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As <iostream> is not included in json.hpp any more, all code examples need to include <iostream> now.
49 lines
973 B
C++
49 lines
973 B
C++
#include <iostream>
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#include "json.hpp"
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using json = nlohmann::json;
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int main()
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{
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// create JSON object
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json object =
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{
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{"the good", "il buono"},
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{"the bad", "il cattivo"},
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{"the ugly", "il brutto"}
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};
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// output element with key "the ugly"
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std::cout << object.at("the ugly") << '\n';
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// change element with key "the bad"
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object.at("the bad") = "il cattivo";
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// output changed array
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std::cout << object << '\n';
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// exception type_error.304
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try
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{
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// use at() on a non-object type
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json str = "I am a string";
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str.at("the good") = "Another string";
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}
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catch (json::type_error& e)
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{
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std::cout << e.what() << '\n';
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}
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// exception out_of_range.401
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try
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{
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// try to write at a nonexisting key
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object.at("the fast") = "il rapido";
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}
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catch (json::out_of_range& e)
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{
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std::cout << e.what() << '\n';
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}
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}
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