refactor($compile): move methods of attr object into prototype

We have many instances of this object and we clone them as well (e.g. ng-repeat).
This should save some memory and performance as well.

Double prefixed private properties of attr object:
attr.$element -> attr.$$element
attr.$observers -> attr.$$observers

Update shallowCopy to not copy $$ properties and allow passing optional destination object.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/ng/directive/booleanAttrDirs.js b/src/ng/directive/booleanAttrDirs.js
index f79c02ce..f0182610 100644
--- a/src/ng/directive/booleanAttrDirs.js
+++ b/src/ng/directive/booleanAttrDirs.js
@@ -286,7 +286,7 @@ forEach(BOOLEAN_ATTR, function(propName, attrName) {
       priority: 100,
       compile: function(tpl, attr) {
         return function(scope, element, attr) {
-          attr.$observers[attrName] = [];
+          attr.$$observers[attrName] = [];
           scope.$watch(attr[normalized], function(value) {
             attr.$set(attrName, value);
           });
@@ -305,7 +305,7 @@ forEach(['src', 'href'], function(attrName) {
       priority: 100,
       compile: function(tpl, attr) {
         return function(scope, element, attr) {
-          attr.$observers[attrName] = [];
+          attr.$$observers[attrName] = [];
           attr.$observe(normalized, function(value) {
             attr.$set(attrName, value);
           });