instance variable造句怎么写

These instance variables are not reset and, if they are not null, are used to provide the username and password on every request.

If you create an instance variable in your controller, that variable will magically be available to your view template.

Next, it has several instance variables.

Unlike instance variables, class variables are associated with all objects of a particular class and not with individual objects.

As mentioned earlier, each object can also cache the JNDI references it USES in instance variables, so that each object only has to access a reference one time.

With each key, an instance variable is created on the object with that name and data.

If you scope variables appropriately and reduce the use of instance variables, you can reduce this kind of object retention.

Notice the instance variables (or ivars, as Cocoa and Cappuccino usually refer to them) for your controller in Listing 3.

These instance variables are only used if the other two sources of username and password are null, and are not reset after each use, so they can potentially be used on every request.