init.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import (
"fmt"
"math/rand"
"os"
"strconv"
"time"
)
// init is another special function
// Go calls it before the main function
func init() {
rand.Seed(time.Now().UnixNano())
initCells()
}
// initCells initialize the played cells to empty
func initCells() {
for i := range cells {
cells[i] = emptyCell
}
}
func setGameSpeed() {
// args can be used within the if block
// gs and err can be used in the else if and else branches
if args := os.Args; len(args) == 1 {
fmt.Println("Setting game speed to default.")
} else if gs, err := strconv.Atoi(args[1]); err != nil {
fmt.Println("Wrong game speed. Provide an integer.")
} else {
gameSpeed = time.Duration(gs) * time.Second
}
fmt.Printf("Game speed is %q.\n", gameSpeed)
}
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