nlohmann::json_pointer::back¶
const string_t& back() const;
Return last reference token.
Return value¶
Last reference token.
Exceptions¶
Throws out_of_range.405 if JSON pointer has no parent.
Complexity¶
Constant.
Examples¶
Example
The example shows the usage of back
.
#include <iostream>
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
// different JSON Pointers
json::json_pointer ptr1("/foo");
json::json_pointer ptr2("/foo/0");
// call empty()
std::cout << "last reference token of \"" << ptr1 << "\" is \"" << ptr1.back() << "\"\n"
<< "last reference token of \"" << ptr2 << "\" is \"" << ptr2.back() << "\"" << std::endl;
}
Output:
last reference token of "/foo" is "foo"
last reference token of "/foo/0" is "0"
Version history¶
- Added in version 3.6.0.
- Changed return type to
string_t
in version 3.11.0.
Last update: May 1, 2022