append(n) - phpMan

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



_________________________________________________________________________________________________

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 pro-
       vides 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(n), lappend(n)


KEYWORDS
       append, variable



Tcl                                                                                     append(n)

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