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Commit 1b7d9bf

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author
mostafa
committed
interface
1 parent 43e6523 commit 1b7d9bf

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2 files changed

+36
-21
lines changed

2 files changed

+36
-21
lines changed

‎advanced/interface/basic.go

Lines changed: 36 additions & 20 deletions
Original file line numberDiff line numberDiff line change
@@ -1,31 +1,47 @@
11
package main
22

3-
import (
4-
"fmt"
5-
)
3+
import "fmt"
64

7-
//interface definition
8-
type VowelsFinder interface {
9-
FindVowels() []rune
5+
type SalaryCalculator interface {
6+
CalculateSalary() int
107
}
118

12-
type MyString string
9+
type Permanent struct {
10+
JobType string
11+
Salary int
12+
}
1313

14-
//MyString implements VowelsFinder
15-
func (ms MyString) FindVowels() []rune {
16-
var vowels []rune
17-
for _, rune := range ms {
18-
if rune == 'a' || rune == 'e' || rune == 'i' || rune == 'o' || rune == 'u' {
19-
vowels = append(vowels, rune)
20-
}
21-
}
22-
return vowels
14+
type Contractual struct {
15+
JobType string
16+
Salary int
17+
}
18+
19+
func (p Permanent) CalculateSalary() int {
20+
return p.Salary
21+
}
22+
23+
func (c Contractual) CalculateSalary() int {
24+
return c.Salary + 1000
25+
}
26+
27+
func TotalExpense(s SalaryCalculator) {
28+
fmt.Println(s.CalculateSalary())
2329
}
2430

2531
func main() {
26-
name := MyString("Sam Anderson")
27-
var v VowelsFinder
28-
v = name // possible since MyString implements VowelsFinder
29-
fmt.Printf("Vowels are %c", v.FindVowels())
32+
fmt.Println("welcome")
33+
34+
empPermanent := Permanent{
35+
JobType: "permanent",
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Salary: 2000,
37+
}
38+
39+
TotalExpense(empPermanent)
40+
41+
empContarctual := Contractual{
42+
JobType: "contract",
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Salary: 5000,
44+
}
3045

46+
TotalExpense(empContarctual)
3147
}

‎hello.go

Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -5,5 +5,4 @@ import "fmt"
55
func main() {
66
var name string = "Golang" + " " + "Lovers"
77
fmt.Println("Hello, ", name)
8-
98
}

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