int x = auto

[Dom Disc]

On Wednesday, 22 March 2023 at 08:31:46 UTC, Ogi wrote:
> Suggestion: allow implicit default-initialization using `type x 
> = auto` syntax. This is the same as `type x = type.init` and 
> `type x = type()`.
>
> This will be especially handy for functions with optional 
> parameters.
>
> Before:
> ```D
> void fun(
>         int x = 0,
>         double y = double.nan,
>         bool flag = false,
>         string str = "",
>         void* ptr = null,
>         SomeStruct t = SomeStruct(),
>         int[4] arr = [0, 0, 0, 0])
> ```

After:
```D
void fun(
    auto x = int.init,
    auto y = double.init,
    auto flag = bool.init,
    auto str = string.init,
    auto ptr = void*.init, // ok, not sure if this works
    auto t = SomeStruct.init,
    auto arr = int[4].init; // if this doesn't work, we should fix 
it
```

So, where is the problem?