tour:: slide_backup with 1 parameter

2021-03-31 15:23:40 +02:00 · 2021-03-31 15:23:40 +02:00 · 21f151cadb
parent 22c3bf8821
commit 21f151cadb
1 changed files with 2 additions and 0 deletions
--- a/tour.cpp
+++ b/tour.cpp
@ -81,6 +81,8 @@ template<class T, class U> void slide_backup(T& what, U value) {
  restorers.push_back([&what, backup] { what = backup; });
  what = value;
  }
+
+template<class T> void slide_backup(T& what) { slide_backup(what, what); }
 #endif

 EX void on_restore(const reaction_t& t) {