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