Golang two-dimensional slice initialization

package main

import "fmt"

func main() {
    // 方法0
    row, column := 3, 4
    var answer [][]int
    for i := 0; i < row; i++ {
        inline := make([]int, column)
        answer = append(answer, inline)
    }
    fmt.Println(answer)

    // 方法1
    answer1 := make([][]int, row)
    for i := range answer1 {
        answer1[i] = make([]int, column)
    }
    fmt.Println(answer1)
}
// [[0 0 0 0] [0 0 0 0] [0 0 0 0]]
// [[0 0 0 0] [0 0 0 0] [0 0 0 0]]

Golang create a two-dimensional slice compared to C ++, JAVA and other language, to be a little troublesome, hereby record it.