NAME

       append - Append to variable

SYNOPSIS

       append varName ?value value value ...?
________________________________________________________________________________________________________________

DESCRIPTION

       Append  all  of the value arguments to the current value of variable varName.  If varName does not exist,
       it is given a value equal to the concatenation of all the value arguments.  The result of this command is
       the new value stored in variable varName.  This command provides  an  efficient  way  to  build  up  long
       variables  incrementally.   For  example, “append a $b” is much more efficient than “set a $a$b” if $a is
       long.

EXAMPLE

       Building a string of comma-separated numbers piecemeal using a loop.

              set var 0
              for {set i 1} {$i<=10} {incr i} {
                  append var "," $i
              }
              puts $var
              # Prints 0,1,2,3,4,5,6,7,8,9,10

SEE ALSO

       concat(3tcl), lappend(3tcl)

KEYWORDS

       append, variable

Tcl                                                                                                 append(3tcl)