What is mean of Method?
The Method means a function of a class in OOP.
Value vs Pointer receiver
There are two ways to receive the structure.
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| package main
type Rect struct {
width, height int
}
// Value receiver
func (r Rect) areaWithValue() int {
r.width++
return r.width * r.height
}
// Pointer receiver
func (r *Rect) areaWithPointer() int {
r.width++
return r.width * r.height
}
func main() {
rect := Rect{10, 20}
println(rect.areaWithValue()) // 220
println(rect.width) // 10
println(rect.areaWithPointer()) // 220
println(rect.width) // 11
}
|
CozyFex