Function parser_compose::first_utf8_scalar

pub fn first_utf8_scalar(input: &str) -> Option<(&str, &str)>

A parser that recognizes the first unicode scalar value at the start of a string slice.

A unicode scalar value is not always what you might consider a “character”. This function will output the first thing that rust considers a char.

use parser_compose::{Parser, first_utf8_scalar};

let msg = "👻Boo";

let (value, rest) = first_utf8_scalar(msg).unwrap();

assert_eq!(value, "👻");