From f4b08ddada8ff3865056138e900ebe966d870961 Mon Sep 17 00:00:00 2001
From: Aryadev Chavali <aryadev@aryadevchavali.com>
Date: Mon, 22 Nov 2021 05:53:07 +0000
Subject: (list)+map function

void return, just maps f onto every value in the linked list till
nullity.
---
 list.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/list.cpp b/list.cpp
index 83e7068..df8cc13 100644
--- a/list.cpp
+++ b/list.cpp
@@ -54,6 +54,15 @@ List<T> *reverse(List<T> *lst, List<T> *prev = nullptr)
   return reverse(next, lst);
 }
 
+template <typename T, typename U>
+void map(List<T> *lst, U (*f)(T))
+{
+  if (!lst)
+    return;
+  lst->value = f(lst->value);
+  map(lst->next, f);
+}
+
 template <typename T>
 std::ostream& operator<<(std::ostream& ostream, const List<T> *lst)
 {
-- 
cgit v1.2.3-13-gbd6f