feat: add hints for extreme concatenate (#116)

dennis-rall · web-flow · commit d3163d6e35d9 · 2024-02-02T16:14:20.000+08:00
diff --git a/challenges/extreme-concatenate/hints.md b/challenges/extreme-concatenate/hints.md
@@ -0,0 +1,2 @@
+- Check out [Concatenate](https://docs.python.org/3/library/typing.html#typing.Concatenate)
+- Omit the return type if you struggle with it

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+- Check out [Concatenate](https://docs.python.org/3/library/typing.html#typing.Concatenate)`
	`2`	`+- Omit the return type if you struggle with it`