| //@ known-bug: #112201 | |
| pub fn compose( | |
| f1: impl FnOnce(f64) -> f64 + Clone, | |
| f2: impl FnOnce(f64) -> f64 + Clone, | |
| ) -> impl FnOnce(f64) -> f64 + Clone { | |
| move |x| f1(f2(x)) | |
| } | |
| fn repeat_helper( | |
| f: impl FnOnce(f64) -> f64 + Clone, | |
| res: impl FnOnce(f64) -> f64 + Clone, | |
| times: usize, | |
| ) -> impl FnOnce(f64) -> f64 + Clone { | |
| return res; | |
| repeat_helper(f.clone(), compose(f, res), times - 1) | |
| } | |
| fn main() {} |