Performs an equality comparison between two elements in two columns. More...

Public Member Functions
	element_equality_comparator (Nullate has_nulls, column_device_view lhs, column_device_view rhs, null_equality nulls_are_equal=null_equality::EQUAL)
	Construct type-dispatched function object for comparing equality between two elements. More...

template<typename Element , std::enable_if_t< cudf::is_equality_comparable< Element, Element >()> * = nullptr>
bool	operator() (size_type lhs_element_index, size_type rhs_element_index) const noexcept
	Compares the specified elements for equality. More...

Detailed Description

Performs an equality comparison between two elements in two columns.

Template Parameters

Nullate A cudf::nullate type describing how to check for nulls.

Definition at line 162 of file row_operators.cuh.

Constructor & Destructor Documentation

template<typename Nullate >

cudf::element_equality_comparator< Nullate >::element_equality_comparator	(	Nullate	has_nulls,
		column_device_view	lhs,
		column_device_view	rhs,
		null_equality	nulls_are_equal = `null_equality::EQUAL`
	)

inline

Construct type-dispatched function object for comparing equality between two elements.

Parameters

has_nulls	Indicates if either input column contains nulls.
lhs	The column containing the first element
rhs	The column containing the second element (may be the same as lhs)
nulls_are_equal	Indicates if two null elements are treated as equivalent

Definition at line 176 of file row_operators.cuh.

template<typename Nullate >

template<typename Element , std::enable_if_t< cudf::is_equality_comparable< Element, Element >()> * = nullptr>

bool cudf::element_equality_comparator< Nullate >::operator()	(	size_type	lhs_element_index,
		size_type	rhs_element_index
	)		const

inlinenoexcept

Compares the specified elements for equality.

Parameters

lhs_element_index	The index of the first element
rhs_element_index	The index of the second element

Returns: True if both lhs and rhs element are both nulls and nulls_are_equal is true, or equal

Definition at line 193 of file row_operators.cuh.

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