all tasks

Task/Singleton/Go/singleton-1.go

@@ -0,0 +1,9 @@
+package singlep
+
+// package level data declarations serve as singleton instance variables
+var X, Y int
+
+// package level functions serve as methods for a package-as-a-singleton
+func F() int {
+    return Y - X
+}

Task/Singleton/Go/singleton-2.go

@@ -0,0 +1,14 @@
+package main
+
+import (
+    "fmt"
+    "singlep"
+)
+
+func main() {
+    // dot selector syntax references package variables and functions
+    singlep.X = 2
+    singlep.Y = 3
+    fmt.Println(singlep.X, singlep.Y)
+    fmt.Println(singlep.F())
+}