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# nlohmann::json_pointer::parent_pointer

    json_pointer parent_pointer() const;

Returns the parent of this JSON pointer.

## Return value

Parent of this JSON pointer; in case this JSON pointer is the root, the root itself is returned.

## Complexity

Linear in the length of the JSON pointer.

## Examples

Example

The example shows the result of `parent_pointer` for different JSON Pointers.

    #include <iostream>
    #include <nlohmann/json.hpp>

    using json = nlohmann::json;

    int main()
    {
        // different JSON Pointers
        json::json_pointer ptr1("");
        json::json_pointer ptr2("/foo");
        json::json_pointer ptr3("/foo/0");

        // call parent_pointer()
        std::cout << std::boolalpha
                  << "parent of \"" << ptr1 << "\" is \"" << ptr1.parent_pointer() << "\"\n"
                  << "parent of \"" << ptr2 << "\" is \"" << ptr2.parent_pointer() << "\"\n"
                  << "parent of \"" << ptr3 << "\" is \"" << ptr3.parent_pointer() << "\"" << std::endl;
    }

Output:

    parent of "" is ""
    parent of "/foo" is ""
    parent of "/foo/0" is "/foo"

## Version history

Added in version 3.6.0.

Last update: May 1, 2022
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