I have been following this thread, but I would just like to inject a summary
of the various related UPPERCASE blocks
PRE Executes on block entry.
Loop variables are in a known state
POST Executes on block exit.
Loop variables are in a known state
NEXT Executes on implicit block exit or call to next()
Loop variables are in a known state
LAST Executes on implicit loop exit or call to last()
Loop variables may be unknown
And I think this thread is proposing
FIRST A PRE block that is executed only on the first itteration
of the loop
BETWEEN A PRE block that does not execute for the first iteration
of the loop.
So FIRST and BETWEEN are just shorthand for
my $count;
loop {
PRE {
if ($count++) {
# BETWEEN code here
}
else {
# FIRST code here
}
}
}
Graham.
