join — Create a string by joining together list elements
join list ?joinString?
The list argument must be a valid Tcl list.
This command returns the string
formed by joining all of the elements of list together with
joinString separating each adjacent pair of elements.
The joinString argument defaults to a space character.
Making a comma-separated list:
set data {1 2 3 4 5}
join $data ", "
→ 1, 2, 3, 4, 5
Using join to flatten a list by a single level:
set data {1 {2 3} 4 {5 {6 7} 8}}
join $data
→ 1 2 3 4 5 {6 7} 8
list, lappend, split
element, join, list, separator
Copyright © 1993 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.