     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28

    // 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.

    /// An iterator whose items are random accessible efficiently
    ///
    /// # Safety
    ///
    /// The iterator's .len() and size_hint() must be exact.
    /// `.len()` must be cheap to call.
    ///
    /// .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;
        /// Returns `true` if getting an iterator element may have
        /// side effects. Remember to take inner iterators into account.
        fn may_have_side_effect() -> bool;
    }

# Help

## Keyboard Shortcuts

?
  Show this help dialog
S
  Focus the search field
⇤
  Move up in search results
⇥
  Move down in search results
⏎
  Go to active search result
+
  Collapse/expand all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)