Initial version of golang examples.

README.md

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+# Golang examples repository
+
+TODO

control_blocks/go.mod

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+module examples/control_blocks
+
+go 1.16

hello/go.mod

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+module examples/hello
+
+go 1.18

hello/hello.go

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+package main
+
+import "fmt"
+
+func main() {
+    fmt.Println("Hello World!!!")
+}

rand/go.mod

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+module examples/rand
+
+go 1.16

rand/rand.go

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+package main
+
+import (
+  "fmt"
+  "math/rand"
+)
+
+func swap(x, y string) (string, string) {
+  return y, x;
+}
+
+func add(x int, y int) int {
+  return x + y;
+}
+
+func main() {
+  fmt.Println("My favourite number is", rand.Intn(10))
+  fmt.Println("Sum is", add(4, 5))
+  a, b := swap("Hello", "World")
+  fmt.Println("A: ", a, "B: ", b)
+}

time/go.mod

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+module examples/time
+
+go 1.16

time/time.go

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+package main
+
+import (
+  "fmt"
+  "time"
+)
+
+func main() {
+  fmt.Println("Welcome to the playground!")
+  fmt.Println("The time is", time.Now())
+}