append(1T) Tcl Built-In Commands append(1T) __________________________________________________________________________________________________________________________________________________ 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 doesn't 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(1T), lappend(1T) KEYWORDS append, variable ATTRIBUTES See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES Source for Tcl is available on http://opensolaris.org. Tcl append(1T)