practice/go/make_board/main.go

package main

import (
	"errors"
	"fmt"
	"log"
)

func main() {
	const boardY int = 7
	const boardX int = 12

	board, err := makeBoard(boardY, boardX, "_")

	if err != nil {
		log.Fatal(err)
	}

	// Pretend that the player did something in the middle
	playerY := boardY / 2
	playerX := boardX / 2

	board[playerY][playerX] = "@"

	printBoard(board)

}

func makeBoard(sizeY, sizeX int, symbol string) ([][]string, error) {
	//Make an array of empty strings
	// Rows

	if sizeY < 1 || sizeX < 1 {
		err := errors.New("Board 'x' and 'y' values must both be greater than 1!")
		return nil, err
	}

	board := make([][]string, sizeY)

	for y := 0; y < sizeY; y++ {
		//Make each array an array of empty strings
		//cols
		board[y] = make([]string, sizeX)
		// and populate em
		for x := 0; x < sizeX; x++ {
			board[y][x] = symbol
		}
	}
	return board, nil
}

func printBoard(board [][]string) {
	for y := 0; y < len(board); y++ {
		for x := 0; x < len(board[y]); x++ {
			fmt.Print(board[y][x])
		}
		fmt.Println()
	}
}