std::indirect_array< _Tp >(3cxx)

NAME
std::indirect_array< _Tp > - Reference to arbitrary subset of an array.

SYNOPSIS

#include <valarray>

  Public Types

typedef _Tp value_type

  Public Member Functions

indirect_array (const indirect_array &)
Copy constructor. Both slices refer to the same underlying array.
template<class _Dom > void operator%= (const _Expr< _Dom, _Tp > &) const
void operator%= (const valarray< _Tp > &) const
Modulo slice elements by corresponding elements of v.
template<class _Dom > void operator&= (const _Expr< _Dom, _Tp > &) const
void operator&= (const valarray< _Tp > &) const
Logical and slice elements with corresponding elements of v.
template<class _Dom > void operator*= (const _Expr< _Dom, _Tp > &) const
void operator*= (const valarray< _Tp > &) const
Multiply slice elements by corresponding elements of v.
template<class _Dom > void operator+= (const _Expr< _Dom, _Tp > &) const
void operator+= (const valarray< _Tp > &) const
Add corresponding elements of v to slice elements.
template<class _Dom > void operator-= (const _Expr< _Dom, _Tp > &) const
void operator-= (const valarray< _Tp > &) const
Subtract corresponding elements of v from slice elements.
template<class _Dom > void operator/= (const _Expr< _Dom, _Tp > &) const
void operator/= (const valarray< _Tp > &) const
Divide slice elements by corresponding elements of v.
template<class _Dom > void operator<<= (const _Expr< _Dom, _Tp > &) const
void operator<<= (const valarray< _Tp > &) const
Left shift slice elements by corresponding elements of v.
template<class _Dom > void operator= (const _Expr< _Dom, _Tp > &) const
void operator= (const _Tp &) const
Assign all slice elements to t.
indirect_array & operator= (const indirect_array &)
Assignment operator. Assigns elements to corresponding elements of a.
template<typename _Tp > indirect_array< _Tp > & operator= (const indirect_array< _Tp > &__a)
void operator= (const valarray< _Tp > &) const
Assign slice elements to corresponding elements of v.
template<class _Dom > void operator>>= (const _Expr< _Dom, _Tp > &) const
void operator>>= (const valarray< _Tp > &) const
Right shift slice elements by corresponding elements of v.
template<class _Dom > void operator^= (const _Expr< _Dom, _Tp > &) const
void operator^= (const valarray< _Tp > &) const
Logical xor slice elements with corresponding elements of v.
template<class _Dom > void operator|= (const _Expr< _Dom, _Tp > &) const
void operator|= (const valarray< _Tp > &) const
Logical or slice elements with corresponding elements of v.

  Friends

class gslice_array< _Tp >
class valarray< _Tp >

Detailed Description

  template<class _Tp>
class std::indirect_array< _Tp >"Reference to arbitrary subset of an array.

An indirect_array is a reference to the actual elements of an array specified by an ordered array of indices. The way to get an indirect_array is to call operator[](valarray<size_t>) on a valarray. The returned indirect_array then permits carrying operations out on the referenced subset of elements in the original valarray.

For example, if an indirect_array is obtained using the array (4,2,0) as an argument, and then assigned to an array containing (1,2,3), then the underlying array will have array[0]==3, array[2]==2, and array[4]==1.

Parameters
    Tp Element type.

Constructor & Destructor Documentation

  template<class _Tp > std::indirect_array< _Tp >::indirect_array (const indirect_array< _Tp > &)

Copy constructor. Both slices refer to the same underlying array.

Member Function Documentation

  template<class _Tp > void std::indirect_array< _Tp >::operator%= (const valarray< _Tp > &) const

Modulo slice elements by corresponding elements of v.

  template<class _Tp > void std::indirect_array< _Tp >::operator&= (const valarray< _Tp > &) const

Logical and slice elements with corresponding elements of v.

  template<class _Tp > void std::indirect_array< _Tp >::operator*= (const valarray< _Tp > &) const

Multiply slice elements by corresponding elements of v.

  template<class _Tp > void std::indirect_array< _Tp >::operator+= (const valarray< _Tp > &) const

Add corresponding elements of v to slice elements.

  template<class _Tp > void std::indirect_array< _Tp >::operator-= (const valarray< _Tp > &) const

Subtract corresponding elements of v from slice elements.

  template<class _Tp > void std::indirect_array< _Tp >::operator/= (const valarray< _Tp > &) const

Divide slice elements by corresponding elements of v.

  template<class _Tp > void std::indirect_array< _Tp >::operator<<= (const valarray< _Tp > &) const

Left shift slice elements by corresponding elements of v.

  template<class _Tp > indirect_array & std::indirect_array< _Tp >::operator= (const indirect_array< _Tp > &)

Assignment operator. Assigns elements to corresponding elements of a.

  template<class _Tp > void std::indirect_array< _Tp >::operator>>= (const valarray< _Tp > &) const

Right shift slice elements by corresponding elements of v.

  template<class _Tp > void std::indirect_array< _Tp >::operator^= (const valarray< _Tp > &) const

Logical xor slice elements with corresponding elements of v.

  template<class _Tp > void std::indirect_array< _Tp >::operator|= (const valarray< _Tp > &) const

Logical or slice elements with corresponding elements of v.

Author

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