Trait nalgebra::base::allocator::Allocator

pub trait Allocator<T, R: Dim, C: Dim = U1>: Any + Sized {
    type Buffer: StorageMut<T, R, C> + IsContiguous + Clone + Debug;
    type BufferUninit: RawStorageMut<MaybeUninit<T>, R, C> + IsContiguous;
    fn allocate_uninit(nrows: R, ncols: C) -> Self::BufferUninit;
    unsafe fn assume_init(uninit: Self::BufferUninit) -> Self::Buffer;
    fn allocate_from_iterator<I: IntoIterator<Item = T>>(
        nrows: R, 
        ncols: C, 
        iter: I
    ) -> Self::Buffer;
}

A matrix allocator of a memory buffer that may contain R::to_usize() * C::to_usize() elements of type T.

An allocator is said to be: − static: if R and C both implement DimName. − dynamic: if either one (or both) of R or C is equal to Dynamic.

Every allocator must be both static and dynamic. Though not all implementations may share the same Buffer type.

Associated Types

type Buffer: StorageMut<T, R, C> + IsContiguous + Clone + Debug

The type of buffer this allocator can instanciate.

type BufferUninit: RawStorageMut<MaybeUninit<T>, R, C> + IsContiguous

The type of buffer with uninitialized components this allocator can instanciate.

Required methods

fn allocate_uninit(nrows: R, ncols: C) -> Self::BufferUninit

Allocates a buffer with the given number of rows and columns without initializing its content.

unsafe fn assume_init(uninit: Self::BufferUninit) -> Self::Buffer

Assumes a data buffer to be initialized.

Safety

The user must make sure that every single entry of the buffer has been initialized, or Undefined Behavior will immediately occur.

fn allocate_from_iterator<I: IntoIterator<Item = T>>(
    nrows: R,
    ncols: C,
    iter: I
) -> Self::Buffer

Allocates a buffer initialized with the content of the given iterator.

Implementors

impl<T: Scalar, C: Dim> Allocator<T, Dynamic, C> for DefaultAllocator

type Buffer = VecStorage<T, Dynamic, C>

type BufferUninit = VecStorage<MaybeUninit<T>, Dynamic, C>

impl<T: Scalar, R: DimName> Allocator<T, R, Dynamic> for DefaultAllocator

type Buffer = VecStorage<T, R, Dynamic>

type BufferUninit = VecStorage<MaybeUninit<T>, R, Dynamic>

impl<T: Scalar, const R: usize, const C: usize> Allocator<T, Const<R>, Const<C>> for DefaultAllocator

type Buffer = ArrayStorage<T, R, C>

type BufferUninit = ArrayStorage<MaybeUninit<T>, R, C>