1. add an item .idea in .gitignore

2. add nil check for funk.IsIteratee
3. add an unit test for 2

Author: DovahYol

.gitignore

@@ -22,3 +22,6 @@ _testmain.go
 *.exe
 *.test
 *.prof
+
+#GoLand
+.idea

helpers.go

@@ -129,6 +129,9 @@ func NotEqual(expected interface{}, actual interface{}) bool {
 // IsIteratee returns if the argument is an iteratee.
 func IsIteratee(in interface{}) bool {
 	arrType := reflect.TypeOf(in)
+	if arrType == nil {
+		return false
+	}
 
 	kind := arrType.Kind()
 

helpers_test.go

@@ -263,3 +263,9 @@ func TestAll(t *testing.T) {
 	is.False(All("", nil, false))
 	is.True(All("foo", true, 3))
 }
+
+func TestIsIteratee(t *testing.T) {
+	is := assert.New(t)
+
+	is.False(IsIteratee(nil))
+}