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learngo/x-tba/tictactoe/09-slices/init.go

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Go
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package main
// initCells initialize the played cells to empty
func initCells() {
// // create a string with empty cells
// // " , , , , , , , , ,"
// var s string
// // number of cells = maxTurns
// for i := 1; i <= maxTurns; i++ {
// s += emptyCell // add an empty move
// s += "," // separate the cells with a comma
// }
// // strings are immutable — you should create a new one
// // fortunately: most of this happens in the stack memory
// // " , , , , , , , , ," -> // " , , , , , , , , "
// s = strings.TrimSuffix(s, ",")
// // store the cells in a slice (slice = list, array in other langs)
// // Split() returns a list of strings: []string (a string slice)
// // [" ", " ", " ", " ", " ", " ", " ", " ", " " ]
// cells = strings.Split(s, ",")
// Right way:
// cells = []string{" ", " ", " ", " ", " ", " ", " ", " ", " "}
//
// Or:
cells = make([]string, maxTurns)
for i := range cells {
cells[i] = emptyCell
}
}