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nlohmann::json_pointer::pop_front

void pop_front();

Remove the first reference token.

Exceptions

Throws out_of_range.405 if the JSON pointer has no parent.

Complexity

Linear in the number of reference tokens in the json_pointer.

Examples

Example

The example shows the usage of pop_front.

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

using json = nlohmann::json;

int main()
{
    // create empty JSON Pointer
    json::json_pointer ptr("/foo/bar/baz");
    std::cout << "\"" << ptr << "\"\n";

    // call pop_front()
    ptr.pop_front();
    std::cout << "\"" << ptr << "\"\n";

    ptr.pop_front();
    std::cout << "\"" << ptr << "\"\n";

    ptr.pop_front();
    std::cout << "\"" << ptr << "\"\n";
}

Output:

"/foo/bar/baz"
"/bar/baz"
"/baz"
""

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