rust/tests/compile-fail/eta.rs

40 lines
938 B
Rust
Executable File

#![feature(plugin)]
#![plugin(clippy)]
#![allow(unknown_lints, unused)]
#![deny(redundant_closure)]
fn main() {
let a = Some(1u8).map(|a| foo(a));
//~^ ERROR redundant closure found. Consider using `foo` in its place
meta(|a| foo(a));
//~^ ERROR redundant closure found. Consider using `foo` in its place
let c = Some(1u8).map(|a| {1+2; foo}(a));
//~^ ERROR redundant closure found. Consider using `{1+2; foo}` in its place
let d = Some(1u8).map(|a| foo((|b| foo2(b))(a))); //is adjusted?
all(&[1, 2, 3], &&2, |x, y| below(x, y)); //is adjusted
unsafe {
Some(1u8).map(|a| unsafe_fn(a)); // unsafe fn
}
}
fn meta<F>(f: F) where F: Fn(u8) {
f(1u8)
}
fn foo(_: u8) {
}
fn foo2(_: u8) -> u8 {
1u8
}
fn all<X, F>(x: &[X], y: &X, f: F) -> bool
where F: Fn(&X, &X) -> bool {
x.iter().all(|e| f(e, y))
}
fn below(x: &u8, y: &u8) -> bool { x < y }
unsafe fn unsafe_fn(_: u8) { }