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Defined in header <fkYAML/yaml_version_type.hpp>

fkyaml::yaml_version_type

enum class yaml_version_type
{
    VERSION_1_1,
    VERSION_1_2,
};

This enumeration collects the used versions of YAML specification. It is used as meta data of a basic_node and the following basic_node's functions rely on it:

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

int main() {
    char input[] = "%YAML 1.2\n"
                   "---\n"
                   "foo: bar\n";

    // deserialize a YAML formatted string.
    fkyaml::node n = fkyaml::node::deserialize(input);

    // query the YAML version by calling get_yaml_version_type().
    std::cout << std::boolalpha;
    std::cout << (n.get_yaml_version_type() == fkyaml::yaml_version_type::VERSION_1_2) << std::endl;

    // overwrite the YAML version to 1.1.
    n.set_yaml_version_type(fkyaml::yaml_version_type::VERSION_1_1);

    // query the YAML version again.
    std::cout << (n.get_yaml_version_type() == fkyaml::yaml_version_type::VERSION_1_1) << std::endl;

    return 0;
}

output: 

true
true

See Also