Struct nalgebra::base::VecStorage

#[repr(C)]
pub struct VecStorage<N, R: Dim, C: Dim> { /* fields omitted */ }

A Vec-based matrix data storage. It may be dynamically-sized.

Methods

impl<N, R: Dim, C: Dim> VecStorage<N, R, C>

pub fn new(nrows: R, ncols: C, data: Vec<N>) -> VecStorage<N, R, C>

Creates a new dynamic matrix data storage from the given vector and shape.

pub fn data(&self) -> &Vec<N>

The underlying data storage.

pub unsafe fn data_mut(&mut self) -> &mut Vec<N>

The underlying mutable data storage.

This is unsafe because this may cause UB if the vector is modified by the user.

pub unsafe fn resize(self, sz: usize) -> Vec<N>

Resizes the underlying mutable data storage and unwraps it.

If sz is larger than the current size, additional elements are uninitialized. If sz is smaller than the current size, additional elements are truncated.

Methods from Deref<Target = Vec<N>>

pub fn capacity(&self) -> usize

Returns the number of elements the vector can hold without reallocating.

Examples

let vec: Vec<i32> = Vec::with_capacity(10);
assert_eq!(vec.capacity(), 10);

pub fn as_slice(&self) -> &[T]

Extracts a slice containing the entire vector.

Equivalent to &s[..].

Examples

use std::io::{self, Write};
let buffer = vec![1, 2, 3, 5, 8];
io::sink().write(buffer.as_slice()).unwrap();

pub fn as_ptr(&self) -> *const T

Returns a raw pointer to the vector's buffer.

The caller must ensure that the vector outlives the pointer this function returns, or else it will end up pointing to garbage. Modifying the vector may cause its buffer to be reallocated, which would also make any pointers to it invalid.

The caller must also ensure that the memory the pointer (non-transitively) points to is never written to (except inside an UnsafeCell) using this pointer or any pointer derived from it. If you need to mutate the contents of the slice, use as_mut_ptr.

Examples

let x = vec![1, 2, 4];
let x_ptr = x.as_ptr();

unsafe {
    for i in 0..x.len() {
        assert_eq!(*x_ptr.add(i), 1 << i);
    }
}

pub fn len(&self) -> usize

Returns the number of elements in the vector, also referred to as its 'length'.

Examples

let a = vec![1, 2, 3];
assert_eq!(a.len(), 3);

pub fn is_empty(&self) -> bool

Returns true if the vector contains no elements.

Examples

let mut v = Vec::new();
assert!(v.is_empty());

v.push(1);
assert!(!v.is_empty());

Trait Implementations

impl<N: Scalar, C: Dim> Storage<N, Dynamic, C> for VecStorage<N, Dynamic, C> where
    DefaultAllocator: Allocator<N, Dynamic, C, Buffer = Self>, 

type RStride = U1

The static stride of this storage's rows.

type CStride = Dynamic

The static stride of this storage's columns.

fn ptr(&self) -> *const N

The matrix data pointer.

fn shape(&self) -> (Dynamic, C)

The dimension of the matrix at run-time. Arr length of zero indicates the additive identity element of any dimension. Must be equal to Self::dimension() if it is not None.

fn strides(&self) -> (Self::RStride, Self::CStride)

The spacing between consecutive row elements and consecutive column elements.

fn is_contiguous(&self) -> bool

Indicates whether this data buffer stores its elements contiguously.

fn into_owned(self) -> Owned<N, Dynamic, C> where
    DefaultAllocator: Allocator<N, Dynamic, C>, 

Builds a matrix data storage that does not contain any reference.

fn clone_owned(&self) -> Owned<N, Dynamic, C> where
    DefaultAllocator: Allocator<N, Dynamic, C>, 

Clones this data storage to one that does not contain any reference.

fn as_slice(&self) -> &[N]

Retrieves the data buffer as a contiguous slice.

fn linear_index(&self, irow: usize, icol: usize) -> usize

Compute the index corresponding to the irow-th row and icol-th column of this matrix. The index must be such that the following holds:

unsafe fn get_address_unchecked_linear(&self, i: usize) -> *const N

Gets the address of the i-th matrix component without performing bound-checking.

unsafe fn get_address_unchecked(&self, irow: usize, icol: usize) -> *const N

Gets the address of the i-th matrix component without performing bound-checking.

unsafe fn get_unchecked_linear(&self, i: usize) -> &N

Retrieves a reference to the i-th element without bound-checking.

unsafe fn get_unchecked(&self, irow: usize, icol: usize) -> &N

Retrieves a reference to the i-th element without bound-checking.

impl<N: Scalar, R: DimName> Storage<N, R, Dynamic> for VecStorage<N, R, Dynamic> where
    DefaultAllocator: Allocator<N, R, Dynamic, Buffer = Self>, 

type RStride = U1

The static stride of this storage's rows.

type CStride = R

The static stride of this storage's columns.

fn ptr(&self) -> *const N

The matrix data pointer.

fn shape(&self) -> (R, Dynamic)

The dimension of the matrix at run-time. Arr length of zero indicates the additive identity element of any dimension. Must be equal to Self::dimension() if it is not None.

fn strides(&self) -> (Self::RStride, Self::CStride)

The spacing between consecutive row elements and consecutive column elements.

fn is_contiguous(&self) -> bool

Indicates whether this data buffer stores its elements contiguously.

fn into_owned(self) -> Owned<N, R, Dynamic> where
    DefaultAllocator: Allocator<N, R, Dynamic>, 

Builds a matrix data storage that does not contain any reference.

fn clone_owned(&self) -> Owned<N, R, Dynamic> where
    DefaultAllocator: Allocator<N, R, Dynamic>, 

Clones this data storage to one that does not contain any reference.

fn as_slice(&self) -> &[N]

Retrieves the data buffer as a contiguous slice.

fn linear_index(&self, irow: usize, icol: usize) -> usize

Compute the index corresponding to the irow-th row and icol-th column of this matrix. The index must be such that the following holds:

unsafe fn get_address_unchecked_linear(&self, i: usize) -> *const N

Gets the address of the i-th matrix component without performing bound-checking.

unsafe fn get_address_unchecked(&self, irow: usize, icol: usize) -> *const N

Gets the address of the i-th matrix component without performing bound-checking.

unsafe fn get_unchecked_linear(&self, i: usize) -> &N

Retrieves a reference to the i-th element without bound-checking.

unsafe fn get_unchecked(&self, irow: usize, icol: usize) -> &N

Retrieves a reference to the i-th element without bound-checking.

impl<N: Scalar, C: Dim> StorageMut<N, Dynamic, C> for VecStorage<N, Dynamic, C> where
    DefaultAllocator: Allocator<N, Dynamic, C, Buffer = Self>, 

fn ptr_mut(&mut self) -> *mut N

The matrix mutable data pointer.

fn as_mut_slice(&mut self) -> &mut [N]

Retrieves the mutable data buffer as a contiguous slice.

unsafe fn get_address_unchecked_linear_mut(&mut self, i: usize) -> *mut N

Gets the mutable address of the i-th matrix component without performing bound-checking.

unsafe fn get_address_unchecked_mut(
    &mut self,
    irow: usize,
    icol: usize
) -> *mut N

Gets the mutable address of the i-th matrix component without performing bound-checking.

unsafe fn get_unchecked_linear_mut(&mut self, i: usize) -> &mut N

Retrieves a mutable reference to the i-th element without bound-checking.

unsafe fn get_unchecked_mut(&mut self, irow: usize, icol: usize) -> &mut N

Retrieves a mutable reference to the element at (irow, icol) without bound-checking.

unsafe fn swap_unchecked_linear(&mut self, i1: usize, i2: usize)

Swaps two elements using their linear index without bound-checking.

unsafe fn swap_unchecked(
    &mut self,
    row_col1: (usize, usize),
    row_col2: (usize, usize)
)

Swaps two elements without bound-checking.

impl<N: Scalar, R: DimName> StorageMut<N, R, Dynamic> for VecStorage<N, R, Dynamic> where
    DefaultAllocator: Allocator<N, R, Dynamic, Buffer = Self>, 

fn ptr_mut(&mut self) -> *mut N

The matrix mutable data pointer.

fn as_mut_slice(&mut self) -> &mut [N]

Retrieves the mutable data buffer as a contiguous slice.

unsafe fn get_address_unchecked_linear_mut(&mut self, i: usize) -> *mut N

Gets the mutable address of the i-th matrix component without performing bound-checking.

unsafe fn get_address_unchecked_mut(
    &mut self,
    irow: usize,
    icol: usize
) -> *mut N

Gets the mutable address of the i-th matrix component without performing bound-checking.

unsafe fn get_unchecked_linear_mut(&mut self, i: usize) -> &mut N

Retrieves a mutable reference to the i-th element without bound-checking.

unsafe fn get_unchecked_mut(&mut self, irow: usize, icol: usize) -> &mut N

Retrieves a mutable reference to the element at (irow, icol) without bound-checking.

unsafe fn swap_unchecked_linear(&mut self, i1: usize, i2: usize)

Swaps two elements using their linear index without bound-checking.

unsafe fn swap_unchecked(
    &mut self,
    row_col1: (usize, usize),
    row_col2: (usize, usize)
)

Swaps two elements without bound-checking.

impl<N: Scalar, C: Dim> ContiguousStorage<N, Dynamic, C> for VecStorage<N, Dynamic, C> where
    DefaultAllocator: Allocator<N, Dynamic, C, Buffer = Self>, 

impl<N: Scalar, R: DimName> ContiguousStorage<N, R, Dynamic> for VecStorage<N, R, Dynamic> where
    DefaultAllocator: Allocator<N, R, Dynamic, Buffer = Self>, 

impl<N: Scalar, C: Dim> ContiguousStorageMut<N, Dynamic, C> for VecStorage<N, Dynamic, C> where
    DefaultAllocator: Allocator<N, Dynamic, C, Buffer = Self>, 

impl<N: Scalar, R: DimName> ContiguousStorageMut<N, R, Dynamic> for VecStorage<N, R, Dynamic> where
    DefaultAllocator: Allocator<N, R, Dynamic, Buffer = Self>, 

impl<N: Eq, R: Eq + Dim, C: Eq + Dim> Eq for VecStorage<N, R, C>

impl<N, R: Dim> Extend<N> for VecStorage<N, R, Dynamic>

fn extend<I: IntoIterator<Item = N>>(&mut self, iter: I)

Extends the number of columns of the VecStorage with elements from the given iterator.

Panics

This function panics if the number of elements yielded by the given iterator is not a multiple of the number of rows of the VecStorage.

impl<N, R, RV, SV> Extend<Matrix<N, RV, U1, SV>> for VecStorage<N, R, Dynamic> where
    N: Scalar,
    R: Dim,
    RV: Dim,
    SV: Storage<N, RV>,
    ShapeConstraint: SameNumberOfRows<R, RV>, 

fn extend<I: IntoIterator<Item = Vector<N, RV, SV>>>(&mut self, iter: I)

Extends the number of columns of the VecStorage with vectors from the given iterator.

Panics

This function panics if the number of rows of each Vector yielded by the iterator is not equal to the number of rows of this VecStorage.

impl<N> Extend<N> for VecStorage<N, Dynamic, U1>

fn extend<I: IntoIterator<Item = N>>(&mut self, iter: I)

Extends the number of rows of the VecStorage with elements from the given iterator.

impl<N, R: Dim, C: Dim> Into<Vec<N>> for VecStorage<N, R, C>

fn into(self) -> Vec<N>

Performs the conversion.

impl<N: Clone, R: Clone + Dim, C: Clone + Dim> Clone for VecStorage<N, R, C>

fn clone(&self) -> VecStorage<N, R, C>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<N: PartialEq, R: PartialEq + Dim, C: PartialEq + Dim> PartialEq<VecStorage<N, R, C>> for VecStorage<N, R, C>

fn eq(&self, other: &VecStorage<N, R, C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &VecStorage<N, R, C>) -> bool

This method tests for !=.

impl<N, R: Dim, C: Dim> Deref for VecStorage<N, R, C>

type Target = Vec<N>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<N: Debug, R: Debug + Dim, C: Debug + Dim> Debug for VecStorage<N, R, C>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.