It's because your method receivers are values, not pointers:
func (b Builder) setFirst() {
b.firstElement = "First element"
}
In Go, method receivers work a lot like regular function arguments. When
you call the above method, you're operating on a copy of the Builder
struct. Any time you pass
Hi,
https://go.dev/doc/faq#methods_on_values_or_pointers
>First, and most important, does the method need to modify the receiver? If it
>does, the receiver must be a pointer. (Slices and maps act as references, so
>their story is a little more subtle, but for instance to change the length of
>
