variable reference

Model reference adaptive predictor control for time-varying system with variable time delay

可变纯滞后时变系统模型参考自适应预估控制

Hence a variable of a class type can reference an instance of any descendant type.

因此,类类型的变量可以引用其所有子孙类型的实例.

To facilitate this, the plug-in class implements the singleton pattern: It stores a reference to itself in a private class variable.

为了使这一点更方便，插件类实现单模式（singleton pattern）：它在私有类变量中存储一个自身的引用。

A static variable which holds a reference to the single created instance, if any.

如果存在静态变量的话,使用静态遍历存储创建的单件类的简单实例.

We also used an instance variable to store a reference to the mock object.

我们还使用了实例变量来存储对模仿对象的引用。

Design of Attitude System Based on Model Reference Variable Structure Control for Aerocraft

飞行器模型参考变结构姿态控制系统设计

Q: What is the default value of an object reference declared as an instance variable?

一个对象的缺省值是什么，当以一个实例变量作为参考时？