nlohmann::json_pointer::push_front¶

voidpush_front(conststring_t&token);
voidpush_front(string_t&&token);

Append an unescaped token at the start of the reference pointer.

Parameters¶

token (in): token to add

Complexity¶

Linear in the number of reference tokens in the json_pointer.

Examples¶

Example

The example shows the result of push_front for different JSON Pointers.

#include<iostream>
#include<nlohmann/json.hpp>
usingjson=nlohmann::json;
intmain()
{
// create empty JSON Pointer
json::json_pointerptr;
std::cout<<"\""<<ptr<<"\"\n";
// call push_front()
ptr.push_front("foo");
std::cout<<"\""<<ptr<<"\"\n";
ptr.push_front("0");
std::cout<<"\""<<ptr<<"\"\n";
ptr.push_front("bar");
std::cout<<"\""<<ptr<<"\"\n";
}

Output:

""
"/foo"
"/0/foo"
"/bar/0/foo"

Version history¶

Added in version 3.12.x.