feat: adding WithoutEmpty

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 @samber: I sometimes forget to update this file. Ping me on [Twitter](https://twitter.com/samuelberthe) or open an issue in case of error. We need to keep a clear changelog for easier lib upgrade.
 
+## 1.24.0 (2022-07-04)
+
+Adding:
+
+- lo.Without
+- lo.WithoutEmpty
+
 ## 1.23.0 (2022-07-04)
 
 Adding:

README.md

@@ -139,6 +139,7 @@ Supported intersection helpers:
 - Difference
 - Union
 - Without
+- WithoutEmpty
 
 Supported search helpers:
 
@@ -1101,6 +1102,15 @@ subset := lo.Without[int]([]int{0, 2, 10}, 0, 1, 2, 3, 4, 5)
 // []int{10}
 ```
 
+### WithoutEmpty
+
+Returns slice excluding empty values.
+
+```go
+subset := lo.WithoutEmpty[int]([]int{0, 2, 10})
+// []int{2, 10}
+```
+
 ### IndexOf
 
 Returns the index at which the first occurrence of a value is found in an array or return -1 if the value cannot be found.

intersect.go

@@ -186,3 +186,17 @@ func Without[T comparable](collection []T, exclude ...T) []T {
 	}
 	return result
 }
+
+// WithoutEmpty returns slice excluding empty values.
+func WithoutEmpty[T comparable](collection []T) []T {
+	var empty T
+
+	result := make([]T, 0, len(collection))
+	for _, e := range collection {
+		if e != empty {
+			result = append(result, e)
+		}
+	}
+
+	return result
+}

intersect_test.go

@@ -223,3 +223,13 @@ func TestWithout(t *testing.T) {
 	is.Equal(result4, []int{})
 	is.Equal(result5, []int{})
 }
+
+func TestWithoutEmpty(t *testing.T) {
+	is := assert.New(t)
+	result1 := WithoutEmpty([]int{0, 1, 2})
+	result2 := WithoutEmpty([]int{1, 2})
+	result3 := WithoutEmpty([]int{})
+	is.Equal(result1, []int{1, 2})
+	is.Equal(result2, []int{1, 2})
+	is.Equal(result3, []int{})
+}