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https://github.com/chubin/cheat.sheets
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24 lines
650 B
Plaintext
24 lines
650 B
Plaintext
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// There is no subclassing in Go. Instead, there is interface and struct embedding.
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// ReadWriter implementations must satisfy both Reader and Writer
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type ReadWriter interface {
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Reader
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Writer
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}
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// Server exposes all the methods that Logger has
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type Server struct {
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Host string
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Port int
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*log.Logger
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}
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// initialize the embedded type the usual way
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server := &Server{"localhost", 80, log.New(...)}
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// methods implemented on the embedded struct are passed through
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server.Log(...) // calls server.Logger.Log(...)
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// the field name of the embedded type is its type name (in this case Logger)
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var logger *log.Logger = server.Logger
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