Arr Class Reference

1D or 2D array backed by std::vector<double> for small optimization problems More...

#include <arr.hpp>

Public Types
using	value_type = double

Public Member Functions
	Arr ()=default
	Default constructor (empty array)
	Arr (size_t n)
	Construct 1D array of size n, zero-initialized.
	Arr (size_t r, size_t c)
	Construct 2D array with r rows, c columns, zero-initialized.
	Arr (size_t r, size_t c, double val)
	Construct 2D array with r rows, c columns, fill value val.
	Arr (std::initializer_list< double > il)
	Construct from initializer list (1D)
	Arr (std::vector< double > v)
	Construct from vector (1D)
double &	operator() (size_t i)
	1D element access (mutable)
const double &	operator() (size_t i) const
	1D element access (const)
double &	operator() (size_t i, size_t j)
	2D element access (mutable), row-major
const double &	operator() (size_t i, size_t j) const
	2D element access (const), row-major
double &	operator[] (size_t i)
	1D element access (mutable)
const double &	operator[] (size_t i) const
	1D element access (const)
size_t	size () const
	Total number of elements.
size_t	rows () const
	Number of rows (1 for 1D arrays)
size_t	cols () const
	Number of columns (0 for 1D arrays)
bool	is_2d () const
	Whether this is a 2D array (cols > 0)
double *	data ()
	Raw pointer to underlying data (mutable)
const double *	data () const
	Raw pointer to underlying data (const)
auto	begin ()
	Iterator to beginning (mutable)
auto	begin () const
	Iterator to beginning (const)
auto	end ()
	Iterator past the end (mutable)
auto	end () const
	Iterator past the end (const)
Arr &	operator+= (double s)
	Add scalar to all elements.
Arr &	operator-= (double s)
	Subtract scalar from all elements.
Arr &	operator*= (double s)
	Multiply all elements by scalar.
Arr &	operator+= (const Arr &other)
	Element-wise addition with another Arr.
Arr &	operator-= (const Arr &other)
	Element-wise subtraction with another Arr.

Detailed Description

1D or 2D array backed by std::vector<double> for small optimization problems

Member Typedef Documentation

value_type

using Arr::value_type = double

Constructor & Destructor Documentation

Arr() [1/6]

Arr::Arr ( )

default

Default constructor (empty array)

Arr() [2/6]

Arr::Arr ( size_t  n )

inlineexplicit

Construct 1D array of size n, zero-initialized.

Arr() [3/6]

Arr::Arr ( size_t  r, size_t  c  )

inline

Construct 2D array with r rows, c columns, zero-initialized.

Arr() [4/6]

Arr::Arr ( size_t  r, size_t  c, double  val  )

inline

Construct 2D array with r rows, c columns, fill value val.

Arr() [5/6]

Arr::Arr ( std::initializer_list< double >  il )

inline

Construct from initializer list (1D)

Arr() [6/6]

Arr::Arr ( std::vector< double >  v )

inlineexplicit

Construct from vector (1D)

Member Function Documentation

begin() [1/2]

auto Arr::begin ( )

inline

Iterator to beginning (mutable)

begin() [2/2]

auto Arr::begin ( ) const

inline

Iterator to beginning (const)

cols()

size_t Arr::cols ( ) const

inline

Number of columns (0 for 1D arrays)

data() [1/2]

double * Arr::data ( )

inline

Raw pointer to underlying data (mutable)

data() [2/2]

const double * Arr::data ( ) const

inline

Raw pointer to underlying data (const)

end() [1/2]

auto Arr::end ( )

inline

Iterator past the end (mutable)

end() [2/2]

auto Arr::end ( ) const

inline

Iterator past the end (const)

is_2d()

bool Arr::is_2d ( ) const

inline

Whether this is a 2D array (cols > 0)

operator()() [1/4]

double & Arr::operator() ( size_t  i )

inline

1D element access (mutable)

operator()() [2/4]

const double & Arr::operator() ( size_t  i ) const

inline

1D element access (const)

operator()() [3/4]

double & Arr::operator() ( size_t  i, size_t  j  )

inline

2D element access (mutable), row-major

operator()() [4/4]

const double & Arr::operator() ( size_t  i, size_t  j  ) const

inline

2D element access (const), row-major

operator*=()

Arr & Arr::operator*= ( double  s )

inline

Multiply all elements by scalar.

operator+=() [1/2]

Arr & Arr::operator+= ( const Arr &  other )

inline

Element-wise addition with another Arr.

operator+=() [2/2]

Arr & Arr::operator+= ( double  s )

inline

Add scalar to all elements.

operator-=() [1/2]

Arr & Arr::operator-= ( const Arr &  other )

inline

Element-wise subtraction with another Arr.

operator-=() [2/2]

Arr & Arr::operator-= ( double  s )

inline

Subtract scalar from all elements.

operator[]() [1/2]

double & Arr::operator[] ( size_t  i )

inline

1D element access (mutable)

operator[]() [2/2]

const double & Arr::operator[] ( size_t  i ) const

inline

1D element access (const)

rows()

size_t Arr::rows ( ) const

inline

Number of rows (1 for 1D arrays)

size()

size_t Arr::size ( ) const

inline

Total number of elements.

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The documentation for this class was generated from the following file:

• ellalgo/arr.hpp