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37 lines
656 B
Go
37 lines
656 B
Go
package main
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import "fmt"
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// interface in Go provides both a value and pointer semantic form.
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// An interface can store its own copy of a value (value semantics), or a value can be shared
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// with the interface by storing a copy of the value’s address (pointer semantics).
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// This is where the value/pointer semantics come in for interfaces
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type printer interface {
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print()
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}
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type user struct {
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name string
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}
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func (u user) print() {
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fmt.Println("User Name:", u.name)
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}
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func main() {
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u := user{"Bill"}
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entities := []printer{
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u,
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&u,
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}
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u.name = "Bill_CHG"
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for _, e := range entities {
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e.print()
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}
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}
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func ptest(p printer) {
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p.print()
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}
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