Function first_not_in 

pub fn first_not_in(s: &[u8], class: Class) -> Option<usize>

The index of the first byte of s outside class.

Examples

use parse_net::{scan::first_not_in, class::Class};

assert_eq!(first_not_in(b"gzip, br", Class::TCHAR), Some(4));
assert_eq!(first_not_in(b"gzip", Class::TCHAR), None);