starting go by example

5-go-by-example/8-arrays.go

@@ -0,0 +1,33 @@
+package main
+
+import "fmt"
+
+// an array is a numbered sequence of elements of a specific length
+func main() {
+
+	// array a that will hold exactly 5 ints
+	var a [5]int
+	fmt.Println("emp:", a)
+
+	// set/get a value at an index using the array[index]=value syntax
+	a[4] = 100
+	fmt.Println("set:", a)
+	fmt.Println("get:", a[4])
+
+	// builtin len returns the length of an array
+	fmt.Println("len:", len(a))
+
+	// declare and initialize an array in one line
+	b := [5]int{1, 2, 3, 4, 5}
+	fmt.Println("dcl:", b)
+
+	// Array types are one-dimensional
+	// compose types to build multi-dimensional data structures
+	var twoD [2][3]int
+	for i := 0; i < 2; i++ {
+		for j := 0; j < 3; j++ {
+			twoD[i][j] = i + j
+		}
+	}
+	fmt.Println("2d: ", twoD)
+}