中韩高清无专码免费入口

2019 Cross Area Table HOTThere is a passage in the video, which deeply hurt me.Command mode belongs to the behavior mode of an object. Command mode encapsulates a request or operation into an object, and separates the responsibility of issuing the command from the responsibility of executing the command through abstraction of the command. The implementation of command mode can provide the functions of revocation and recovery of commands. The specific structure diagram is shown below.First of all, it needs an industry or field that has been reasonably developed. The routine of the whole industry has been clearly and deeply believed that if people cannot practice deliberately in the field of crossing the river by touching stones, blind guidance will easily occur. Without objective evaluation criteria, it is difficult to carry out deliberate practice. Gardening, chefs, consultants, teachers... cannot carry out deliberate practice.2) It is difficult to duplicate the development environment or the hardware of the development environment fails, and it takes a lot of time and energy to re-establish the development environment.