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Re: Query Parameters

Tony Cook
December 3, 2019 04:59
Re: Query Parameters
Message ID:
On Mon, Dec 02, 2019 at 02:08:59PM +0000, Zefram via perl5-porters wrote:
> Dave Mitchell wrote:
> >    ?$x       peek ahead to the next arg
> >    ??$x      peek ahead and see if there is a next arg
> Poor Huffman coding: the latter will be used more often.  I think the
> peek-ahead cases should (all, consistently) have a second character after
> the "?" and before the sigil, and the predicate case should only have one
> "?".

I too think the shorter version should be the predicate rather than
the peek ahead.

> >They cannot be a placeholder: i.e. these aren't legal: ??$, ?$, ?@, ?%.
> Seems to me that those should be legal no-ops.  Except for the hash one,
> which isn't even a no-op, because it would enforce even parity of the
> remaining argument list.

I'd rather they were illegal if they're no-ops, since we might find a
later use for the syntax that isn't a no-op.

That said all this punctuation might be a bit too much, with perl's
reputation as a line-noise language being further cemented.

But COBOL lies down the other road.

Tony Perl Programming lists via nntp and http.
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