[template.gslice.array] (original) (raw)

29 Numerics library [numerics]

29.6 Numeric arrays [numarray]

29.6.7 Class template gslice_array [template.gslice.array]

29.6.7.1 Overview [template.gslice.array.overview]

namespace std { template<class T> class gslice_array { public: using value_type = T;void operator= (const valarray<T>&) const;void operator*= (const valarray<T>&) const;void operator/= (const valarray<T>&) const;void operator%= (const valarray<T>&) const;void operator+= (const valarray<T>&) const;void operator-= (const valarray<T>&) const;void operator^= (const valarray<T>&) const;void operator&= (const valarray<T>&) const;void operator|= (const valarray<T>&) const;void operator<<=(const valarray<T>&) const;void operator>>=(const valarray<T>&) const; gslice_array(const gslice_array&);~gslice_array();const gslice_array& operator=(const gslice_array&) const;void operator=(const T&) const; gslice_array() = delete; };}

This template is a helper template used by thegslicesubscript operator

gslice_array<T> valarray<T>::operator[](const gslice&);

It has reference semantics to a subset of an array specified by agsliceobject.

Thus, the expressiona[gslice(1, length, stride)] = bhas the effect of assigning the elements ofbto a generalized slice of the elements ina.

29.6.7.2 Assignment [gslice.array.assign]

void operator=(const valarray<T>&) const;const gslice_array& operator=(const gslice_array&) const;

These assignment operators have reference semantics, assigning the values of the argument array elements to selected elements of thevalarray<T>object to which thegslice_arrayrefers.

29.6.7.3 Compound assignment [gslice.array.comp.assign]

void operator*= (const valarray<T>&) const;void operator/= (const valarray<T>&) const;void operator%= (const valarray<T>&) const;void operator+= (const valarray<T>&) const;void operator-= (const valarray<T>&) const;void operator^= (const valarray<T>&) const;void operator&= (const valarray<T>&) const;void operator|= (const valarray<T>&) const;void operator<<=(const valarray<T>&) const;void operator>>=(const valarray<T>&) const;

These compound assignments have reference semantics, applying the indicated operation to the elements of the argument array and selected elements of thevalarray<T>object to which thegslice_arrayobject refers.

29.6.7.4 Fill function [gslice.array.fill]

void operator=(const T&) const;

This function has reference semantics, assigning the value of its argument to the elements of thevalarray<T>object to which thegslice_arrayobject refers.