Hi gaochong!
I should first note that you've placed a one line separator between each two
consecutive lines which makes your message harder to read.
On Wednesday 18 Nov 2009 09:24:44 gaochong wrote:
> #!/usr/bin/perl -w
>
>
>
> use strict;
>
use strict and warnings - that's good.
>
>
> $SIG{INT}=\&stop;
>
> $|=1;
>
> my $count=3;
>
> while ($count) {
>
> print "hello\n";
>
> sleep 1;
>
> }
>
>
>
> sub stop {
>
> $SIG{INT}=\&stop; -----------------------------here why set this
> ? if no ,the result is same .
>
This is required for portability. From what I recall, on some operating
systems, you need to reassign the signal every time it is called. So it's a
good practice to include it.
Regards,
Shlomi Fish
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