Section10-Finished

Section10/84.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"unsafe"
+)
+
+func main() {
+	// s1 := []int{10, 20, 30, 40, 50}
+	// s3, s4 := s1[0:2], s1[1:3]
+
+	// s3[1] = 600
+
+	// fmt.Println(s1)
+	// fmt.Println(s4)
+
+	// arr1 := [4]int{10, 20, 30, 40}
+	// slice1, slice2 := arr1[0:2], arr1[1:3]
+
+	// arr1[1] = 2
+
+	// fmt.Println(slice1)
+	// fmt.Println(slice2)
+	// fmt.Println(arr1)
+
+	cars := []string{"Ford", "Honda", "Audi", "Range Rover"}
+	newCars := []string{}
+
+	newCars = append(newCars, cars[0:2]...)
+
+	cars[0] = "Nissan"
+	fmt.Println(cars, newCars)
+
+	s1 := []int{10, 20, 30, 40, 50}
+	newSlice := s1[0:3]
+	fmt.Println(len(newSlice), cap(newSlice))
+
+	newSlice = s1[2:5]
+	fmt.Println(len(newSlice), cap(newSlice))
+
+	fmt.Printf("%p\n", &s1)
+
+	fmt.Printf("%p %p \n", &s1, &newSlice)
+
+	newSlice[0] = 1000
+	fmt.Println("s1: ", s1)
+
+	a := [5]int{1, 2, 3, 4, 5}
+	s := []int{1, 2, 3, 4, 5}
+
+	fmt.Printf("array's size in bytes: %d \n", unsafe.Sizeof(a))
+	fmt.Printf("slice's size in bytes: %d \n", unsafe.Sizeof(s))
+
+}

Section10/87.go

@@ -0,0 +1,32 @@
+package main
+
+import "fmt"
+
+func main() {
+	var nums []int
+	fmt.Printf("%#v\n", nums)
+
+	fmt.Printf("Lenght: %d, Capacity: %d \n", len(nums), cap(nums))
+
+	nums = append(nums, 1, 2)
+	fmt.Printf("Lenght: %d, Capacity: %d \n", len(nums), cap(nums))
+
+	nums = append(nums, 3)
+	fmt.Printf("Lenght: %d, Capacity: %d \n", len(nums), cap(nums))
+
+	nums = append(nums, 4)
+	fmt.Printf("Lenght: %d, Capacity: %d \n", len(nums), cap(nums))
+
+	nums = append(nums, 5)
+	fmt.Printf("Lenght: %d, Capacity: %d \n", len(nums), cap(nums))
+
+	nums = append(nums[0:4], 200, 300, 400, 500, 600)
+	fmt.Printf("Lenght: %d, Capacity: %d \n", len(nums), cap(nums))
+	fmt.Println(nums)
+
+	letters := []string{"A", "B", "C", "D", "E", "F"}
+	letters = append(letters[:1], "X", "Y")
+	fmt.Println(letters, len(letters), cap(letters))
+	fmt.Println(letters[3:6])
+
+}