27 lines
855 B
C++
27 lines
855 B
C++
#include <iostream>
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#include <iomanip>
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#include <nlohmann/json_view.hpp>
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using json_document = nlohmann::json_document;
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using json_view = nlohmann::json_view;
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int main()
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{
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// one order out of a large incoming batch -- write it straight to a log
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// stream without ever building a basic_json value for it, or for the
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// rest of the batch
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const json_document doc = json_document::parse(R"(
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[{"id": 1, "item": "cable"}, {"id": 2, "item": "adapter"}]
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)");
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const json_view orders = doc.root();
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// compact, for a one-line log entry
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std::cout << orders[1] << '\n';
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// std::setw sets the indentation level, exactly as for basic_json
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std::cout << std::setw(2) << orders[1] << "\n\n";
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// std::setfill changes the indentation character
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std::cout << std::setw(1) << std::setfill('\t') << orders[1] << '\n';
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}
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