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//@ edition: 2024
//@ run-pass
#![feature(gen_blocks)]
#![feature(optimize_attribute)]
#![feature(stmt_expr_attributes)]
#![feature(async_iterator)]
#![allow(dead_code)]
// make sure that other attributes e.g. `optimize` can be applied to gen blocks and functions
fn main() { }
fn optimize_gen_block() -> impl Iterator<Item = ()> {
#[optimize(speed)]
gen { yield (); }
}
#[optimize(speed)]
gen fn optimize_gen_fn() -> i32 {
yield 1;
yield 2;
yield 3;
}
#[optimize(speed)]
async gen fn optimize_async_gen_fn() -> i32 {
yield 1;
yield 2;
yield 3;
}
use std::async_iter::AsyncIterator;
pub fn deduce() -> impl AsyncIterator<Item = ()> {
#[optimize(size)]
async gen {
yield ();
}
}
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