Niels Lohmann
061c30310e
- API pages for basic_json_document and basic_json_view, one per member, and for the four aliases, each with an example - features/json_view.md: the problem the view solves, ownership and lifetime, what matches basic_json::parse() and what differs, and when to choose json, ordered_json, SAX, or the view - the examples show why one would use the view, not only how: borrowed vs. owned input, reading a few fields and materializing one subtree, reusing a document across many messages - registered in the mkdocs navigation, llms.txt, the docset, the exceptions page (out_of_range.416), architecture.md, the integration page, and the README; the yyjson credit is added to the README and license.md Signed-off-by: Niels Lohmann <mail@nlohmann.me>
25 lines
751 B
C++
25 lines
751 B
C++
#include <iostream>
|
|
#include <string>
|
|
#include <nlohmann/json_view.hpp>
|
|
|
|
using json_document = nlohmann::json_document;
|
|
|
|
int main()
|
|
{
|
|
std::cout << std::boolalpha;
|
|
|
|
std::string text = R"({"a": 1})";
|
|
|
|
// borrowed: the document only points into `text`; `text` must outlive it
|
|
json_document borrowed = json_document::parse(text);
|
|
std::cout << borrowed.owns_source() << '\n';
|
|
|
|
// owned: parse_copy() always takes its own copy
|
|
json_document copied = json_document::parse_copy(text);
|
|
std::cout << copied.owns_source() << '\n';
|
|
|
|
// owned: an rvalue std::string is moved in, not copied, but still owned
|
|
json_document moved_in = json_document::parse(std::string(text));
|
|
std::cout << moved_in.owns_source() << '\n';
|
|
}
|