refactor: use any instead of interface{} (#2886)

[no important files changed]

Author: bernot-dev

exercises/concept/airport-robot/.docs/introduction.md

@@ -67,7 +67,7 @@ It only needs to have all the necessary methods defined.
 
 There is one very special interface type in Go, the **empty interface** type that contains zero methods.
 The empty interface is written like this: `interface{}`.
-In Go 1.18 or higher, `any` can be used as well. It was defined as an alias.
+Since Go 1.18, `any` is an alias for `interface{}`, and is more commonly used.
 
 Since the empty interface has no methods, every type implements it implicitly.
 This is helpful for defining a function that can generically accept any value.

exercises/concept/sorting-room/.docs/instructions.md

@@ -61,7 +61,7 @@ NOTE: we should use the `ExtractFancyNumber` function!
 
 ## 5. Implement `DescribeAnything` which uses them all
 
-This is the main function Jen needs which takes any input (the empty interface means any value at all: `interface{}`).
+This is the main function Jen needs which takes any input.
 `DescribeAnything` should delegate to the other functions based on the type of the value passed in.
 More specifically:
 

exercises/concept/sorting-room/.docs/introduction.md

@@ -33,7 +33,7 @@ A type assertion allows us to extract the interface value's underlying concrete
 For example:
 
 ```go
-var input interface{} = 12
+var input any = 12
 number := input.(int)
 ```
 
@@ -57,7 +57,7 @@ It has the same syntax as a type assertion (`interfaceVariable.(concreteType)`),
 Here is an example:
 
 ```go
-var i interface{} = 12 // try: 12.3, true, int64(12), []int{}, map[string]int{}
+var i any = 12 // try: 12.3, true, int64(12), []int{}, map[string]int{}
 
 switch v := i.(type) {
 case int:

exercises/concept/sorting-room/.meta/exemplar.go

@@ -52,7 +52,7 @@ func DescribeFancyNumberBox(fnb FancyNumberBox) string {
 }
 
 // DescribeAnything should return a string describing whatever it contains.
-func DescribeAnything(i interface{}) string {
+func DescribeAnything(i any) string {
 	switch v := i.(type) {
 	case int:
 		return DescribeNumber(float64(v))

exercises/concept/sorting-room/sorting_room.go

@@ -38,6 +38,6 @@ func DescribeFancyNumberBox(fnb FancyNumberBox) string {
 }
 
 // DescribeAnything should return a string describing whatever it contains.
-func DescribeAnything(i interface{}) string {
+func DescribeAnything(i any) string {
 	panic("Please implement DescribeAnything")
 }

exercises/concept/sorting-room/sorting_room_test.go

@@ -155,7 +155,7 @@ func TestDescribeFancyNumberBox(t *testing.T) {
 func TestDescribeAnything(t *testing.T) {
 	tests := []struct {
 		description string
-		input       interface{}
+		input       any
 		want        string
 	}{
 		{

exercises/practice/acronym/.meta/gen.go

@@ -11,7 +11,7 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	j := map[string]interface{}{
+	j := map[string]any{
 		"abbreviate": &[]testCase{},
 	}
 	if err := gen.Gen("acronym", j, t); err != nil {

exercises/practice/all-your-base/.meta/gen.go

@@ -11,7 +11,7 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	j := map[string]interface{}{
+	j := map[string]any{
 		"rebase": &[]testCase{},
 	}
 	if err := gen.Gen("all-your-base", j, t); err != nil {
@@ -26,11 +26,11 @@ type testCase struct {
 		Digits     []int `json:"digits"`
 		OutputBase int   `json:"outputBase"`
 	} `json:"input"`
-	Expected interface{} `json:"expected"`
+	Expected any `json:"expected"`
 }
 
 func (o testCase) Result() []int {
-	s, ok := o.Expected.([]interface{})
+	s, ok := o.Expected.([]any)
 	if !ok {
 		return nil
 	}
@@ -43,7 +43,7 @@ func (o testCase) Result() []int {
 }
 
 func (o testCase) Err() string {
-	m, ok := o.Expected.(map[string]interface{})
+	m, ok := o.Expected.(map[string]any)
 	if !ok {
 		return ""
 	}

exercises/practice/allergies/.meta/gen.go

@@ -11,7 +11,7 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	j := map[string]interface{}{
+	j := map[string]any{
 		"allergicTo": &[]allergicToCase{},
 		"list":       &[]listCase{},
 	}

exercises/practice/alphametics/.meta/gen.go

@@ -13,7 +13,7 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-	j := map[string]interface{}{
+	j := map[string]any{
 		"solve": &[]testCase{},
 	}
 	if err := gen.Gen("alphametics", j, t); err != nil {