CONCAT(3TCL) - Linux man page online | Library functions

Join lists together.

concat(3tcl) Tcl Built-In Commands concat(3tcl) _________________________________________________________________________________________________


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 of the arguments are lists, this has the same effect as concatenating them into a single list. Arguments that are empty (after trimming) are ignored entirely. It permits any number of arguments; if no args are sup‐ plied, the result is an empty string.


Although concat will concatenate lists, flattening them in the process (so giving the fol‐ lowing interactive session): % concat a b {c d e} {f {g h}} a b c d e f {g h} it will also concatenate things that are not lists, as can be seen from this session: % concat " a b {c " d " e} f" a b {c d e} f Note also that the concatenation does not remove spaces from the middle of values, as can be seen here: % concat "a b c" { d e f } a b c d e f (i.e., there are three spaces between each of the a, the b and the c).


append(3tcl), eval(3tcl), join(3tcl)


concatenate, join, list
Tcl 8.3 concat(3tcl)
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concat(3tcl) referred by after(3tcl) | append(3tcl) | CmdWrite(3tclx) | eval(3tcl) | ObjCmdWrite(3tclx)
refer to append(3tcl) | eval(3tcl) | join(3tcl)
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