Is there a way to get the name of the current function?

[ryuukk_]

On Tuesday, 7 March 2023 at 22:11:49 UTC, rempas wrote:
> For example, in the given code:
>
> ```d
> void my_function() {
>   import std.stdio;
>
>   writeln("The name of the function is: ", 
> <fn_name_macro_or_something>);
> }
> ```
>
> Is there something to put in the place of 
> `<fn_name_macro_or_something>` to get the name of the function?


```
import std.stdio;
void main()
{
     writeln("file:        ", __FILE__);
     writeln("function is: ", __FUNCTION__);
     writeln("function is: ", __PRETTY_FUNCTION__ );
}

$ dmd -run tester.d
file:        tester.d
function is: tester.main
function is: void tester.main()
```

You can even get the calling function name:

```
import std.stdio;
void main()
{
     log("hello");
}


void log(string msg, string file = __FILE__, int line = __LINE__, 
string fn = __PRETTY_FUNCTION__)
{
     writeln(file,":",line,"|", fn,"|> ", msg);
}
```

https://dlang.org/spec/expression.html#specialkeywords