40 lines
1.1 KiB
Rust
40 lines
1.1 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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/*!
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The kind traits
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Rust types can be classified in various useful ways according to
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intrinsic properties of the type. These classifications, often called
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'kinds', are represented as traits.
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They cannot be implemented by user code, but are instead implemented
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by the compiler automatically for the types to which they apply.
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*/
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/// Types able to be transferred across task boundaries.
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#[lang="send"]
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pub trait Send {
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// empty.
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}
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/// Types that are either immutable or have inherited mutability.
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#[lang="freeze"]
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pub trait Freeze {
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// empty.
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}
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/// Types with a constant size known at compile-time.
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#[lang="sized"]
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pub trait Sized {
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// Empty.
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}
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