deploy: 4155e2938f

examples/basic_json_view__end.cpp

@@ -0,0 +1,27 @@
+#include <iostream>
+#include <nlohmann/json_view.hpp>
+
+using json_document = nlohmann::json_document;
+
+int main()
+{
+    // scan a (possibly large) array of readings for the first one over a
+    // threshold; the loop stops at end() as soon as one is found, and only
+    // the matching reading is ever materialized
+    json_document readings = json_document::parse("[12, 18, 25, 31, 9]");
+    const auto values = readings.root();
+
+    auto it = values.begin();
+    for (; it != values.end(); ++it)
+    {
+        if (it->materialize().get<int>() > 20)
+        {
+            break;
+        }
+    }
+
+    if (it != values.end())
+    {
+        std::cout << "first reading over 20: " << it->materialize().dump() << '\n';
+    }
+}