clone from danieldin95

misc/learn/append.go

@@ -0,0 +1,42 @@
+package main
+
+import "fmt"
+
+func main() {
+	var a = []int{1, 2, 3}
+
+	fmt.Println(a)
+	a0 := append(a, []int{4, 5, 6}...)
+	a0[0] = 9
+	a1 := append(a, []int{7, 8}...)
+	fmt.Println(a, a0)
+	fmt.Println(a, a1)
+
+	a0 = append(a[:3], []int{4, 5, 6}...)
+	a0[0] = 9
+	a1 = append(a[:3], []int{7, 8}...)
+	fmt.Println(a, a0)
+	fmt.Println(a, a1)
+
+	a = make([]int, 0, 1024)
+
+	b := append(a, []int{4, 5, 6}...)
+	fmt.Println(b, a)
+	//fmt.Println(cap(b), len(b))
+	//fmt.Println(cap(a), len(a))
+
+	c := append(b, []int{8, 9}...)
+	c[1] = 10
+	b[0] = 9
+	fmt.Println(c, b)
+	//fmt.Println(cap(c), len(c))
+	//fmt.Println(cap(b), len(b))
+
+	bb := b
+	b = append(b, []int{8, 9}...)
+	bb[2] = 11
+	fmt.Println(b, bb)
+	//fmt.Println(cap(bb), len(bb))
+	//fmt.Println(cap(b), len(b))
+
+}