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23-closures.go

@@ -0,0 +1,18 @@
+package main
+
+import "fmt"
+
+func makeEvenGenerator() func() uint {
+    i := uint(0)
+    return func() uint {
+        i += 2
+        return i
+    }
+}
+
+func main() {
+    nextEven := makeEvenGenerator()
+    fmt.Println(nextEven())
+    fmt.Println(nextEven())
+    fmt.Println(nextEven())
+}

24-recursion.go

@@ -0,0 +1,14 @@
+package main
+
+import "fmt"
+
+func factorial(x uint) uint {
+    if x == 0 {
+        return 1
+    }
+    return x * factorial(x-1)
+}
+
+func main() {
+	fmt.Println(factorial(7))
+}