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Kevin Ryde on Sun, 22 Nov 2015 07:08:32 +0100
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- To: pari-users@pari.math.u-bordeaux.fr
- Subject: Re: Vector of args
- From: Kevin Ryde <user42_kevin@yahoo.com.au>
- Date: Sun, 22 Nov 2015 17:02:41 +1100
- Delivery-date: Sun, 22 Nov 2015 07:08:32 +0100
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- In-reply-to: <20151112131422.GA13589@yellowpig> (Bill Allombert's message of "Thu, 12 Nov 2015 14:14:22 +0100")
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Bill Allombert <Bill.Allombert@math.u-bordeaux.fr> writes:
>
> On Wed, Nov 11, 2015 at 09:18:22AM +0100, Loïc Grenié wrote:
>> f)? In that case
>> call(g,concat([a,b],c)) would also work with the version we propose.
>> Inside the
>> variadic you know it is variadic, outside you may or may not know.
>
> That would be both awkward and inefficient, since GP will need to undo the
> concat operation.
A printf is unlikely to be many args of course. If that case is
important I still like a vstrprintf for efficiency or clarity (cut out
the middle man, and some use from C). Or a yet further way would be a
flag in call to select vector ending with a vector variant, so args can
be presented unambiguously but whichever fashion the caller likes best.
In any case I notice a small seg fault presently (with a little irony
that it's by a form I would like to make a call ... :-)
call(Strprintf, ["%d", 10])
=>
*** at top-level: call(Strprintf,["%d"
*** ^--------------------
*** in function call: Strprintf
*** ^---------
*** Strprintf: bug in PARI/GP (Segmentation Fault), please report.