Trait core::slice::SliceIndex 1.28.0[−][src]
pub unsafe trait SliceIndex<T: ?Sized>: Sealed {
type Output: ?Sized;
fn get(self, slice: &T) -> Option<&Self::Output>;
fn get_mut(self, slice: &mut T) -> Option<&mut Self::Output>;
unsafe fn get_unchecked(self, slice: *const T) -> *const Self::Output;
unsafe fn get_unchecked_mut(self, slice: *mut T) -> *mut Self::Output;
fn index(self, slice: &T) -> &Self::Output;
fn index_mut(self, slice: &mut T) -> &mut Self::Output;
}Expand description
A helper trait used for indexing operations.
Implementations of this trait have to promise that if the argument
to get_(mut_)unchecked is a safe reference, then so is the result.
Associated Types
Required methods
slice_index_methods)Returns a shared reference to the output at this location, if in bounds.
slice_index_methods)Returns a mutable reference to the output at this location, if in bounds.
unsafe fn get_unchecked(self, slice: *const T) -> *const Self::Output
unsafe fn get_unchecked(self, slice: *const T) -> *const Self::Output
slice_index_methods)Returns a shared reference to the output at this location, without
performing any bounds checking.
Calling this method with an out-of-bounds index or a dangling slice pointer
is undefined behavior even if the resulting reference is not used.
unsafe fn get_unchecked_mut(self, slice: *mut T) -> *mut Self::Output
unsafe fn get_unchecked_mut(self, slice: *mut T) -> *mut Self::Output
slice_index_methods)Returns a mutable reference to the output at this location, without
performing any bounds checking.
Calling this method with an out-of-bounds index or a dangling slice pointer
is undefined behavior even if the resulting reference is not used.
slice_index_methods)Returns a shared reference to the output at this location, panicking if out of bounds.