Interface combination in Go language (interface included)

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In the go language, one or more interfaces (such as interfaces B, c) can be combined in interface A, which is equivalent to adding a method declared in interface B and C in interface A.

Interfaces can be combined in a way that is equivalent to the method of adding other interfaces to the interface type Reader interface {read ()}type Writer Interface {write ()}//defines the implementation class of the two interfaces above type Myreadwrite Struct{}func (MRW *myreadwrite) Read () {FMT. Println ("Myreadwrite...read")}func (MRW *myreadwrite) write () {FMT. Println ("Myreadwrite...write")}//defines an interface that combines the above two interfaces type Readwriter interface {readerwriter}//The above interfaces are equivalent to: type ReadWriterV2 interface {Read () write ()}//readwriter and ReadWriterV2 two interfaces are equivalent, so can be assigned to each other Func interfaceTest0104 () {MRW: = The &MYREADWRITE{}//MRW object implements the Read () method and the Write () method, so you can assign values to Readwriter and readwriterv2var rw1 readwriter = Mrwrw1.read () Rw1.write () fmt. PRINTLN ("------") var rw2 ReadWriterV2 = Mrwrw2.read () rw2.write ()//At the same time, Readwriter and ReadWriterV2 two interface objects can be assigned to each other RW1 = Rw2rw2 = RW1}