Update README.md

README.md

@@ -111,6 +111,7 @@ Supported helpers for slices:
 - [CountValuesBy](#countvaluesby)
 - [Subset](#subset)
 - [Slice](#slice)
+- [Concat](#concat)
 - [Replace](#replace)
 - [ReplaceAll](#replaceall)
 - [Compact](#compact)
@@ -848,6 +849,21 @@ slice := lo.Slice(in, 4, 3)
 
 [[play](https://go.dev/play/p/8XWYhfMMA1h)]
 
+### Concat
+
+Returns a new slice containing all the elements in collections. Concat conserves the order of the elements.
+
+```go
+slice := lo.Concat([]int{1, 2}, []int{3, 4})
+// []int{1, 2, 3, 4}
+
+slice := lo.Concat(nil, []int{1, 2}, nil, []int{3, 4}, nil)
+// []int{1, 2, 3, 4}
+
+slice := lo.Concat[int]()
+// []int{}
+```
+
 ### Replace
 
 Returns a copy of the slice with the first n non-overlapping instances of old replaced by new.