Nissin Kuibu 02

Important ideas Continue:

1. Object creation and Presence time: where is the data required for the object? How do you control the "time to exist" of an object?

Method one, C + + believes that the execution efficiency of the program is the most important, so allow programmers to get the fastest running speed, self-determination of storage and the existence of time-just put the object on the stack or static storage area, while sacrificing flexibility, because the program must be written accurately know the number of objects, the existence of time and type.

Method Two, create the object dynamically in the memory pool and call the memory pool "heap" or "Memory heap". In this way, you do not know how many objects are actually needed, and do not know the time of existence and the exact type, unless you enter a runtime.

Nissin Kuibu 02