fix: coding style and file format for chapter 6.

eBook/exercises/chapter_6/fibonacci_closure.go

@@ -1,20 +1,20 @@
-package main
-
-// fib returns a function that returns
-// successive Fibonacci numbers.
-func fib() func() int {
-	a, b := 1, 1
-	return func() int {
-		a, b = b, a+b
-		return b
-	}
-}
-
-func main() {
-	f := fib()
-	// Function calls are evaluated left-to-right.
-	// println(f(), f(), f(), f(), f())
-	for i:=0; i<=9; i++ {
-		println(i+2, f() )
-	}
-}
+package main
+
+// fib returns a function that returns
+// successive Fibonacci numbers.
+func fib() func() int {
+	a, b := 1, 1
+	return func() int {
+		a, b = b, a+b
+		return b
+	}
+}
+
+func main() {
+	f := fib()
+	// Function calls are evaluated left-to-right.
+	// println(f(), f(), f(), f(), f())
+	for i := 0; i <= 9; i++ {
+		println(i+2, f())
+	}
+}