Hi, I was trying to convert string to f64 and I try to seperate reason for parse error.

match value.parse() {
    Ok(value) => Ok(value),
    Err(source) => match source {
        // and here is problem, because I can't get error kind.
    }
}

Looking at source code of f64 parse I see

pub struct ParseFloatError {
    kind: FloatErrorKind,
}

enum FloatErrorKind {
    Empty,
    Invalid,
}

ParseFloatError is public, but kind is private. Even FloatErrorKind is private.
Here are no way to get kind from error, not compare it with FloatErrorKind

Why is it so?
I think error kinds should be public, so user could check which error he got.

One of reasons to check would be error translation from English to other langues.

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