add: unfinished code. people are having problems

14-arrays/_experimental/_14-arrays/06-comparing-arrays/01-equal-arrays/main.go

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	a := [3]int{6, 9, 3}
+	b := [3]int{6, 9, 3}
+
+	if a == b {
+		fmt.Println("they're equal!")
+
+		// they're comparable
+		// since their types are identical
+		fmt.Printf("1st array's type is %T\n", a)
+		fmt.Printf("2nd array's type is %T\n", b)
+
+		// go compares arrays like this
+		// it compares the elements one by one
+		fmt.Println(a[0] == b[0])
+		fmt.Println(a[1] == b[1])
+		fmt.Println(a[2] == b[2])
+	}
+}

14-arrays/_experimental/_14-arrays/06-comparing-arrays/02-not-equal-arrays/main.go

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	a := [3]int{6, 9, 3}
+	b := [3]int{3, 9, 6}
+
+	if a == b {
+		fmt.Println("they're equal!")
+	} else {
+		fmt.Println("they're not equal! a==b?", a == b)
+
+		// but, they're comparable
+		// since their types are identical
+		fmt.Printf("1st array's type is %T\n", a)
+		fmt.Printf("2nd array's type is %T\n", b)
+
+		// go compares arrays like this
+		// it compares the elements one by one
+		fmt.Println(a[0] == b[0]) // false
+		fmt.Println(a[1] == b[1]) // true
+		fmt.Println(a[2] == b[2]) // false
+
+		// actually Go will quit comparing these arrays
+		//   once it sees unequal items
+		//
+		// so, it will stop the comparison (short-circuit)
+		//   when it sees the first item is false
+		//   and it will return false
+	}
+}

14-arrays/_experimental/_14-arrays/06-comparing-arrays/03-comparability/main.go

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+func main() {
+	// these two arrays not comparable
+	// their types are different
+
+	// uncomment all the code below and observe the error
+
+	// a := [3]int{6, 9, 3}
+	// b := [2]int{6, 9}
+
+	// you can't ask this question
+
+	// if a == b {
+	// 	fmt.Println("they're equal!")
+	// }
+}

14-arrays/_experimental/_14-arrays/06-comparing-arrays/04-example/main.go

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	a := [2]string{"jane", "lina"}
+	b := [2]string{"jane", "lina"}
+	c := [2]string{"mike", "joe"}
+
+	fmt.Println("a==b?", a == b) // equal
+	fmt.Println("a==c?", a == c) // not equal
+
+	// cannot compare
+	d := [3]string{"jane", "lina"}
+	// fmt.Println("c==d?", c == d)
+
+	fmt.Printf("type of c is %T\n", c)
+	fmt.Printf("type of d is %T\n", d)
+}