for - ``For'' loop
for start test next body
For is a looping command, similar in structure to the C
for statement. The start, next, and
body arguments must be Tcl command strings, and test
is an expression string.
The for command first invokes the Tcl interpreter to
execute start. Then it repeatedly evaluates test as
an expression; if the result is non-zero it invokes the Tcl
interpreter on body, then invokes the Tcl interpreter on next,
then repeats the loop. The command terminates when test evaluates
to 0. If a continue command is invoked within body then
any remaining commands in the current execution of body are skipped;
processing continues by invoking the Tcl interpreter on next, then
evaluating test, and so on. If a break command is invoked
then the for command will
The operation of break and continue are similar to the
corresponding statements in C.
For returns an empty string.
for, iteration, looping
Copyright © 1993 The Regents of the University of California.
Copyright © 1994-1996 Sun Microsystems, Inc.
Copyright © 1995-1997 Roger E. Critchlow Jr.