json/doc/examples/operator_deserialize.cpp

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#include <iostream>
#include <iomanip> // for std::setw
#include "json.hpp"
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using json = nlohmann::json;
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int main()
{
// create stream with serialized JSON
std::stringstream ss;
ss << R"({
"number": 23,
"string": "Hello, world!",
"array": [1, 2, 3, 4, 5],
"boolean": false,
"null": null
})";
// create JSON value and read the serialization from the stream
json j;
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ss >> j;
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// serialize JSON
std::cout << std::setw(2) << j << '\n';
}