[HideousKojima]

You can in JS/TS and Python. Technically you could even do it in a language with a fairly strong type system like C# or Java by casting to object or dynamic, though the code using the cast object after that will probably be very unidiomatic.

[Thaxll]

Can't you cast to any in Rust as well?

[sondr3]

To expand on the others, unlike in TS/JS, Python etc you can cast to the `Any`-trait but cannot use it as if it is any value, you need to convert it to the type you want and then handle the errors. A function that accepts `&str` will never accept a `Any` value, unlike in TS where you can override the type checker using `as`. Worth noting that TypeScript's type system is unsound [0] too.

[0]: https://www.typescriptlang.org/docs/handbook/type-compatibil...

[fzzzy]

No. Rust does not have the equivalent of Object or void *.

[vladvasiliu]

There's the Any trait [0]. Not sure if this is exactly like void* in C, but this doesn't look particularly ergonomic to use.

[0] https://doc.rust-lang.org/std/any/index.html