pair accessor of column with/without null bitmask More...

Public Member Functions
	pair_accessor (column_device_view const &_col)
	constructor More...

thrust::pair< T, bool >	operator() (cudf::size_type i) const
	Pair accessor. More...

Public Attributes
column_device_view const	col
	column view of column in device

Detailed Description

template<typename T, bool has_nulls = false>
struct cudf::detail::pair_accessor< T, has_nulls >

pair accessor of column with/without null bitmask

A unary functor returns pair with scalar value at id and boolean validity operator() (cudf::size_type id) computes element and returns a pair(element, validity)

the return value for element i will return pair(column[i], validity) validity is true if has_nulls=false. validity is validity of the element at i if has_nulls=true and the column is nullable.

Exceptions

cudf::logic_error	if `has_nulls==true` and the column is not nullable.
cudf::logic_error	if column datatype and template T type mismatch.

Template Parameters

T	The type of elements in the column
has_nulls	boolean indicating to treat the column is nullable

Definition at line 1355 of file column_device_view.cuh.

Constructor & Destructor Documentation

◆ pair_accessor()

template<typename T , bool has_nulls = false>

cudf::detail::pair_accessor< T, has_nulls >::pair_accessor ( column_device_view const & _col )

inline

constructor

Parameters

[in] _col column device view of cudf column

Definition at line 1363 of file column_device_view.cuh.

Member Function Documentation

◆ operator()()

template<typename T , bool has_nulls = false>

thrust::pair<T, bool> cudf::detail::pair_accessor< T, has_nulls >::operator() ( cudf::size_type i ) const

inline

Pair accessor.

Parameters

[in] i index of the element

Returns: pair(element, validity)

Definition at line 1375 of file column_device_view.cuh.

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

column_device_view.cuh

Public Member Functions