Initial commit

11-if/01-boolean-operators/02-comparison-and-assignability/01/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() {
+	var speed int
+	// speed = "100" // NOT OK
+
+	var running bool
+	// running = 50 // NOT OK
+
+	var force float64
+	// speed = force // NOT OK
+
+	_, _, _ = speed, running, force
+}

11-if/01-boolean-operators/02-comparison-and-assignability/02/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() {
+	var speed int
+	speed = 50 // OK
+
+	var running bool
+	running = true // OK
+
+	var force float64
+	speed = int(force)
+
+	_, _, _ = speed, running, force
+}

11-if/01-boolean-operators/02-comparison-and-assignability/03/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"
+	"strings"
+)
+
+func main() {
+	speed := 100 // #1
+	// speed := 10 // #2
+
+	fast := speed >= 80
+	slow := speed < 20
+
+	fmt.Printf("going fast? %t\n", fast)
+	fmt.Printf("going slow? %t\n", slow)
+
+	fmt.Printf("is it 100 mph? %t\n", speed == 100)
+	fmt.Printf("is it not 100 mph? %t\n", speed != 100)
+
+	fmt.Println(strings.Repeat("-", 25))
+
+	// -------------------------
+	// #3
+	speedB := 150.5
+	faster := speedB > 100 // ok: untyped
+
+	fmt.Println("is the other car going faster?", faster)
+
+	// ERROR: Type Mismatch
+	// faster = speedB > speed
+	faster = speedB > float64(speed)
+	fmt.Println("is the other car going faster?", faster)
+
+	// #4
+	// ERROR:
+	// only numeric values are comparable with
+	// ordering operators: <, <=, >, >=
+
+	// fmt.Println(true > faster)
+}