commit d028587086809a6da8e1f407818debc09b0538d3
author Seth Ladd <sethladd@google.com> Fri Jun 23 08:07:01 2017 -0700
committer Seth Ladd <sethladd@google.com> Fri Jun 23 08:07:01 2017 -0700
tree 50cd8a66e8f6d32b6a0563d238bd751f27bb56f5
parent 22d4733e2aab54c0dd1cd5786c20cba233028a76

tweak from review

lib/usage.dart

diff --git a/lib/usage.dart b/lib/usage.dart
index c5d2ed8..6140f9d 100644
--- a/lib/usage.dart
+++ b/lib/usage.dart
@@ -244,18 +244,14 @@
   String get clientId => '00000000-0000-4000-0000-000000000000';
 
   Future sendScreenView(String viewName, {Map<String, String> parameters}) {
-    if (parameters == null) {
-      parameters = <String, String>{};
-    }
+    parameters ??= <String, String>{};
     parameters['viewName'] = viewName;
     return _log('screenView', parameters);
   }
 
   Future sendEvent(String category, String action, {String label, int value,
       Map<String, String> parameters}) {
-    if (parameters == null) {
-      parameters = <String, String>{};
-    }
+    parameters ??= <String, String>{};
     return _log('event', {
       'category': category,
       'action': action,