actionscript-3 - 是否首选导入类(例如 import flash.events.MouseEvent )而不是包的全部内容(例如 import flash.events.*)

Question

在代码开头指定您打算使用的类、函数或命名空间是否有好处？

Answer 1

the reference says :

If you import a class but do not use it in your script, the class is not exported as part of the SWF file. This means you can import large packages without being concerned about the size of the SWF file; the bytecode associated with a class is included in a SWF file only if that class is actually used. One disadvantage of importing classes that you do not need is that you increase the likelihood of name collisions.

但是，(对我而言)有一个在后面的代码中使用的类的确切列表要方便得多