json/doc/examples/at__size_type.cpp
Niels 457572184c more documentation
In this commit, also the semantics for values skipped via the parser
callback has changed. Now, the top-level value is returned as “null”
instead of “discarded”.
2015-06-24 12:15:51 +02:00

29 lines
564 B
C++

#include <json.hpp>
using namespace nlohmann;
int main()
{
// create JSON array
json array = {"first", "2nd", "third", "fourth"};
// output element at index 2 (third element)
std::cout << array.at(2) << '\n';
// change element at index 1 (second element) to "second"
array.at(1) = "second";
// output changed array
std::cout << array << '\n';
// try to write beyond the array limit
try
{
array.at(5) = "sixth";
}
catch (std::out_of_range)
{
std::cout << "out of range" << '\n';
}
}