Computes the hash value of a row in the given table. More...

Public Member Functions
CUDF_HOST_DEVICE	row_hasher (Nullate has_nulls, table_device_view t)
	Constructs a row_hasher object. More...

CUDF_HOST_DEVICE	row_hasher (Nullate has_nulls, table_device_view t, uint32_t seed)
	Constructs a row_hasher object with a seed value. More...

auto	operator() (size_type row_index) const
	Computes the hash value of the row at `row_index` in the `table` More...

Detailed Description

Computes the hash value of a row in the given table.

Template Parameters

hash_function	Hash functor to use for hashing elements.
Nullate	A cudf::nullate type describing how to check for nulls.

Definition at line 568 of file row_operators.cuh.

Constructor & Destructor Documentation

template<template< typename > class hash_function, typename Nullate >

CUDF_HOST_DEVICE cudf::row_hasher< hash_function, Nullate >::row_hasher	(	Nullate	has_nulls,
		table_device_view	t
	)

inline

Constructs a row_hasher object.

Parameters

has_nulls	Indicates if either input table contains nulls
t	A table_device_view to hash

Definition at line 578 of file row_operators.cuh.

template<template< typename > class hash_function, typename Nullate >

CUDF_HOST_DEVICE cudf::row_hasher< hash_function, Nullate >::row_hasher	(	Nullate	has_nulls,
		table_device_view	t,
		uint32_t	seed
	)

inline

Constructs a row_hasher object with a seed value.

Parameters

has_nulls	Indicates if either input table contains nulls
t	A table_device_view to hash
seed	A seed value to use for hashing

Definition at line 589 of file row_operators.cuh.

template<template< typename > class hash_function, typename Nullate >

auto cudf::row_hasher< hash_function, Nullate >::operator() ( size_type row_index ) const

inline

Computes the hash value of the row at row_index in the table

Parameters

row_index The index of the row in the table to hash

Definition at line 600 of file row_operators.cuh.

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