raisim::RowRef

class · #include <raisim/math/Blocks.hpp>

Inherits: raisim::MatExpr< RowRef< T, m > >

template <class T, size_t m>
class RowRef

View of one row (m elements) of a matrix, returned by Mat::row(). Reads and writes go to the referenced matrix; for a const matrix the accessors return by value.

Public types

SelfType

typedef RowRef<T, m> SelfType

This type.

MutableRef

using MutableRef = std::conditional_t<std::is_const<T>::value, double, double &>

double& for a mutable referenced matrix, double for a const one.

Constructors & destructor

RowRef

RowRef(T &array, size_t r)

Parameters

Parameter	Description
array (in)	referenced matrix
r (in)	row index

Public member functions

operator()

double operator()(size_t i) const

Parameters

Parameter	Description
i (in)	element index

Returns element i of the row.

MutableRef operator()(size_t i)

Parameters

Parameter	Description
i (in)	element index

Returns element i of the row.

double operator()(size_t i, size_t j) const

Parameters

Parameter	Description
i (in)	ignored
j (in)	column index

Returns element j of the row; i is ignored.

MutableRef operator()(size_t i, size_t j)

Parameters

Parameter	Description
i (in)	ignored
j (in)	column index

Returns element j of the row; i is ignored.

operator[]

double operator[](size_t i) const

Parameters

Parameter	Description
i (in)	element index

Returns element i of the row.

MutableRef operator[](size_t i)

Parameters

Parameter	Description
i (in)	element index

Returns element i of the row.

operator=

template <class T2>
RowRef<T, m> &operator=(const MatExpr<T2> &expr)

Writes the m elements of expr (in linear order) into the row.

Parameters

Parameter	Description
expr (in)	source expression with m elements

Returns *this

template <size_t exprRows>
RowRef<T, m> &operator=(const Mat<exprRows, 1> &expr)

Writes a column vector of size m into the row.

Parameters

Parameter	Description
expr (in)	source vector

Returns *this

Static member functions

size static

static constexpr size_t size()

Returns number of elements, m.

rows static

static constexpr size_t rows()

Returns 1.

cols static

static constexpr size_t cols()

Returns number of columns, m.

Public attributes

ref

T &ref

Referenced matrix.

row

size_t row

Row index in the referenced matrix.