Dear all 
I create the expense tracker app
but I found when I delete one record ，the comparison as below does not work 
expenses[i]!==expense 
so it will result in the record can not remove from list and it should have been deleted but always display in the page
anyone have ideas？
in fact I know one method is get the latest list in the controller and set the list in the component
I just do not know why the source does not work but the salesforce publish the not work source in the document
whether only me meet this issue？
----------------------​------------------source----​----------------------​----------------------​----------------------
deleteExpense : function(component, expense, callback) {
// Call the Apex controller and update the view in the callback
var action = component.get("c.deleteExpense");
action.setParams({
"expense": expense
});
action.setCallback(this, function(response) {
var state = response.getState();
if (state === "SUCCESS") {
// Remove only the deleted expense from view
var expenses = component.get("v.expenses");
var items = [];
for (i = 0; i < expenses.length; i++) {
if(expenses[i]!==expense) {
items.push(expenses[i]);
}
}
component.set("v.expenses", items);
// Other client-side logic
}
});
$A.enqueueAction(action);
}