Update.

.emacs.d/snippets/c++-mode/accl~

@@ -1,7 +0,0 @@
-# -*- mode: snippet -*-
-# name: accumulate_lambda
-# key: accl
-# --
-std::accumulate(${1:v}.begin(), $1.end(), ${2:0}, [${3:}] (${4:auto} const& ${5:r}, ${6:auto} const& ${7:v}) {
-        $0
-    });