CSV data source
Refer to Developer Guide: CSV data source.
Programming Interface
All types and functions in this section are declared in the
oneapi::dal::csv
namespace and be available via inclusion of the
oneapi/dal/io/csv.hpp
header file.enum class read_options : std::uint64_t {
none = 0,
parse_header = 1 << 0
};
constexpr char default_delimiter = ',';
constexpr read_options default_read_options = read_options::none;
class data_source {
public:
data_source(const char *file_name,
char delimiter = default_delimiter,
read_options opts = default_read_options);
data_source(const std::string &file_name,
char delimiter = default_delimiter,
read_options opts = default_read_options);
std::string get_file_name() const;
char get_delimiter() const;
read_options get_read_options() const;
};
- classdata_source
- std::stringfile_name= ""
- A string that contains the name of the file with the dataset to read.
- Getter
std::string get_filename() const
- chardelimiter= default_delimiter
- A character that represents the delimiter between separate features in the input file.
- Getter
char get_delimter() const
- read_optionsoptions= default_read_options
- Value that stores read options to be applied during reading of the input file. Enabledparse_headeroption indicates that the first line in the input file is processed as a header record with features names.
- Getter
read_options get_read_options() const
Reading oneapi::dal::read<Object>(...)
oneapi::dal::read<Object>(...)
Args
template <typename Object>
class read_args {
public:
read_args();
};
- template<typenameObject>classread_args
- read_args()
- Creates args for the read operation with the default attribute values.
Operation
- Template Parameters
- Object– oneDAL object type that is produced as a result of reading from the data source.
- DataSource– CSV data sourcecsv::data_source.
Usage example
using namespace oneapi;
const auto data_source = dal::csv::data_source("data.csv", ',');
const auto table = dal::read<dal::table>(data_source);