GO learning - 008 array

test1

package main

import "fmt"

func printArray(myArray [4]int) {
	for index, value := range myArray {
		fmt.Println("index = ", index, " value = ", value)
	}
}

func main() {
	var myArray1 [10]int

	myArray2 := [10]int{1, 2, 3, 4}
	myArray3 := [4]int{11, 22, 33, 44}

	for i := 0; i < len(myArray1); i++ {
		fmt.Println(myArray1[i])
	}

	for index, value := range myArray2 {
		fmt.Println("index = ", index, " value = ", value)
	}

	fmt.Printf("myArray1 types = %T\n", myArray1)
	fmt.Printf("myArray2 types = %T\n", myArray2)
	fmt.Printf("myArray3 types = %T\n", myArray3)

	printArray(myArray3) //传1或2会报错

}

0
0
0
0
0
0
0
0
0
0
index =  0  value =  1
index =  1  value =  2
index =  2  value =  3
index =  3  value =  4
index =  4  value =  0
index =  5  value =  0
index =  6  value =  0
index =  7  value =  0
index =  8  value =  0
index =  9  value =  0
myArray1 types = [10]int
myArray2 types = [10]int
myArray3 types = [4]int
index =  0  value =  11
index =  1  value =  22
index =  2  value =  33
index =  3  value =  44

test2

package main

import "fmt"

func printArray(myArray []int) {
	for _, value := range myArray {
		fmt.Println("value = ", value)
	}

	myArray[0] = 100
}

func main() {

	myArray := []int{1, 2, 3, 4}

	fmt.Printf("myArray type is %T\n", myArray)

	printArray(myArray)

	fmt.Println("===")
	for _, value := range myArray {
		fmt.Println(value)
	}
}

myArray type is []int
value =  1
value =  2
value =  3
value =  4
===
100
2
3
4