I thought it was just things in the global namespace with a leading underscore (and anything with a double underscore anywhere) that were reserved for compiler/STL use, so member variables would be fine? Personally trailing underscores are far from aesthetically pleasing to my eyes

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, October 7th, 2021 at 4:04 AM, Nikolay Mihaylov via Std-Proposals <std-proposals_at_[hidden]> wrote:

> My 5 cents about the thing nobody mentions.
>
> Although many programming languages uses underscore for private members, in C++ and probably in C,
> you are not allow to do anything with front underscore. Yes, compiler will accept it and it will be compiled,
> but these are reserved for system library implementation.
>
> So:
>
> class A{
> int _a;
> int _b;
> public:
> // ...
> }
>
> this is not allowed.
>
> I personally use this:
>
> class A{
> int a_;
> int b_;
> public:
> // ...
> }
>
> Regards
>
> On Thu, Oct 7, 2021 at 10:56 AM Gašper Ažman via Std-Proposals <std-proposals_at_[hidden]> wrote:
>
>> As a note, deducing this is in c++23.
>>
>> On Thu, Oct 7, 2021, 04:16 Phil Bouchard via Std-Proposals <std-proposals_at_[hidden]> wrote:
>>
>>> On 10/6/21 3:56 PM, Keenan Horrigan via Std-Proposals wrote:
>>>
>>>> I would think that [the "Deducing this" paper](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p0847r7.html) would supersede this idea, as methods with "object parameters" are currently proposed to disallow using the this keyword or implicitly looked up member variables within them, so a "var" parameter would be unambiguously the parameter and you'd have to access the member variable through something like "self.var".
>>>
>>> Oh yeah I remember that proposal. I was suggesting an alternative but the conversation died in the egg for some reason and I never followed up:
>>>
>>> https://lists.isocpp.org/std-proposals/2020/03/1215.php
>>>
>>> Same idea at its root but different syntax.
>>>
>>>> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>>>> On Wednesday, October 6th, 2021 at 1:26 PM, Phil Bouchard via Std-Proposals [<std-proposals_at_[hidden]>](mailto:std-proposals_at_[hidden]) wrote:
>>>>
>>>>> Yeah I agree.
>>>>>
>>>>> On 10/6/21 12:26 PM, Lee Howes wrote:
>>>>>
>>>>>> Seems a bit much to make a language change just to allow member shadowing doesn't it? The following is no more typing heavy:
>>>>>>
>>>>>> struct A
>>>>>>
>>>>>> {
>>>>>>
>>>>>> int _var;
>>>>>>
>>>>>> void foo(int & var);
>>>>>>
>>>>>> };
>>>>>>
>>>>>> void A::foo(int & var)
>>>>>>
>>>>>> {
>>>>>>
>>>>>> var = 1; // changes parameter
>>>>>>
>>>>>> _var = 2; // changes member variable
>>>>>>
>>>>>> }
>>>>>>
>>>>>> On Wed, 6 Oct 2021 at 09:04, Phil Bouchard via Std-Proposals <std-proposals_at_[hidden]> wrote:
>>>>>>
>>>>>>> Greetings,
>>>>>>>
>>>>>>> This is just a minor syntactic adjustment but could fix a very long lasted problem.
>>>>>>>
>>>>>>> Suppose you have:
>>>>>>>
>>>>>>> struct A
>>>>>>>
>>>>>>> {
>>>>>>>
>>>>>>> int var;
>>>>>>>
>>>>>>> void foo(int & var);
>>>>>>>
>>>>>>> };
>>>>>>>
>>>>>>> What I suggest is to add a prefix that could replace: "this->"
>>>>>>>
>>>>>>> void A::foo(int & var)
>>>>>>>
>>>>>>> {
>>>>>>>
>>>>>>> var = 1; // changes parameter
>>>>>>>
>>>>>>> .var = 2; // changes member variable
>>>>>>>
>>>>>>> }
>>>>>>>
>>>>>>> Regards,
>>>>>>>
>>>>>>> --
>>>>>>>
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>>> --
>>>
>>> [Logo](https://www.fornux.com/)
>>> Phil Bouchard [facebook icon](https://www.linkedin.com/in/phil-bouchard-5723a910/)
>>> CTO
>>> T: (819) 328-4743
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