diff --git a/arrutil/any.go b/arrutil/any.go
deleted file mode 100644
index 3513daa7e..000000000
--- a/arrutil/any.go
+++ /dev/null
@@ -1,6 +0,0 @@
-package arrutil
-
-// alias of interface{}
-//
-// TIP: cannot add `go:build !go1.18` in file head, that require the go.mod set `go 1.18`
-type any = interface{}
diff --git a/arrutil/arrutil.go b/arrutil/arrutil.go
index 653b87f05..6f2f1bb5a 100644
--- a/arrutil/arrutil.go
+++ b/arrutil/arrutil.go
@@ -2,9 +2,9 @@
 package arrutil
 
 import (
-	"reflect"
 	"strings"
 
+	"github.com/gookit/goutil/comdef"
 	"github.com/gookit/goutil/mathutil"
 )
 
@@ -92,29 +92,27 @@ func TrimStrings(ss []string, cutSet ...string) []string {
 }
 
 // GetRandomOne get random element from an array/slice
-func GetRandomOne(arr any) interface{} { return RandomOne(arr) }
+func GetRandomOne[T any](arr []T) T { return RandomOne(arr) }
 
 // RandomOne get random element from an array/slice
-func RandomOne(arr any) interface{} {
-	rv := reflect.ValueOf(arr)
-	if rv.Kind() != reflect.Slice && rv.Kind() != reflect.Array {
-		return arr
+func RandomOne[T any](arr []T) T {
+	if ln := len(arr); ln > 0 {
+		i := mathutil.RandomInt(0, len(arr))
+		return arr[i]
 	}
-
-	i := mathutil.RandomInt(0, rv.Len())
-	r := rv.Index(i).Interface()
-	return r
+	panic("cannot get value from nil or empty slice")
 }
 
-// Unique value in the given array, slice.
-func Unique(arr any) interface{} {
-	rv := reflect.ValueOf(arr)
-	if rv.Kind() != reflect.Slice && rv.Kind() != reflect.Array {
-		return arr
-	}
+// Unique value in the given slice data.
+func Unique[T ~string | comdef.XintOrFloat](arr []T) []T {
+	valMap := make(map[T]struct{}, len(arr))
+	uniArr := make([]T, 0, len(arr))
 
-	for i := 0; i < rv.Len(); i++ {
-		// TODO ...
+	for _, t := range arr {
+		if _, ok := valMap[t]; !ok {
+			valMap[t] = struct{}{}
+			uniArr = append(uniArr, t)
+		}
 	}
-	return arr
+	return uniArr
 }
diff --git a/arrutil/arrutil_test.go b/arrutil/arrutil_test.go
index 8122eea66..fbf1103d5 100644
--- a/arrutil/arrutil_test.go
+++ b/arrutil/arrutil_test.go
@@ -60,7 +60,7 @@ func TestGetRandomOne(t *testing.T) {
 	assert.NotEq(t, intVal, intVal1)
 
 	// int array
-	intArray := [6]int{1, 2, 3, 4, 5, 6}
+	intArray := []int{1, 2, 3, 4, 5, 6}
 	intReturned := arrutil.GetRandomOne(intArray)
 	intReturned1 := arrutil.GetRandomOne(intArray)
 	for intReturned == intReturned1 {
@@ -80,19 +80,20 @@ func TestGetRandomOne(t *testing.T) {
 		strVal1 = arrutil.GetRandomOne(strSlice)
 	}
 
-	assert.IsType(t, string(""), strVal)
+	assert.IsType(t, "", strVal)
 	is.True(arrutil.Contains(strSlice, strVal))
-	assert.IsType(t, string(""), strVal1)
+	assert.IsType(t, "", strVal1)
 	is.True(arrutil.Contains(strSlice, strVal1))
 	assert.NotEq(t, strVal, strVal1)
 
 	// string array
-	strArray := [4]string{"aa", "bb", "cc", "dd"}
+	strArray := []string{"aa", "bb", "cc", "dd"}
 	strReturned := arrutil.GetRandomOne(strArray)
 	strReturned1 := arrutil.GetRandomOne(strArray)
 	for strReturned == strReturned1 {
 		strReturned1 = arrutil.GetRandomOne(strArray)
 	}
+
 	assert.IsType(t, "", strReturned)
 	is.True(arrutil.Contains(strArray, strReturned))
 	assert.IsType(t, "", strReturned1)
@@ -106,19 +107,20 @@ func TestGetRandomOne(t *testing.T) {
 	for byteVal == byteVal1 {
 		byteVal1 = arrutil.GetRandomOne(byteSlice)
 	}
+
 	assert.IsType(t, byte('a'), byteVal)
 	is.True(arrutil.Contains(byteSlice, byteVal))
 	assert.IsType(t, byte('a'), byteVal1)
 	is.True(arrutil.Contains(byteSlice, byteVal1))
 	assert.NotEq(t, byteVal, byteVal1)
 
-	// int
-	invalidIntData := int(404)
-	invalidIntReturned := arrutil.GetRandomOne(invalidIntData)
-	assert.IsType(t, int(0), invalidIntReturned)
+	is.Panics(func() {
+		arrutil.RandomOne([]int{})
+	})
+}
 
-	// float
-	invalidDataFloat := float32(3.14)
-	invalidFloatReturned := arrutil.GetRandomOne(invalidDataFloat)
-	assert.IsType(t, float32(3.1), invalidFloatReturned)
+func TestUnique(t *testing.T) {
+	assert.Eq(t, []int{2, 3, 4}, arrutil.Unique[int]([]int{2, 3, 2, 4}))
+	assert.Eq(t, []uint{2, 3, 4}, arrutil.Unique([]uint{2, 3, 2, 4}))
+	assert.Eq(t, []string{"ab", "bc", "cd"}, arrutil.Unique([]string{"ab", "bc", "ab", "cd"}))
 }
diff --git a/arrutil/collection_gte118_test.go b/arrutil/collection_gte118_test.go
deleted file mode 100644
index 4df29d67d..000000000
--- a/arrutil/collection_gte118_test.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package arrutil_test
-
-import (
-	"testing"
-
-	"github.com/gookit/goutil/arrutil"
-	"github.com/gookit/goutil/testutil/assert"
-)
-
-func TestMap(t *testing.T) {
-	list1 := []map[string]any{
-		{"name": "tom", "age": 23},
-		{"name": "john", "age": 34},
-	}
-
-	flatArr := arrutil.Column(list1, func(obj map[string]any) (val any, find bool) {
-		return obj["age"], true
-	})
-
-	assert.NotEmpty(t, flatArr)
-	assert.Contains(t, flatArr, 23)
-	assert.Len(t, flatArr, 2)
-	assert.Eq(t, 34, flatArr[1])
-}
diff --git a/arrutil/collection_lt118.go b/arrutil/collection_lt118.go
deleted file mode 100644
index ee6f390c8..000000000
--- a/arrutil/collection_lt118.go
+++ /dev/null
@@ -1,9 +0,0 @@
-//go:build !go1.18
-// +build !go1.18
-
-package arrutil
-
-// Map an object list [object0{},object1{},...] to flatten list [object0.someKey, object1.someKey, ...]
-func Map(data any, mapFn func(v any) any) []any {
-	panic("please upgrade to go 1.18+")
-}
diff --git a/arrutil/collection_test.go b/arrutil/collection_test.go
index 1ce50550c..398f7bd7c 100644
--- a/arrutil/collection_test.go
+++ b/arrutil/collection_test.go
@@ -286,3 +286,19 @@ func TestExceptWhileEmptyReturnsEmpty(t *testing.T) {
 	assert.Eq(t, []string{}, result)
 	assert.NotSame(t, &data, &result, "should always returns new slice")
 }
+
+func TestMap(t *testing.T) {
+	list1 := []map[string]any{
+		{"name": "tom", "age": 23},
+		{"name": "john", "age": 34},
+	}
+
+	flatArr := arrutil.Column(list1, func(obj map[string]any) (val any, find bool) {
+		return obj["age"], true
+	})
+
+	assert.NotEmpty(t, flatArr)
+	assert.Contains(t, flatArr, 23)
+	assert.Len(t, flatArr, 2)
+	assert.Eq(t, 34, flatArr[1])
+}
diff --git a/comdef/types.go b/comdef/types.go
new file mode 100644
index 000000000..afea26f70
--- /dev/null
+++ b/comdef/types.go
@@ -0,0 +1,32 @@
+package comdef
+
+// Int interface type
+type Int interface {
+	~int | ~int8 | ~int16 | ~int32 | ~int64
+}
+
+// Uint interface type
+type Uint interface {
+	~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64
+}
+
+// Xint interface type. all int or uint types
+type Xint interface {
+	// equal: ~int | ~int8 | ~int16 | ~int32 | ~int64 | ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint32 | ~uint64
+	Int | Uint
+}
+
+// Float interface type
+type Float interface {
+	~float32 | ~float64
+}
+
+// IntOrFloat interface type. all int and float types
+type IntOrFloat interface {
+	Int | Float
+}
+
+// XintOrFloat interface type. all (x)int and float types
+type XintOrFloat interface {
+	Int | Uint | Float
+}
diff --git a/structs/any.go b/structs/any.go
deleted file mode 100644
index ba70a9675..000000000
--- a/structs/any.go
+++ /dev/null
@@ -1,6 +0,0 @@
-package structs
-
-// alias of interface{}
-//
-// TIP: cannot add `go:build !go1.18` in file head, that require the go.mod set `go 1.18`
-type any = interface{}
diff --git a/testutil/assert/any.go b/testutil/assert/any.go
deleted file mode 100644
index 5d2083e55..000000000
--- a/testutil/assert/any.go
+++ /dev/null
@@ -1,6 +0,0 @@
-package assert
-
-// alias of interface{}
-//
-// TIP: cannot add `go:build !go1.18` in file head, that require the go.mod set `go 1.18`
-type any = interface{}