Re: [PATCH RESEND] rust: transmute: add `from_bytes_prefix` family of methods

[Alexandre Courbot]

On Sat Nov 1, 2025 at 10:52 PM JST, Danilo Krummrich wrote:
> On Sat Nov 1, 2025 at 2:41 PM CET, Alexandre Courbot wrote:
>> The `from_bytes*` family of functions expect a slice of the exact same
>> size as the requested type. This can be sometimes cumbersome for callers
>> that deal with dynamic stream of data that needs to be manually cut
>> before each invocation of `from_bytes`.
>>
>> To simplify such callers, introduce a new `from_bytes*_prefix` family of
>> methods, which split the input slice at the index required for the
>> equivalent `from_bytes` method to succeed, and return its result
>> alongside with the remainder of the slice.
>>
>> This design is inspired by zerocopy's `try_*_from_prefix` family of
>> methods.
>>
>> Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
>
> Reviewed-by: Danilo Krummrich <dakr@xxxxxxxxxx>
>
> One nit below:
>
>> +    /// Converts the beginning of `bytes` to a reference to `Self`.
>> +    ///
>> +    /// This method is similar to [`Self::from_bytes`], with the difference that `bytes` does not
>> +    /// need to be the same size of `Self` - the appropriate portion is cut from the beginning of
>> +    /// `bytes`, and the remainder returned alongside the result.
>
> Maybe "alongside `&Self`"? "alongside the result" sounds a bit like the method
> would return `Result<&Self>, &[u8]`.

Thanks, that remove the ambiguity indeed!