rust/tests/ui/functions-closures/closure-inference.rs

//@ run-pass
#![allow(unused_braces)]

fn foo(i: isize) -> isize { i + 1 }

fn apply<A, F>(f: F, v: A) -> A where F: FnOnce(A) -> A { f(v) }

pub fn main() {
    let f = {|i| foo(i)};
    assert_eq!(apply(f, 2), 3);
}
Add `// run-pass` annotations to all the tests under `ui/run-pass/`. (I may have accidentally added it to some auxilliary crates as well; my emacs-macro-based methodology was pretty crude.) 2018-08-30 12:18:55 +00:00			`//@ run-pass`
update tests 2020-03-27 20:56:19 +00:00			`#![allow(unused_braces)]`
rustdoc: Replace no-pretty-expanded with pretty-expanded Now that features must be declared expanded source often does not compile. This adds 'pretty-expanded' to a bunch of test cases that still work. 2015-03-22 20:13:15 +00:00
Teach project to unify the return type even if a precise match is not possible. There is some amount of duplication as a result (similar to select) -- I am not happy about this but not sure how to fix it without deeper rewrites. 2015-02-03 11:12:43 +00:00			`fn foo(i: isize) -> isize { i + 1 }`
new test showing off the improved inference 2012-02-05 17:56:18 +00:00
fix rpass tests 2015-01-02 22:32:54 +00:00			`fn apply<A, F>(f: F, v: A) -> A where F: FnOnce(A) -> A { f(v) }`
new test showing off the improved inference 2012-02-05 17:56:18 +00:00
check-fast fallout from removing export, r=burningtree 2013-02-02 03:43:17 +00:00			`pub fn main() {`
Allow closure arguments types to unify even if we can't fully resolve a trait obligation. Partial fix for #16440 -- closure return types are not handled yet. 2015-02-02 16:52:08 +00:00			`let f = {\|i\| foo(i)};`
Use assert_eq! rather than assert! where possible 2013-05-19 02:02:45 +00:00			`assert_eq!(apply(f, 2), 3);`
new test showing off the improved inference 2012-02-05 17:56:18 +00:00			`}`