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specialize zip: Introduce TrustedRandomAccess trait
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// Copyright 2016 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. | ||
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use iter::ExactSizeIterator; | ||
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/// An iterator whose items are random accessible efficiently | ||
/// | ||
/// # Safety | ||
/// | ||
/// The iterator's .len() and size_hint() must be exact. | ||
/// | ||
/// .get_unchecked() must return distinct mutable references for distinct | ||
/// indices (if applicable), and must return a valid reference if index is in | ||
/// 0..self.len(). | ||
#[doc(hidden)] | ||
pub unsafe trait TrustedRandomAccess : ExactSizeIterator { | ||
unsafe fn get_unchecked(&mut self, i: usize) -> Self::Item; | ||
} | ||
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@@ -156,4 +156,5 @@ pub mod hash; | |
pub mod fmt; | ||
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// note: does not need to be public | ||
mod iter_private; | ||
mod tuple; |