RethinkDB native connector work, minor fixes.

ext/librethinkdbxx/test/bench.cc

@@ -0,0 +1,58 @@
+/*
+#include <signal.h>
+#include <ctime>
+#include <chrono>
+#include <rethinkdb.h>
+
+namespace R = RethinkDB;
+std::unique_ptr<R::Connection> conn;
+
+int main() {
+    signal(SIGPIPE, SIG_IGN);
+    try {
+        conn = R::connect();
+    } catch(const R::Error& error) {
+        printf("FAILURE: could not connect to localhost:28015: %s\n", error.message.c_str());
+        return 1;
+    }
+
+    try {
+        printf("running test...\n");
+        auto start = std::chrono::steady_clock::now();
+        R::Datum d = R::range(1, 1000000)
+          .map([]() { return R::object("test", "hello", "data", "world"); })
+          .run(*conn);
+        auto end = std::chrono::steady_clock::now();
+        auto diff = end - start;
+
+        printf("result size: %d\n", (int)d.get_array()->size());
+        printf("completed in %f ms\n", std::chrono::duration<double, std::milli>(diff).count());
+    } catch (const R::Error& error) {
+        printf("FAILURE: uncaught exception: %s\n", error.message.c_str());
+        return 1;
+    }
+}
+*/
+
+#include <iostream>
+#include <rethinkdb.h>
+
+namespace R = RethinkDB;
+
+int main() {
+    auto conn = R::connect();
+    if (!conn) {
+        std::cerr << "Could not connect to server\n";
+        return 1;
+    }
+
+    std::cout << "Connected" << std::endl;
+    R::Cursor databases = R::db_list().run(*conn);
+    for (R::Datum const& db : databases) {
+        std::cout << *db.get_string() << '\n';
+    }
+
+    return 0;
+}
+
+