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lappend(n) - lappend, lappend - Append list elements onto a variable - man n lappend

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lappend(n)                   Tcl Built-In Commands                  lappend(n)

       lappend - Append list elements onto a variable

       lappend varName ?value value value ...?

       This command treats the variable given by varName as a list and appends
       each of the value arguments to that list as a  separate  element,  with
       spaces  between elements.  If varName doesn't exist, it is created as a
       list with elements given by the value arguments.  Lappend is similar to
       append except that the values are appended as list elements rather than
       raw(3x,7,8,3x cbreak) text.  This command provides a relatively efficient way to build up
       large lists.  For example, ``lappend a $b'' is much more efficient than
       ``set(7,n,1 builtins) a [concat $a [list $b]]'' when $a is long.

       list(n), lindex(n), linsert(n), llength(n), lset(n) lsort(n), lrange(n)

       append, element, list, variable

Tcl                                                                 lappend(n)

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