CODEWITHSUNDEEP
rust
WillEngler
WillEngler

Reputation: 795

Getting sequence of bytes (u8) from a char

I need to examine the bytes that make up a character. I know it is possible to do so by going from a char to a String to a &[u8] like so:

let multi_byte_char = 'á';
let little_string = multi_byte_char.to_string();
let byte_slice = little_string.as_bytes();

for byte in byte_slice {
    println!("{}", byte); // Prints "195, 161"
}

Is there a way to go straight from a char to a &[u8]? I can't find anything in the char documentation. Another option is to mem::transmute from a char to a [u8; 4], but using unsafe code here seems silly.

EDIT: There is an unstable encode_utf8 method on char.

Upvotes: 10

Views: 18545

Answers (1)

Jorge Israel Peña
Jorge Israel Peña

Reputation: 38576

It seems to me like what you want is encode_utf8, but that is also unstable. You can see its implementation here.

Upvotes: 5

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