Say I want to pass a pointer to a function and change the value of a struct which that pointer points to by doing so. I would normally do this by dereferencing the pointer:
type Test struct { Value int}
func main() {
var i Test = Test {2}
var p *Test = &i
f(p)
println(i.Value) // 4
}
func f(p *Test) {
*p = Test{4}
}
My question is, why this code doesn't change the value
type Test struct { Value int}
func main() {
var i Test = Test {2}
var p *Test = &i
f(p)
println(i.Value) // 2
}
func f(p *Test) {
// ?
p = &Test{4}
}
while this one does:
type Test struct { Value int}
func main() {
var i Test = Test {2}
var p *Test = &i
f(p)
println(i.Value) // 4
}
func f(p *Test) {
p.Value = 4
}