Merge pull request #317 from appleboy/patch-3

fix: coding style and file format for chapter 6.

eBook/exercises/chapter_6/10to1_recursive.go

@@ -7,7 +7,9 @@ func main() {
 }
 
 func printrec(i int) {
-	if i>10 { return }
+	if i > 10 {
+		return
+	}
 	printrec(i + 1)
 	fmt.Printf("%d ", i)
 }

eBook/exercises/chapter_6/error_returnval.go

@@ -29,7 +29,7 @@ func main() {
 
 func MySqrt(f float64) (float64, error) {
 	//return an error as second parameter if invalid input
-    if (f < 0) {
+	if f < 0 {
 		return float64(math.NaN()), errors.New("I won't be able to do a sqrt of negative number!")
 	}
 	//otherwise use default square root function
@@ -38,7 +38,7 @@ func MySqrt(f float64) (float64, error) {
 
 //name the return variables - by default it will have 'zero-ed' values i.e. numbers are 0, string is empty, etc.
 func MySqrt2(f float64) (ret float64, err error) {
-    if (f < 0) {
+	if f < 0 {
 		//then you can use those variables in code
 		ret = float64(math.NaN())
 		err = errors.New("I won't be able to do a sqrt of negative number!")
@@ -49,6 +49,7 @@ func MySqrt2(f float64) (ret float64, err error) {
 	//automatically return the named return variables ret and err
 	return
 }
+
 /* Output:
 First example with -1: Error! Return values are: NaN I won't be able to do a sqrt of negative number!
 Second example with 5: It's ok! Return values are: 2.23606797749979 <nil>

eBook/exercises/chapter_6/lambda_value.go

@@ -12,6 +12,7 @@ func main() {
 	fv()
 	fmt.Printf("The type of fv is %T", fv)
 }
+
 /* Output:
 Hello World!
 The type of fv is func()

eBook/exercises/chapter_6/mult_returnval.go

@@ -20,5 +20,6 @@ func main() {
 	sum, prod, diff = SumProductDiffN(3, 4)
 	fmt.Println("Sum:", sum, "| Product:", prod, "| Diff:", diff)
 }
+
 // Sum: 7 | Product: 12 | Diff: -1
 // Sum: 7 | Product: 12 | Diff: -1

eBook/exercises/chapter_6/strings_map.go

@@ -7,7 +7,13 @@ import (
 )
 
 func main() {
-	asciiOnly := func(c rune) rune { if c > 127 { return ' ' }; return c }
+	asciiOnly := func(c rune) rune {
+		if c > 127 {
+			return ' '
+		}
+		return c
+	}
 	fmt.Println(strings.Map(asciiOnly, "Jérôme Österreich"))
 }
+
 // J r me  sterreich