Assist proposal: generate a as_variant() method for enum

[bnjjj]

Inspired by this assist #7562 I would like add an assist to generate method as_variant_name() a pattern I often use to quickly extract a variant from an enum.
Example:

enum Number {
    I64(i64),
    F64(f64),
}

output:

enum Number {
    I64(i64),
    F64(f64),
}

impl Number {
    pub fn as_i64(&self) -> Option<&i64> {
        // ....
    }
}

If you think it could be useful for developers let me know I would be happy to implement this.

[Veykril]

Sounds like a good addition to me as it is closely related to the is_ version, and pretty useful to have in general in my opinion. Reminds me that I still wish there was a matches! like macro in std that does exactly this 😄 Could probably live in the same module as well?

[numero-744]

Reminds me that I still wish there was a matches! like macro in std that does exactly this smile Could probably live in the same module as well?

This is discussed here: rust-lang/rfcs#2960