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Re: Re: Re: Re: Context aware functions - best practices?

by sauoq (Abbot)
on Jan 15, 2003 at 22:56 UTC ( #227264=note: print w/replies, xml ) Need Help??

in reply to Re: Re: Re: Context aware functions - best practices?
in thread Context aware functions - best practices?

That's obviously a list-context function, and you don't expect it to do anything useful at all in scalar context.

You make a good point here. Some functions just shouldn't be expected to do anything useful in scalar context. A nice idiom for writing such functions is to start them with wantarray or return undef.

"My two cents aren't worth a dime.";

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Re^5: Context aware functions - best practices?
by Aristotle (Chancellor) on Jan 15, 2003 at 23:55 UTC
    Or maybe just return unless wantarray; because return is smart enough to provide undef by itself in scalar context. :)

    Makeshifts last the longest.

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[1nickt]: Corion I am trying to keep an open mind :-) Or at least, go with the flow. marto yes I saw som photos of lorries overturned on country roads, and wondered why they would have been driving fast enough to have that happen!

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