$http.get(endpoint);
$http.get(endpoint, params);
$http.get(endpoint, params, headers);
$http.get(endpoint, null, headers);
$http.get(endpoint, params, headers, options);

$http.post(endpoint);
$http.post(endpoint, params, data);
$http.post(endpoint, null, data);
$http.post(endpoint, params, data, headers);
$http.post(endpoint, params, data, headers, options);