length's type.

[mw]

On Thursday, 8 February 2024 at 05:56:57 UTC, Kevin Bailey wrote:
> I don't think it's productive to compare the behavior to C. C 
> is now 50 years old. One would hope that D has learned a few 
> things in that time.
>
> How many times does the following loop print? I ran into this 
> twice doing the AoC exercises. It would be nice if it Just 
> Worked.
> ```
> import std.stdio;
>
> int main()
> {
>   char[] something = ['a', 'b', 'c'];
>
>   for (auto i = -1; i < something.length; ++i)
>         writeln("less than");
>
>   return 0;
> }
> ```


This is horrible, even if you use `int i`, it still won't work as 
you have thought (ok, I thought):


```
import std.stdio;

int main()
{
   char[] something = ['a', 'b', 'c'];

   for (int i = -1; i < something.length; ++i)
         writeln("less than");

   writeln("done");
   return 0;
}

```

it will just output
```
done
```