2b92962aa2
- Make `extern fn()` assignable to any closure type, rather than a subtype. - Remove unused int_ty_set and float_ty_set - Refactor variable unification and make it more DRY - Do fn sub/lub/glb on the level of fn_sig - Rename infer::to_str::ToStr to infer::to_str::InferStr - Capitalize names of various types - Correct hashing of FnMeta - Convert various records-of-fns into structs-of-fns. This is both eliminating use of deprecated features and more forwards compatible with fn reform. r=pcwalton
23 lines
675 B
Rust
23 lines
675 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
fn plus_one(f: fn() -> int) -> int {
|
|
return f() + 1;
|
|
}
|
|
|
|
fn ret_plus_one() -> extern fn(fn() -> int) -> int {
|
|
return plus_one;
|
|
}
|
|
|
|
fn main() {
|
|
let z = do (ret_plus_one()) || { 2 };
|
|
assert z == 3;
|
|
}
|