19 lines
575 B
Rust
19 lines
575 B
Rust
extern crate autocfg;
|
|
|
|
fn main() {
|
|
// Normally, cargo will set `OUT_DIR` for build scripts.
|
|
let ac = autocfg::AutoCfg::with_dir("target").unwrap();
|
|
|
|
// When this feature was stabilized, it also renamed the method to
|
|
// `chunk_by`, so it's important to *use* the feature in your probe.
|
|
let code = r#"
|
|
#![feature(slice_group_by)]
|
|
pub fn probe(slice: &[i32]) -> impl Iterator<Item = &[i32]> {
|
|
slice.group_by(|a, b| a == b)
|
|
}
|
|
"#;
|
|
if ac.probe_raw(code).is_ok() {
|
|
autocfg::emit("has_slice_group_by");
|
|
}
|
|
}
|