--- Michael Kelly <[EMAIL PROTECTED]> wrote: <snip> > Only and's short-circuit. Or's test every argument by necessity. <snip>
Mike, In just about every Perl script that has to read from or write to a file, you will see a line similar to the following: open (MYFILE, "myfile.txt") or die "Can't open myfile.txt: $!\n"; This is an conditional statement using an "or". If your statement was correct, both the open clause and the die clause would be executed and the program would never get beyond this point. But what actually happens in most instances is that the open statement succeeds and returns a value that evaluates to true. An or statement is true if at least one of its clauses is true. So if the open clause is true, Perl does not bother checking the other clause, the die statement is skipped over, and the program continues running. RobR __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
