Purpose:
This is considered to be an ANTI-PATTERN! We could use dependency injection to replace this pattern.
To have only one instance of object in the application that will handle all calls.
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Purpose:
This is considered to be an ANTI-PATTERN! We could use dependency injection to replace this pattern.
To have only one instance of object in the application that will handle all calls.
转载于:https://www.cnblogs.com/victorchen/p/10832197.html