go nested slice

Sure! Here is an example of working with nested slices in Go:

package main

import "fmt"

func main() {
    // Create a nested slice
    nestedSlice := [][]int{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}

    // Accessing elements in the nested slice
    fmt.Println(nestedSlice[0][0]) // Output: 1
    fmt.Println(nestedSlice[1][2]) // Output: 6

    // Modifying elements in the nested slice
    nestedSlice[2][1] = 10
    fmt.Println(nestedSlice) // Output: [[1 2 3] [4 5 6] [7 10 9]]
}

Explanation: 1. First, we create a nested slice using the shorthand syntax [][]int{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}. This creates a slice of slices, where each inner slice contains integers. In this example, we have a 3x3 matrix represented as a nested slice.

1. To access elements in the nested slice, we use the indexing syntax nestedSlice[i][j], where i represents the row index and j represents the column index. For example, nestedSlice[0][0] returns the element at the first row and first column, which is 1. Similarly, nestedSlice[1][2] returns the element at the second row and third column, which is 6.

2. We can also modify elements in the nested slice using the same indexing syntax. In the example, nestedSlice[2][1] = 10 modifies the element at the third row and second column, changing it from 8 to 10. The resulting nested slice is [[1 2 3] [4 5 6] [7 10 9]].

This example demonstrates how to create, access, and modify elements in a nested slice in Go. Nested slices are useful for representing multi-dimensional data structures, such as matrices or grids.