diff --git a/functions/function4.exs b/functions/function4.exs
new file mode 100644
index 0000000..5854c33
--- /dev/null
+++ b/functions/function4.exs
@@ -0,0 +1,6 @@
+prefix = fn prefix -> fn str -> "#{prefix} #{str}" end end
+
+mrs = prefix.("Mrs")
+mrs.("Smith")                # => "Mrs Smith"
+
+prefix.("Elixir").("Rocks")  # => "Elixir Rocks"