Memoize date functions that are called excessively to reduce overhead

Author: idpaterson

dashboard/js/app.js

@@ -1816,17 +1816,17 @@ function fixTime(timestamp) {
 	return timestamp;
 }
 
-function utcToString(timestamp) {
+var utcToString = nanomemoize(function utcToString(timestamp) {
 	return (new Date(fixTime(timestamp))).toLocaleString();
-}
+});
 
-function utcToTimeString(timestamp) {
+var utcToTimeString = nanomemoize(function utcToTimeString(timestamp) {
 	return (new Date(fixTime(timestamp))).toLocaleTimeString();
-}
+});
 
-function utcToDateString(timestamp) {
+var utcToDateString = nanomemoize(function utcToDateString(timestamp) {
 	return (new Date(fixTime(timestamp))).toLocaleDateString();
-}
+});
 
 function timeSince(time){
 	if (!time) return "never";
@@ -1919,14 +1919,10 @@ function adjustTimeOffset(time) {
 
 
 
-var memoizedRenders = {};
 app.filter('renderString', ['$sce', function($sce) { 
 	return renderString.bind(null, $sce);
 }]);
-function renderString($sce, value) {
-		if (memoizedRenders[value]) {
-			return memoizedRenders[value];
-		}
+var renderString = nanomemoize(function renderString($sce, value) {
         var i = 0;
         if (!value) return '';
 		var meta = {type: null, options: {}};
@@ -2072,7 +2068,7 @@ function renderString($sce, value) {
 		}
 		memoizedRenders[value] = result;
 		return result;
-    };
+    });
 
 var wuIconForTwcCode = {
 	0:  'tstorms',          // Tornado

dashboard/js/components/40.nano-memoize.min.js

@@ -686,7 +686,7 @@ config.controller('piston', ['$scope', '$rootScope', 'dataService', '$timeout',
 		});
 	};
 
-	$scope.formatVariableValue = function(variable, name) {
+	$scope.formatVariableValue = nanomemoize(function(variable, name) {
 		if ((variable.v == null) && !!name && $scope.localVars) {
 			variable = $scope.copy(variable);
             variable.v = $scope.localVars[name];
@@ -709,7 +709,7 @@ config.controller('piston', ['$scope', '$rootScope', 'dataService', '$timeout',
 			return angular.toJson(variable.v);
 		}
 		return variable.v;
-	}
+	});
 
 	$scope.deleteDialog = function() {
 		$scope.designer.dialog = ngDialog.open({