cbc31df4fc
The compiler was updated to recognize that implementations for ty_uniq(..) are allowed if the Box lang item is located in the current crate. This enforces the idea that libcore cannot allocated, and moves all related trait implementations from libcore to libstd. This is a breaking change in that the AnyOwnExt trait has moved from the any module to the owned module. Any previous users of std::any::AnyOwnExt should now use std::owned::AnyOwnExt instead. This was done because the trait is intended for Box traits and only Box traits. [breaking-change]
21 lines
807 B
Rust
21 lines
807 B
Rust
// Copyright 2013 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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//! The `Default` trait for types which may have meaningful default values
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/// A trait that types which have a useful default value should implement.
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pub trait Default {
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/// Return the "default value" for a type.
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fn default() -> Self;
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}
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impl<T: Default + 'static> Default for @T {
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fn default() -> @T { @Default::default() }
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}
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