21 lines
348 B
Go
21 lines
348 B
Go
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package main
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import "fmt"
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func do(i interface{}) {
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switch v := i.(type) {
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case int:
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fmt.Printf("Twice %v is %v\n", v, v * 2)
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case string:
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fmt.Printf("%q is %v bytes long\n", v, len(v))
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default:
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fmt.Printf("I don't know about type %T!\n", v)
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}
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}
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func main() {
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do(21)
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do("hello")
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do(true)
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}
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