Merge pull request #5

feat/section17

Author: 0bvim

.gitignore

@@ -19,3 +19,4 @@
 
 # Go workspace file
 go.work
+.idea

src/udemy/go_ted/section17/composition.go

@@ -0,0 +1,33 @@
+package main
+
+import "fmt"
+
+// this exercice is about data type, aka, aggregate data type, aka, complex data type
+
+type Engine struct {
+	engineType string
+	fuelType   string
+	cylinders  int
+}
+
+func (e *Engine) Start() {
+	fmt.Println("Engine Start")
+}
+
+type Car struct {
+	Engine     // embedding the Engine Struct
+	color      string
+	model      string
+	doorNumber int
+}
+
+func (c *Car) Bip() {
+	fmt.Println("Car Bip")
+}
+
+func main() {
+	car := Car{}
+	car.Start()
+	car.Bip()
+
+}

src/udemy/go_ted/section17/embedded_struct.go

@@ -0,0 +1,58 @@
+package main
+
+import "fmt"
+
+type person struct {
+	first string
+	last  string
+	age   int
+}
+
+type secretAgent struct {
+	// agent person // this way you need to use dots to access
+	person // this way is really embedded, you just need to populate and can access inside field directly
+	ltk    bool
+	first  string // you can hava a parameter with same name that have in embedded struct param
+}
+
+func main() {
+	sa1 := secretAgent{
+		person: person{
+			first: "James",
+			last:  "Bond",
+			age:   27,
+		},
+		first: "Steve vai",
+		ltk:   true,
+	}
+
+	p2 := person{
+		first: "Jenny",
+		last:  "MoneyPenny",
+		age:   27,
+	}
+
+	// anonymous struct
+	p1 := struct {
+		first string
+		last  string
+		age   int
+	}{
+		first: "James",
+		last:  "Bond",
+		age:   32,
+	}
+
+	fmt.Println(sa1)
+	fmt.Println(p2)
+	fmt.Println(p1)
+	fmt.Printf("P1 type = %T\n", p1)
+
+	fmt.Printf("%T\t%#v\n", sa1, p2)
+	fmt.Printf("sa1: %v\n", sa1)
+
+	fmt.Printf("sa1.first: %v\n", sa1.age)
+	fmt.Printf("sa1.last: %v\n", sa1.last)
+	fmt.Printf("sa1.age: %v\n", sa1.age)
+	fmt.Println(sa1.first, sa1.person.first)
+}

src/udemy/go_ted/section17/main.go

@@ -0,0 +1,33 @@
+package main
+
+import "fmt"
+
+type person struct {
+	first string
+	last  string
+	age   int
+}
+
+func main() {
+	p1 := person{
+		first: "James",
+		last:  "Bond",
+		age:   32,
+	}
+
+	p2 := person{
+		first: "Jenny",
+		last:  "MoneyPenny",
+		age:   27,
+	}
+
+	fmt.Println(p1)
+	fmt.Println(p2)
+
+	fmt.Printf("%T\t%#v\n", p1, p2)
+	fmt.Printf("p1: %v\n", p1)
+
+	fmt.Printf("p1.first: %v\n", p1.first)
+	fmt.Printf("p1.last: %v\n", p1.last)
+	fmt.Printf("p1.age: %v\n", p1.age)
+}

src/udemy/go_ted/section18/more_embed.go

@@ -0,0 +1,69 @@
+package main
+
+import "fmt"
+
+type engine struct {
+	eletric bool
+}
+
+type vehicle struct {
+	engine engine
+	make   string
+	model  string
+	color  string
+	doors  int8
+}
+
+func main() {
+	v1 := vehicle{
+		engine: engine{
+			eletric: false,
+		},
+		make:  "idk",
+		model: "Ferrari Black",
+		color: "Dark black deep blue",
+		doors: 4,
+	}
+	v2 := vehicle{
+		engine: engine{
+			eletric: true,
+		},
+		make:  "idk",
+		model: "Mazda Speed",
+		color: "Red",
+		doors: 5,
+	}
+	{
+		fmt.Println(v1, v2)
+		fmt.Printf("V1 Specs:\neletric: %v\nMake: %v\nModel: %v\nColor: %v\nDoors: %v\n",
+			v1.engine.eletric, v1.make, v1.model, v1.color, v1.doors)
+		fmt.Printf("\nV2 Specs:\neletric: %v\nMake: %v\nModel: %v\nColor: %v\nDoors: %v\n",
+			v2.engine.eletric, v2.make, v2.model, v2.color, v2.doors)
+	}
+
+	// about anonymous struct again
+	{
+		p1 := struct {
+			first     string
+			friends   map[string]int
+			favDrinks []string
+		}{
+			first: "vinicius",
+			friends: map[string]int{
+				"stete": 24,
+				"lila":  4,
+			},
+			favDrinks: []string{"Spiced Chai", "Fruit Juice"},
+		}
+		fmt.Println(p1)
+		fmt.Printf("My first name is %v\n", p1.first)
+		for key, value := range p1.friends {
+			fmt.Printf("My friend %v is %v years old: \n", key, value)
+		}
+
+		fmt.Println("favDrinks:")
+		for _, drink := range p1.favDrinks {
+			fmt.Println(drink)
+		}
+	}
+}

src/udemy/go_ted/section18/struct_with_slices.go

@@ -0,0 +1,50 @@
+package main
+
+import "fmt"
+
+type person struct {
+	firstName   string
+	lastName    string
+	favIceCream []string
+}
+
+func main() {
+	p1 := person{
+		firstName:   "John",
+		lastName:    "Smith",
+		favIceCream: []string{"Vanilla", "Chocolatte"},
+	}
+
+	p2 := person{
+		firstName:   "Paul",
+		lastName:    "McCartney",
+		favIceCream: []string{"Strawberry", "Mint"},
+	}
+
+	{
+		fmt.Println(p1.firstName, p1.lastName+" likes of following flavors:")
+		for i, v := range p1.favIceCream {
+			fmt.Printf("%v - %v\n", i+1, v)
+		}
+
+		println()
+		fmt.Println(p2.firstName, p2.lastName+" likes of following flavors:")
+		for i, v := range p2.favIceCream {
+			fmt.Printf("%v - %v\n", i+1, v)
+		}
+	}
+	fmt.Println("----------------------")
+	{
+		people_store := map[string]person{
+			p1.lastName: p1,
+			p2.lastName: p2,
+		}
+
+		fmt.Println(people_store[p1.lastName].firstName, people_store[p1.lastName].lastName)
+		for _, value := range people_store {
+			for _, v2 := range value.favIceCream {
+				fmt.Println(v2)
+			}
+		}
+	}
+}

src/udemy/go_ted/section19/function.go

@@ -0,0 +1,18 @@
+package main
+
+import "fmt"
+
+func main() {
+	foo()
+	foo1("xpto")
+}
+
+// no params and no return
+func foo() {
+	fmt.Println("I am from foo")
+}
+
+// no return
+func foo1(str string) {
+	fmt.Println("I am from foo", str)
+}