> Perhaps you learnt to program with something like
> Apple Basic like I did <nostalgia mode>when I was
> 10 years old on the Apple IIe</nostalgia mode>
> which requires line numbers.
Or the BBC Micro, or the commodore 64, or the
Spectrum or the <Insert ancient computer here>.
> Perl doesn't need them.
But you can have them if you want them:
#!/usr/bin/perl -w
while (<DATA>) {
if (/^(\d+) (.*)$/) {
$code{$1} = $2 . ';';
} else {
next if /^\s*$/;
warn "Error, invalid line:\n";
die "$_\n";
}
}
$code .= $code{$_} foreach (sort keys %code);
eval $code;
__DATA__
10 print "Enter a word, then press return: "
20 $value = <>
30 print "You entered:" . $value
__END__
Jonthan Paton
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