well nothing is personal with it. its just a normal view if other people would see that kind of codes. okey then, the lacking with this regex:
if ($b=~/^[1-5]\z/) {
print "\$b has to be a number and is either 1, 2, 3, 4, or 5.\n";
}
is what if $b contains:
my $b = " 5 ";
or
my $b = " \t\t 1 \t ";
then it wont print the message because of the whitespace. but i prefer to that codes (just add a code before "if"):
$b =~ s/\s+//g; #additional code
if ($b=~/^[1-5]\z/) {
print "\$b has to be a number and is either 1, 2, 3, 4, or 5.\n";
}
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