     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
    29
    30
    31
    32

    // Copyright 2016 Amanieu d'Antras
    //
    // Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
    // http://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.

    // Option::unchecked_unwrap
    pub trait UncheckedOptionExt<T> {
        unsafe fn unchecked_unwrap(self) -> T;
    }

    impl<T> UncheckedOptionExt<T> for Option<T> {
        #[inline]
        unsafe fn unchecked_unwrap(self) -> T {
            match self {
                Some(x) => x,
                None => unreachable(),
            }
        }
    }

    // Equivalent to intrinsics::unreachable() in release mode
    #[inline]
    unsafe fn unreachable() -> ! {
        if cfg!(debug_assertions) {
            unreachable!();
        } else {
            enum Void {}
            match *(1 as *const Void) {}
        }
    }

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse 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`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)