libcudf  23.12.00
strings/contains.hpp
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16 #pragma once
17 
18 #include <cudf/column/column.hpp>
19 #include <cudf/scalar/scalar.hpp>
20 #include <cudf/strings/regex/flags.hpp>
22 
24 
25 namespace cudf {
26 namespace strings {
27 
28 struct regex_program;
29 
59 std::unique_ptr<column> contains_re(
60  strings_column_view const& input,
61  regex_program const& prog,
64 
87 std::unique_ptr<column> matches_re(
88  strings_column_view const& input,
89  regex_program const& prog,
92 
115 std::unique_ptr<column> count_re(
116  strings_column_view const& input,
117  regex_program const& prog,
120 
161 std::unique_ptr<column> like(
162  strings_column_view const& input,
163  string_scalar const& pattern,
164  string_scalar const& escape_character = string_scalar(""),
167 
202 std::unique_ptr<column> like(
203  strings_column_view const& input,
204  strings_column_view const& patterns,
205  string_scalar const& escape_character = string_scalar(""),
208  // end of doxygen group
210 } // namespace strings
211 } // namespace cudf
An owning class to represent a string in device memory.
Definition: scalar.hpp:429
Given a column-view of strings type, an instance of this class provides a wrapper on this compound co...
Class definition for cudf::column.
device_memory_resource * get_current_device_resource()
std::unique_ptr< column > matches_re(strings_column_view const &input, regex_program const &prog, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Returns a boolean column identifying rows which matching the given regex_program object but only at t...
std::unique_ptr< column > count_re(strings_column_view const &input, regex_program const &prog, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Returns the number of times the given regex_program's pattern matches in each string.
std::unique_ptr< column > contains_re(strings_column_view const &input, regex_program const &prog, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Returns a boolean column identifying rows which match the given regex_program object.
std::unique_ptr< column > like(strings_column_view const &input, string_scalar const &pattern, string_scalar const &escape_character=string_scalar(""), rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Returns a boolean column identifying rows which match the given like pattern.
cuDF interfaces
Definition: aggregation.hpp:34
rmm::cuda_stream_view const get_default_stream()
Get the current default stream.
Class definitions for cudf::scalar.
Class definition for cudf::strings_column_view.
Regex program class.