Defined in header <fkYAML/node.hpp>

fkyaml::basic_node::node_t¶

enum class node_t
{
    SEQUENCE,
    MAPPING,
    NULL_OBJECT,
    BOOLEAN,
    INTEGER,
    FLOAT_NUMBER,
    STRING,
};

This enumeration collects the different YAML value types. They are internally used to distinguish the stored values, and the functions is_sequence, is_mapping and is_scalar (with is_null, is_boolean, is_integer, is_float_number, is_string) rely on it.

Types of scalars

There are five enumerators for scalars (NULL_OBJECT, BOOLEAN, INTEGER, FLOAT_NUMBER, STRING) to distinguish between different types of scalars:

boolean_type for boolean scalar values
integer_type for integer scalar values
float_number_type for float number scalar values
string_type for string scalar values

Example

#include <iomanip>
#include <iostream>
#include <fkYAML/node.hpp>

int main() {
    // create YAML nodes.
    fkyaml::node sequence_node = {1, 2, 3};
    fkyaml::node mapping_node = {{"foo", true}, {"bar", false}};
    fkyaml::node null_node;
    fkyaml::node boolean_node = true;
    fkyaml::node integer_node = 256;
    fkyaml::node float_node = 3.14;
    fkyaml::node string_node = "Hello, world!";

    // call type()
    std::cout << std::boolalpha;
    std::cout << (sequence_node.type() == fkyaml::node::node_t::SEQUENCE) << std::endl;
    std::cout << (mapping_node.type() == fkyaml::node::node_t::MAPPING) << std::endl;
    std::cout << (null_node.type() == fkyaml::node::node_t::NULL_OBJECT) << std::endl;
    std::cout << (boolean_node.type() == fkyaml::node::node_t::BOOLEAN) << std::endl;
    std::cout << (integer_node.type() == fkyaml::node::node_t::INTEGER) << std::endl;
    std::cout << (float_node.type() == fkyaml::node::node_t::FLOAT_NUMBER) << std::endl;
    std::cout << (string_node.type() == fkyaml::node::node_t::STRING) << std::endl;

    return 0;
}

output:

true
true
true
true
true
true
true

fkyaml::basic_node::node_t¶

See Also¶