add note

Author: Sophomore42

_code/CppCon/2023/applicative_the_forgotten_c++_functional_pattern.md

@@ -0,0 +1,15 @@
+---
+title: Applicative: The Forgotten C++ Functional Pattern by Ben Deane
+date: 2024-10-31
+url: https://www.bilibili.com/video/BV1BC4y1R7iL?p=43
+---
+
+> I hope that by the end of the talk some of you will look at your code woth new eyes.
+
+## One
+
+Applicative: a programming Pattern that fits in functors and monads
+
+Functors: a parameterized type(a class templtae) of one(free) argument.
+
+fmap