How to create multidimensional array in golang?

Question

I need to create a 2 dimensional string array as shown below -
matrix = [['cat,'cat','cat'],['dog','dog']]

Code:-
package main

import (
    "fmt"
)

func main() {
    { // using append

    var matrix [][]string
    matrix[0] = append(matrix[0],'cat')
        fmt.Println(matrix)
    }
}

Error:-
panic: runtime error: index out of range

goroutine 1 [running]:
main.main()
    /tmp/sandbox863026592/main.go:11 +0x20

Chris Gregori · Accepted Answer

You have a slice of slices, and the outer slice is nil until it's initialized: matrix := make([][]string, 1) matrix[0] = append(matrix[0],'cat') fmt.Println(matrix) Or: var matrix [][]string matrix = append(matrix, []string{"cat"}) fmt.Println(matrix) Or: var matrix [][]string var row []string row = append(row, "cat") matrix = append(matrix, row)

Go Language

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