merge master into colorfade and improved it

overlapping colors look weird though

1 files changed, 20 insertions, 0 deletions

@@ -0,0 +1,20 @@
+#ifndef UTIL_H_E9110D4C
+#define UTIL_H_E9110D4C
+
+template <typename Container, typename Predicate>
+void erase_if(Container& items, const Predicate& predicate)
+{
+  for (auto it = std::begin(items); it != std::end(items);)
+  {
+    if (predicate(*it))
+    {
+      it = items.erase(it);
+    }
+    else
+    {
+      ++it;
+    }
+  }
+};
+
+#endif /* end of include guard: UTIL_H_E9110D4C */