lean into examples

examples/variables/variables.go

@@ -0,0 +1,14 @@
+package main
+
+import "fmt"
+
+func main() {
+    // `var` declares 1 or more variables. The type comes
+    // at the end.
+    var x string = "Hello world"
+    fmt.Println(x)
+
+    // An example of declaring multiple `int` variables.
+    var a, b int = 1, 2
+    fmt.Println(a, b)
+}

examples/variables/variables.sh

@@ -0,0 +1,3 @@
+$ go run variables.go
+Hello world
+1 2