json/doc/examples/flatten.cpp

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#include <iostream>
#include <nlohmann/json.hpp>
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using json = nlohmann::json;
int main()
{
// create JSON value
json j =
{
{"pi", 3.141},
{"happy", true},
{"name", "Niels"},
{"nothing", nullptr},
{
"answer", {
{"everything", 42}
}
},
{"list", {1, 0, 2}},
{
"object", {
{"currency", "USD"},
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{"value", 42.99}
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}
}
};
// call flatten()
std::cout << std::setw(4) << j.flatten() << '\n';
}