Re (tilly) 1: Checking for defined-ness for a list

if (! grep defined($_), @hash{ qw(A B C) } ) {
  # etc
}
[download]

UPDATE
merlyn is exactly right. Why you shouldn't try to answer with untested code while racing back to chatter...

Comment on Re (tilly) 1: Checking for defined-ness for a list Download Code

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Re: Re (tilly) 1: Checking for defined-ness for a list by merlyn (Sage) on Jul 25, 2001 at 20:15 UTC
I think demorgan got the best of you here. This is "all are undefined", not "at least one undefined". You want: `if (grep !defined($_), @hash{ qw(A B C) }) { # at least one undefined }` [download] -- Randal L. Schwartz, Perl hacker	[reply] [d/l]