awesome-patterns/structural/decorate.go

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2019-10-30 22:31:07 +03:00
package main
type Object func(int) int
func LogDecorate(fn Object) Object {
return func(n int) int {
log.Println("Starting the execution with the integer", n)
result := fn(n)
log.Println("Execution is completed with the result", result)
return result
}
}
func Double(n int) int {
return n * 2
}
func main(){
f := LogDecorate(Double)
f(5)
}
// Starting execution with the integer 5
// Execution is completed with the result 10