Learning about go runes and hacking together some examples.

main.go

... the rest of the main.go file is here...


  var runes []rune
	for _, r := range "Language: 走" {
		runes = append(runes, r)
	}
	fmt.Printf("%q \n", runes)

	var x, y []int
	for i := 0; i < 10; i++ {
		y = appendInt(x, i)
		fmt.Printf("%d cap=%d\t%v\n", i, cap(y), y)
		x = y
	}

}

func appendInt(x []int, i int) []int {
	var z []int
	zlen := len(x) + 1
	if zlen <= cap(x) {
		z = x[:zlen]
	} else {
		zcap := zlen
		if zcap < 2* len(x) {
			zcap = 2 * len(x)
		}
		z = make([]int, zlen, zcap)
		copy(z, x)
	}

	return z
}