Registration tree mode

Register tree mode is also called register mode or register mode . Register tree mode registers an object instance to a global object tree , Pick pattern design methods from the object tree when necessary . Unlike fruit trees , The fruit can only be picked once , The instances on the registration tree can be obtained countless times

advantage ：

After using the registration tree pattern , For example , We can better coordinate management arrangements , It is as convenient and practical as using global variables

Use ：

You can get the object instance through set() Save to the registration tree , adopt get() Get the object instance in the registration tree ,_unset() Delete the object instance in the registration tree