tcl7.6 User Commands - lappend






NAME

     lappend - Append list elements onto a variable


SYNOPSIS

     lappend varName ?value value value ...?





DESCRIPTION

     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 text.  This command provides a relatively efficient  way
     to  build  up large lists.  For example, ``lappend a $b'' is
     much more efficient than ``set a  [concat  $a  [list  $b]]''
     when $a is long.



KEYWORDS

     append, element, list, variable