[][src]Function syntax::ext::tt::macro_parser::create_matches

Important traits for Vec<u8>
fn create_matches(len: usize) -> Vec<Rc<Vec<NamedMatch>>>
🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Initialize len empty shared Vecs to be used to store matches of metavars.