nlohmann::json_pointer::pop_front¶

voidpop_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>
usingjson=nlohmann::json;
intmain()
{
// create empty JSON Pointer
json::json_pointerptr("/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"
""

Version history¶

Added in version 3.12.x.