Question

How to create a slice with make and a smaller array with part of the slice in Go

Answer 1

package main

import "fmt"

func main() {
	arr1 := make([]int, 7)
	view(arr1)

	arr2 := arr1[:3]
	view(arr2)
}

func view(arr []int) {
	fmt.Printf("len=%d cap=%d %v\n", len(arr), cap(arr), arr)
}



/*
run:

len=7 cap=7 [0 0 0 0 0 0 0]
len=3 cap=7 [0 0 0]

*/

 

70+ SQL courses for beginners and professionals