add: first array examples

14-arrays/09-keyed-elements/05-keyed-auto-initialize-ellipsis/main.go

@@ -0,0 +1,36 @@
+// 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() {
+	// ellipsis (...) below calculates the length of the
+	// array automatically
+	rates := [...]float64{
+		// index 0 empty
+		// index 1 empty
+		// index 2 empty
+		// index 3 empty
+		// index 4 empty
+		5: 1.5, // index: 5
+	}
+
+	fmt.Println(rates)
+
+	// above array literal equals to this:
+	//
+	// rates := [6]float64{
+	// 	0.,
+	// 	0.,
+	// 	0.,
+	// 	0.,
+	// 	0.,
+	// 	1.5,
+	// }
+}