Initial data commit

Task/Time-a-function/Go/time-a-function-1.go

@@ -0,0 +1,9 @@
+package empty
+
+func Empty() {}
+
+func Count() {
+    // count to a million
+    for i := 0; i < 1e6; i++ {
+    }
+}

Task/Time-a-function/Go/time-a-function-2.go

@@ -0,0 +1,15 @@
+package empty
+
+import "testing"
+
+func BenchmarkEmpty(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Empty()
+    }
+}
+
+func BenchmarkCount(b *testing.B) {
+    for i := 0; i < b.N; i++ {
+        Count()
+    }
+}

Task/Time-a-function/Go/time-a-function-3.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+    "fmt"
+    "testing"
+)
+
+func empty() {}
+
+func count() {
+    for i := 0; i < 1e6; i++ {
+    }
+}
+
+func main() {
+    e := testing.Benchmark(func(b *testing.B) {
+        for i := 0; i < b.N; i++ {
+            empty()
+        }
+    })
+    c := testing.Benchmark(func(b *testing.B) {
+        for i := 0; i < b.N; i++ {
+            count()
+        }
+    })
+    fmt.Println("Empty function:    ", e)
+    fmt.Println("Count to a million:", c)
+    fmt.Println()
+    fmt.Printf("Empty: %12.4f\n", float64(e.T.Nanoseconds())/float64(e.N))
+    fmt.Printf("Count: %12.4f\n", float64(c.T.Nanoseconds())/float64(c.N))
+}

Task/Time-a-function/Go/time-a-function-4.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+    "fmt"
+    "time"
+)
+
+func from(t0 time.Time) {
+    fmt.Println(time.Now().Sub(t0))
+}
+
+func empty() {
+    defer from(time.Now())
+}
+
+func count() {
+    defer from(time.Now())
+    for i := 0; i < 1e6; i++ {
+    }
+}
+
+func main() {
+    empty()
+    count()
+}