Function combine::parser::char::lower

pub fn lower<I>() -> Lower<I> where
    I: Stream<Item = char>,
    I::Error: ParseError<I::Item, I::Range, I::Position>, 

Parses an lowercase letter according to std::char::is_lowercase.

use combine::Parser;
use combine::parser::char::lower;
assert_eq!(lower().parse("a"), Ok(('a', "")));
assert!(lower().parse("A").is_err());