Get function argument name?

[Timothee Cour]

`printName(alias var)()` is not a great solution, eg: doesn't work
with expressions, doesn't work with variadics, introduces template
bloat.

https://github.com/dlang/dmd/pull/7821 introduces
__traits(getCallerSource, symbol) which will allow what you want.

On Sun, Mar 4, 2018 at 1:53 PM, bauss via Digitalmars-d-learn
<digitalmars-d-learn at puremagic.com> wrote:
> On Sunday, 4 March 2018 at 21:48:53 UTC, JN wrote:
>>
>> On Sunday, 4 March 2018 at 21:12:44 UTC, arturg wrote:
>>>
>>>
>>> you can pass it by alias:
>>>
>>> import std.stdio;
>>>
>>> void main(string[] args)
>>> {
>>>     int x;
>>>     printName!(x);
>>> }
>>>
>>> void printName(alias var)()
>>> {
>>>     writeln(__traits(identifier, var), " ", var);
>>> }
>>
>>
>> Well, it works. But I am confused now, why. Isn't alias only for types
>> (like a typedef)? Why can we use it for variable here?
>
>
> Because it is what it is, an alias. Not a type.
>
> It can be a type, expression or member/variable.