Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation

Re: Re: Re (tilly) 4: Exegesis 2 - Perl 6

by danger (Priest)
on May 16, 2001 at 20:31 UTC ( #80945=note: print w/replies, xml ) Need Help??

in reply to Re: Re (tilly) 4: Exegesis 2 - Perl 6
in thread Exegesis 2 - Perl 6

Well, the biggest problem with using + for concatenate in Perl is that it introduces ambiguity. Consider:

print "Enter a number: "; chomp(my $num1 = <STDIN>); print "Enter another number: "; chomp(my $num2 = <STDIN>); print "$num1 + $num2 is ", $num1 + $num2, "\n";

Right now, the + means numerical addition so Perl converts those strings read in from STDIN to numbers, adds them, and converts the result back to a string to print it. In other words, now the operator (+ or .) imposes context (numeric or string) on its operands. Would you prefer having to do explicit type declarations or casting to provide context to the operator?

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://80945]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others pondering the Monastery: (5)
As of 2018-03-24 21:48 GMT
Find Nodes?
    Voting Booth?
    When I think of a mole I think of:

    Results (299 votes). Check out past polls.