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Re: Design decisions

From "Joe." <antelope3@news.net>
Newsgroups comp.lang.c
Subject Re: Design decisions
Date 2012-06-25 00:40 -0600
Organization Aioe.org NNTP Server
Message-ID <js90q2$6uh$1@speranza.aioe.org> (permalink)
References <jrvvlb$8k1$1@speranza.aioe.org> <js025k$hjm$1@dont-email.me> <4FE3A3AB.7080004@verizon.net>

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"James Kuyper" <jameskuyper@verizon.net> wrote in message 
news:4FE3A3AB.7080004@verizon.net...
> On 06/21/2012 05:02 PM, BartC wrote:
>> "jacob navia" <jacob@spamsink.net> wrote in message
>> news:jrvvlb$8k1$1@speranza.aioe.org...
>>> In the new "templated" form of the containers library I have now that 
>>> all
>>> data retrieving functions return the data directly:
>>>
>>> int (*GetElement)(intList *l,size_t idx);
>>>
>>> The problem is that it is not possible to return an error
>>> with this configuration: Since the return value is an
>>> int, any error code could be actually some data!!
>>>
>>> The solution is to return a pointer to the data and NULL
>>> if there is an error, as the other functions of the library do.
>> ...
>>> What do you think?
>>
>> How does C++ deal with it?
>
> Of the C++ standard containers, only basic_string, array, deque, and
> vector containers have a close equivalent of GetElement. The other
> container types do not provide int-indexed access. The ones that do,
> each have two GetElement equivalents. If Container is one of those
> templates, then given the declaration:
>
> Container<T> container;
>
> the expressions container[idx] and container.at(idx) both have the
> semantics of *(container.begin()+n). If idx is out of range,
> container[idx] has undefined behavior; container.at(idx) throws
> std::out_of_range.

Pfft. An "authority" on C++? Apparently you are milking the fact that you 
know a lot about a nothing, that nothing being C++? I've been programming in 
C# for 3 years and know it is superior to C++, or I may be lying.

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Design decisions jacob navia <jacob@spamsink.net> - 2012-06-21 22:19 +0200
  Re: Design decisions Andrew Cooper <amc96@cam.ac.uk> - 2012-06-21 21:43 +0100
  Re: Design decisions "BartC" <bc@freeuk.com> - 2012-06-21 22:02 +0100
    Re: Design decisions Gareth Owen <gwowen@gmail.com> - 2012-06-21 23:23 +0100
      Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-22 09:12 +0200
        Re: Design decisions Ian Collins <ian-news@hotmail.com> - 2012-06-22 19:44 +1200
          Re: Design decisions "Joe." <antelope3@news.net> - 2012-06-25 00:32 -0600
        Re: Design decisions gwowen <gwowen@gmail.com> - 2012-06-22 01:00 -0700
          Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-22 10:08 +0200
            Re: Design decisions Gareth Owen <gwowen@gmail.com> - 2012-06-22 17:18 +0100
              Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-22 18:27 +0200
                Re: Design decisions Ian Collins <ian-news@hotmail.com> - 2012-06-23 08:44 +1200
                Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-22 23:58 +0200
                Re: Design decisions Ian Collins <ian-news@hotmail.com> - 2012-06-23 10:21 +1200
                Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-23 02:13 +0200
                Re: Design decisions Ian Collins <ian-news@hotmail.com> - 2012-06-23 12:59 +1200
                Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-23 11:03 +0200
                Re: Design decisions Ian Collins <ian-news@hotmail.com> - 2012-06-23 21:52 +1200
                Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-23 12:32 +0200
                Re: Design decisions Gareth Owen <gwowen@gmail.com> - 2012-06-23 13:54 +0100
            Re: Design decisions "Joe." <antelope3@news.net> - 2012-06-25 00:36 -0600
          Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-22 10:42 +0200
            Re: Design decisions Gareth Owen <gwowen@gmail.com> - 2012-06-22 17:18 +0100
            Re: Design decisions jacob navia <jacob@spamsink.net> - 2012-06-24 18:32 +0200
    Re: Design decisions James Kuyper <jameskuyper@verizon.net> - 2012-06-21 18:43 -0400
      Re: Design decisions "Joe." <antelope3@news.net> - 2012-06-25 00:40 -0600
    Re: Design decisions "Joe." <antelope3@news.net> - 2012-06-25 00:28 -0600
  Re: Design decisions "io_x" <a@b.c.invalid> - 2012-06-22 08:35 +0200
  Re: Design decisions Neil Cerutti <neilc@norwich.edu> - 2012-06-22 12:40 +0000
    Re: Design decisions gwowen <gwowen@gmail.com> - 2012-06-22 06:01 -0700
      Re: Design decisions Neil Cerutti <neilc@norwich.edu> - 2012-06-22 14:26 +0000
    Re: Design decisions Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-06-22 14:01 +0100
    Re: Design decisions David Resnick <lndresnick@gmail.com> - 2012-06-22 06:13 -0700
  Re: Design decisions Jens Gustedt <jens.gustedt@loria.fr> - 2012-06-22 19:05 +0200
  Re: Design decisions "Joe." <antelope3@news.net> - 2012-06-25 00:27 -0600

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