56290a0044
This commit is an implementation of [RFC 503][rfc] which is a stabilization story for the prelude. Most of the RFC was directly applied, removing reexports. Some reexports are kept around, however: * `range` remains until range syntax has landed to reduce churn. * `Path` and `GenericPath` remain until path reform lands. This is done to prevent many imports of `GenericPath` which will soon be removed. * All `io` traits remain until I/O reform lands so imports can be rewritten all at once to `std::io::prelude::*`. This is a breaking change because many prelude reexports have been removed, and the RFC can be consulted for the exact list of removed reexports, as well as to find the locations of where to import them. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0503-prelude-stabilization.md [breaking-change] Closes #20068
81 lines
2.0 KiB
Rust
81 lines
2.0 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use std::cmp::Ordering;
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// Test default methods in PartialOrd and PartialEq
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//
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struct Fool(bool);
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impl PartialEq for Fool {
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fn eq(&self, other: &Fool) -> bool {
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let Fool(this) = *self;
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let Fool(other) = *other;
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this != other
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}
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}
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struct Int(int);
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impl PartialEq for Int {
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fn eq(&self, other: &Int) -> bool {
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let Int(this) = *self;
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let Int(other) = *other;
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this == other
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}
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}
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impl PartialOrd for Int {
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fn partial_cmp(&self, other: &Int) -> Option<Ordering> {
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let Int(this) = *self;
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let Int(other) = *other;
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this.partial_cmp(&other)
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}
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}
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struct RevInt(int);
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impl PartialEq for RevInt {
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fn eq(&self, other: &RevInt) -> bool {
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let RevInt(this) = *self;
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let RevInt(other) = *other;
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this == other
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}
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}
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impl PartialOrd for RevInt {
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fn partial_cmp(&self, other: &RevInt) -> Option<Ordering> {
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let RevInt(this) = *self;
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let RevInt(other) = *other;
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other.partial_cmp(&this)
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}
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}
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pub fn main() {
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assert!(Int(2) > Int(1));
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assert!(Int(2) >= Int(1));
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assert!(Int(1) >= Int(1));
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assert!(Int(1) < Int(2));
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assert!(Int(1) <= Int(2));
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assert!(Int(1) <= Int(1));
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assert!(RevInt(2) < RevInt(1));
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assert!(RevInt(2) <= RevInt(1));
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assert!(RevInt(1) <= RevInt(1));
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assert!(RevInt(1) > RevInt(2));
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assert!(RevInt(1) >= RevInt(2));
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assert!(RevInt(1) >= RevInt(1));
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assert!(Fool(true) == Fool(false));
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assert!(Fool(true) != Fool(true));
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assert!(Fool(false) != Fool(false));
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assert!(Fool(false) == Fool(true));
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}
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