diff --git a/src/utils/algorithms.py b/src/utils/algorithms.py
new file mode 100644
index 000000000..02e6205ee
--- /dev/null
+++ b/src/utils/algorithms.py
@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+from typing import Any, Callable
+
+
+def recursive_apply(function: Callable, data: Any) -> Any:
+    if isinstance(data, dict):  # FIXME: hashable?
+        return {key: recursive_apply(value, function) for key, value in data.items()}
+
+    if isinstance(data, list):  # FIXME: iterable?
+        return [recursive_apply(value, function) for value in data]
+
+    return function(data)