Feature request: Automatically convert String to &str when required.

[sandeep-datta]

Please consider automatically converting Strings to string slices when a string is passed into a string slice context. Please pardon my total lack of experience with rust but I think this shouldn't introduce any bugs in the program since a string slice is a more restricted type than a String. Any thoughts?

Example:

fn takes_slice(slice: &str) {
    println!("Got: {}", slice);
}

fn main() {
    let s = "Hello".to_string();
    takes_slice(s);
}

instead of ...

fn main() {
    let s = "Hello".to_string();
    takes_slice(s.as_slice());
}

May be we can provide a conversion operator like C++ does?

[alexcrichton]

Changes such as this would require an RFC, and you may be interested in rust-lang/rfcs#241 which would enable use cases almost like this.

[anshin]

You may also be interested in rust-lang/rfcs#198.

[sandeep-datta]

Thanks guys. I am new here, will browse through the RFCs.