Add find_index_of_all

snippets/find_index.md

@@ -1,6 +1,6 @@
 ---
 title: find_index
-tags: list,beginner
+tags: list,intermediate
 ---
 
 Returns the index of the first element in the provided list that satisfies the provided testing function.

snippets/find_index_of_all.md

@@ -0,0 +1,17 @@
+---
+title: find_index_of_all
+tags: list,intermediate
+---
+
+Returns the indexes of all elements in the provided list that satisfy the provided testing function.
+
+- Use `enumerate()` and a list comprehension to return the indexes of the all element in `lst` for which `fn` returns `True`.
+
+```py
+def find_index_of_all(lst, fn):
+  return [i for i, x in enumerate(lst) if fn(x)]
+```
+
+```py
+find_index_of_all([1, 2, 3, 4], lambda n: n % 2 == 1) # [0, 2]
+```

snippets/index_of_all.md

@@ -3,7 +3,7 @@ title: index_of_all
 tags: list,intermediate
 ---
 
-Returns a list of indices of all the occurrences of an element in a list.
+Returns a list of indexes of all the occurrences of an element in a list.
 
 - Use `enumerate()` and a list comprehension to check each element for equality with `value` and adding `i` to the result.