cudf::element_equality_comparator< Nullate > Class Template Reference

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...
template<typename Element , std::enable_if_t< not cudf::is_equality_comparable< Element, Element >()> * = nullptr>
bool	operator() (size_type lhs_element_index, size_type rhs_element_index)

Detailed Description

template<typename Nullate>
class cudf::element_equality_comparator< Nullate >

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 168 of file row_operators.cuh.

Constructor & Destructor Documentation

element_equality_comparator()

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.

Note

lhs and rhs may be the same.

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 182 of file row_operators.cuh.

Member Function Documentation

operator()()

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 199 of file row_operators.cuh.

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

• row_operators.cuh