append command:

set var 123
set mystr abc
append mystr $var

References: append, join

Upvotes: 2

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