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main.go
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main.go
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package main
import (
"fmt"
)
func main() {
build := dateBuilder()
data := build.setYear(2018).setMonthOfYear(7).setDayOfMonth(17).build()
fmt.Println(data)
build = dateBuilder()
data = build.setMonthOfYear(7).setDayOfMonth(17).build()
fmt.Println(data)
}
func dateBuilder() date {
return date{}
}
type date struct {
year int
monthOfYear int
dayOfMonth int
}
func (d *date) setYear(value int) *date {
d.year = value
return d
}
func (d *date) setMonthOfYear(value int) *date {
d.monthOfYear = value
return d
}
func (d *date) setDayOfMonth(value int) *date {
d.dayOfMonth = value
return d
}
func (d *date) build() *date {
clone := &date{}
clone.year = d.year
clone.monthOfYear = d.monthOfYear
clone.dayOfMonth = d.dayOfMonth
return clone
}