Deep Nesting of Objects

If you need to do multiple operations on a deeply nested object, it's better to store a reference to it in a temporary variable instead of dereferencing it each time. For example, suppose that you want to do a series of operations on a textfield accessible by the following construct:



It's recommended that you store a reference to the textfield in a variable, and use this variable instead of the above construct:



Each dot results in an operation to retrieve a property, in a loop, these operations do add up, so it's better to do it once, store the object in a variable, and re-use it.