Initial commit

14-arrays/05-array-operations/01-getting-length/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() {
+	ages := [2]int{15, 20}
+
+	// i can directly use `len`
+	fmt.Println(len(ages)) // 2
+
+	// i can also assign its result to a variable
+	l := len(ages)
+	fmt.Println(l) // 2
+
+	// let's print the length of a few arrays
+	l = len([1]bool{true}) // 1
+	fmt.Println(l)
+
+	l = len([3]string{"lina", "james", "joe"}) // 3
+	fmt.Println(l)
+
+	// this array doesn't initialize any elements
+	// but its length is still 5
+	// whether the elements are initialized or not
+	l = len([5]int{})
+	fmt.Println(l) // 5
+	fmt.Println([5]int{})
+}