float init 0 request

[Walter Bright]

On 8/20/2026 2:46 PM, Steven Schveighoffer wrote:
> Given the first statement's behavior, you would expect `dchar` type 
> to mean *re-encode*, as this is what it is doing (this is a special 
> compiler-generated decoding feature).

The compiler generated decoding feature would be:

```d
foreach (dchar d; "Über");
```

The `"Über".byCodeUnit` is not recognized as special by the compiler, other than 
being a range. It does not cause foreach to re-encode.

"Über".byCodeUnit` returns a type that is a code unit matching the encoding of 
its argument, in this case a UTF-8 string, so a `char` is returned. `char` is 
implicitly convertible to `dchar`.

> But any char element type other than char arrays int promotes.

It promotes to the type of foreach's first argument type, in this case, dchar.


> Subtle changes in meaning for the same syntax are bug factories.

Yes, but the syntax is different:

```d
foreach (dchar d; "Über")
foreach(dchar d; "Über".byCodeUnit) // <=== different!
foreach(dchar d; "Über".byDchar) // the droid you are looking for
```


> This is why I really like `~` being the concat operator instead of `+`.

I really like it, too!


> If integer promotion to dchar didn't work, then you would know immediately what 
> the problem is.

char promotes to dchar.