Method to declare an slice (abstraction of array)
func array() ([]int) {
arr := []int{0,1,2,3,4}
return arr
}Maps which ressemble Record in typescript
func vertices() (map[int]string) {
vertices := make(map[int]string)
vertices[3] = "triangle"
vertices[4] = "square"
vertices[5] = "pentagon"
vertices[6] = "hexagon"
return vertices
}Basic loop
func loops() {
arr := array()
for index, entry := range arr {
fmt.Println("index:", index)
fmt.Println("element:", entry)
}
}Calculating srt
func sqrt(x float64) (float64, error) {
if x < 0 {
return 0, errors.New("undefined for negative numbers")
}
return math.Sqrt(x), nil
}Structs
type person struct {
name string
age int
gender string
etnicity string
}
func structHandle() (person) {
p := person{name: "Rodrigo", age: 33, gender: "male", etnicity: "black"}
return p
}Pointer
func pointer() (int) {
i := 7
incrementPointer(&i)
return i
}
func incrementPointer(x *int) {
*x++
}Output from main
[0 1 2 3 4]
map[3:triangle 4:square 5:pentagon 6:hexagon]
index: 0
element: 0
index: 1
element: 1
index: 2
element: 2
index: 3
element: 3
index: 4
element: 4
4
{Rodrigo 33 male black}
8