010-scala single-Case object, the associated object of actual combat detailed

010-scala A case study of a single object and associated object

Scala Singleton object in detail the last line of the function is the return value Subproject Scala companion object code The private member of the object can be accessed directly by the class companion class, but cannot be accessed by other classes or objects by the associated class to access the associated object's members. To access a method that calls some elements by name. When the initialization is created, for example: Array (1,2,,34,5,6) actually calls its apply () method

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010-scala single-Case object, the associated object of actual combat detailed