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[80.12.242.123]) by mx.google.com with ESMTPS id xb7si25281409wjb.187.2016.02.13.01.18.23 for (version=TLS1 cipher=AES128-SHA bits=128/128); Sat, 13 Feb 2016 01:18:23 -0800 (PST) Received-SPF: neutral (google.com: 80.12.242.123 is neither permitted nor denied by best guess record for domain of vicente.botet@wanadoo.fr) client-ip=80.12.242.123; Original-Received: from new-host.home ([86.214.221.89]) by mwinf5d36 with ME id HlJP1s0091wL8VA03lJPMd; Sat, 13 Feb 2016 10:18:23 +0100 X-ME-Helo: new-host.home X-ME-Auth: dmljZW50ZS5ib3RldEB3YW5hZG9vLmZy X-ME-Date: Sat, 13 Feb 2016 10:18:23 +0100 X-ME-IP: 86.214.221.89 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 In-Reply-To: X-Original-Sender: vicente.botet@wanadoo.fr X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 80.12.242.123 is neither permitted nor denied by best guess record for domain of vicente.botet@wanadoo.fr) smtp.mailfrom=vicente.botet@wanadoo.fr Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:24345 Archived-At: This is a multi-part message in MIME format. --------------040705010301040704070701 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Le 13/02/2016 09:44, Oliver Kowalke a =C3=A9crit : > 016-02-13 1:28 GMT+01:00 Arthur O'Dwyer >: > > (Also, I'm assuming that Oliver made some typos in his original > post =E2=80=94 notice I've flipped the "tpl" and "tpl1" in the second= line > above.) > > > correct I'm confused. Arthur's was not doing an extraction but an insertion in=20 this case | tail(tpl)=3Dtpl1;// Python: tpl[1:] =3D tpl1| I believed you were talking of extraction. > > Also, of course, head(x) should logically return get<0>(x), not > some weird synonym for reverse(tail(reverse(x))). > > > head(x) should return the part from the source tuple's head that fits=20 > into tuple x, same applies to tail(x) > > But that's just poor naming. The underlying operation here is > either "splice" > > > I'm only interested in the functionality, not in the naming. One of my=20 > project requires such functionality and I was wondering that neither=20 > the standard > provides such manipulators nor could I find a proposal. > > tuple ~... and tu|ple [:] require a language modification - but I need=20 > a solution now; so I've written head()/tail() (even if the naming is=20 > not perfect).| > I agree that we should first think in terms of the desired functionality=20 and if it is worth having it in the standard. If some additional=20 language features make this easier great. I believe that you would need to describe more precisely what you want=20 these functions to do. Vicente --=20 ---=20 You received this message because you are subscribed to the Google Groups "= ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. Visit this group at https://groups.google.com/a/isocpp.org/group/std-propos= als/. --------------040705010301040704070701 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Le 13/02/2016 09:44, Oliver Kowalke a =C3=A9crit=C2=A0:
016-02-13 1:28 GMT+01:00 Arthur O'Dwyer <arthur.j.odwyer@gmail.com>:
(Also, I'm assuming that Oliver made some typos in his original post =E2=80=94 notice I've flipped the "tpl" and "tpl1" in the second line above.)

correct
I'm confused. Arthur's was not doing an extraction but an insertion in this case

=C2=A0 =C2=A0 tail(tpl) =3D tpl1; =C2=A0 =C2=A0<= /span>// Python: tpl[1:] =3D tpl1

I believed you were talking of extraction.
=C2=A0
Also, of course, head(x) should logically return get<0>(x), not some weird synonym for reverse(tail(reverse(x))).

head(x) should return the part from the source tuple's head that fits into tuple x, same applies to tail(x)
=C2=A0
But that's just poor naming. The underlying operation here is either "splice"

I'm only interested in the functionality, not in the naming. One of my project requires such functionality and I was wondering that neither the standard
provides such manipulators nor could I find a proposal.

tuple ~... and tuple [:] require a language modification - but I need a solution now; so I've written head()/tail() (even if the naming is not perfect).

I agree that we should first think in terms of the desired functionality and if it is worth having it in the standard. If some additional language features make this easier great.
I believe that you would need to describe more precisely what you want these functions to do.

Vicente

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