nlohmann's json library convert an array to a vector of structs

Question

Say I have a json array that looks like this:

[
  {
    \"Name\": \"test\",
    \"Val\": \"test_val\"
  },
  {
    \"Name\": \"test2\",
    \"Val\": \"test_v         


        

Answer 1

For the automatic get<> to work, you need to provide a mapping between JSON and your struct:

void from_json(const nlohmann::json& j, Test& p) {
    j.at("Name").get_to(p.Name);
    j.at("Val").get_to(p.Val);
}

Then it will work as expected.

auto parsed = json.get<std::vector<Test>>();

Demo: https://godbolt.org/z/9P1mjO