44     json as_json = json::parse(data.begin(), data.end());  variable
45     CHECK(as_json.at(0) == 1);
46     CHECK(as_json.at(1) == 2);
47     CHECK(as_json.at(2) == 3);
48     CHECK(as_json.at(3) == 4);
70     json as_json = json::parse(data);  variable
71     CHECK(as_json.at(0) == 1);
72     CHECK(as_json.at(1) == 2);
73     CHECK(as_json.at(2) == 3);
74     CHECK(as_json.at(3) == 4);
112     json as_json = json::parse(begin, end);  variable
113     CHECK(as_json.at(0) == 1);
114     CHECK(as_json.at(1) == 2);
115     CHECK(as_json.at(2) == 3);
116     CHECK(as_json.at(3) == 4);