add a cpp snippet to make a lambda with a switch

snippets/cpp.snippets

@@ -6,3 +6,9 @@ snippet O0 Pragma to disable optimizations
 
 snippet assertm Assert with a message
 	assert(${condition} && "${message}");
+
+snippet lambdaSwitch lambda with a switch
+  [&](){switch(${switch_on}) {
+    case ${case}:
+      return ${return}
+  }}()