如何在Golang中增加数组大小

Question

Suppose, I have an array

array1 := [5]int {
    1,2,3,4,5,
}

And I need to increase this array size.

• How can I increase array size in go so that I can add additional element?

If I have another array

array2 := [5]int {
    6,7,8,9,10,
}

• How can I append array2 with array1?

Then array1 will print [1,10]

for i:=0; i<len(array1); i++ {
    fmt.Print(array1[i], "," )
}

Output:

1,2,3,4,5,6,7,8,9,10

Answer 1

The only way to 'resize' an array is to make a new one. You can use slices which behaves much like an array but is resized dynamically for you. You use the append method to add items to a slice.

slice1 := []int{1,2,3,4,5}
slice2 := []int{6,7,8,9,10}
slice1 = append(slice1, slice2...)
for v, _ := range slice1 {
   fmt.Println(v)
}