From 2c4fdb5416dd394ff5e61fcdb8eb4f09e46a2ed8 Mon Sep 17 00:00:00 2001
From: bep <bjorn.erik.pedersen@gmail.com>
Date: Tue, 24 Feb 2015 11:58:16 +0100
Subject: [PATCH] Add ToIntSlice

---
 cast.go      |  5 +++++
 cast_test.go |  7 +++++++
 caste.go     | 20 ++++++++++++++++++++
 3 files changed, 32 insertions(+)

diff --git a/cast.go b/cast.go
index fe382ca..1dde519 100644
--- a/cast.go
+++ b/cast.go
@@ -61,3 +61,8 @@ func ToStringSlice(i interface{}) []string {
 	v, _ := ToStringSliceE(i)
 	return v
 }
+
+func ToIntSlice(i interface{}) []int {
+	v, _ := ToIntSliceE(i)
+	return v
+}
diff --git a/cast_test.go b/cast_test.go
index c428ba5..b4c8382 100644
--- a/cast_test.go
+++ b/cast_test.go
@@ -77,6 +77,13 @@ func TestMaps(t *testing.T) {
 	assert.Equal(t, ToStringMapBool(stringMapBool), map[string]bool{"v1": true, "v2": false})
 }
 
+func TestSlices(t *testing.T) {
+	assert.Equal(t, []string{"a", "b"}, ToStringSlice([]string{"a", "b"}))
+	assert.Equal(t, []string{"1", "3"}, ToStringSlice([]interface{}{1, 3}))
+	assert.Equal(t, []int{1, 3}, ToIntSlice([]int{1, 3}))
+	assert.Equal(t, []int{1, 3}, ToIntSlice([]interface{}{1.2, 3.2}))
+}
+
 func TestToBool(t *testing.T) {
 	assert.Equal(t, ToBool(0), false)
 	assert.Equal(t, ToBool(nil), false)
diff --git a/caste.go b/caste.go
index 72c7690..db8b9fb 100644
--- a/caste.go
+++ b/caste.go
@@ -318,6 +318,26 @@ func ToStringSliceE(i interface{}) ([]string, error) {
 	return a, fmt.Errorf("Unable to Cast %#v to []string", i)
 }
 
+func ToIntSliceE(i interface{}) ([]int, error) {
+	jww.DEBUG.Println("ToIntSliceE called on type:", reflect.TypeOf(i))
+
+	var a []int
+
+	switch v := i.(type) {
+	case []interface{}:
+		for _, u := range v {
+			a = append(a, ToInt(u))
+		}
+		return a, nil
+	case []int:
+		return v, nil
+	default:
+		return a, fmt.Errorf("Unable to Cast %#v to []int", i)
+	}
+
+	return a, fmt.Errorf("Unable to Cast %#v to []int", i)
+}
+
 func StringToDate(s string) (time.Time, error) {
 	return parseDateWith(s, []string{
 		time.RFC3339,