In general, you can't when using a foreach() loop. In specific instances, you can use join() (when joining a string), shift elements off the array and check its length, or or use an iterator object to abstract it all away:
while (my $value = $it->next()) {
# stuff
if ($it->has_next()) {
# for all but the last value
}
}
update: equivalent with shift
while (@array) {
my $value = shift @array;
# stuff
if (@array) {
# for all but the last value
}
}
update2: fixed logic error: s/unless/if/; - sorry about that.
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