add: type assertion

2019-08-23 17:07:45 +03:00
parent e0b2786fd9
commit 39aed37a88
23 changed files with 291 additions and 48 deletions
--- a/interfaces/05-assertion/puzzle.go
+++ b/interfaces/05-assertion/puzzle.go
@@ -14,10 +14,6 @@ type puzzle struct {
 	price money
 }

-func (p *puzzle) print() {
+func (p puzzle) print() {
 	fmt.Printf("%-15s: %s\n", p.title, p.price.string())
 }
-
-func (p *puzzle) discount(ratio float64) {
-	p.price *= money(1 - ratio)
-}