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ActiveTcl User Guide |
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concat - Join lists together
concat ?arg arg ...?
This command joins each of its arguments together with spaces after
trimming leading and trailing white-space from each of them. If all
the arguments are lists, this has the same effect as concatenating
them into a single list. It permits any number of arguments; if no
args are supplied, the result is an empty string.
Although concat will concatenate lists (so the command:
concat a b {c d e} {f {g h}}
will return “a b c d e f {g h}” as its result),
it will also concatenate things that are not lists, and hence the
command:
concat " a b {c " d " e} f"
will return “a b {c d e} f” as its result.
Note that the concatenation does not remove spaces from the
middle of its arguments, so the command:
concat "a b c" { d e f }
will return “a b c d e f” (i.e. with three
spaces between the a, the b and the c).
append, eval
concatenate, join, lists
Copyright © 1995-1997 Roger E. Critchlow Jr.
Copyright © 1993 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.