Function syntax_ext::concat::expand_syntax_ext [−][src]
pub fn expand_syntax_ext(
cx: &mut ExtCtxt,
sp: Span,
tts: &[TokenTree]
) -> Box<MacResult + 'static>
🔬 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?