HappenLee commented on a change in pull request #5706:
URL: https://github.com/apache/incubator-doris/pull/5706#discussion_r619948802
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File path: be/src/util/defer_op.h
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@@ -34,6 +34,24 @@ class DeferOp {
DeferFunction _func;
};
+// A Better Defer operator #5576
+// for C++17
+// Defer defer {[]{ call something }};
+//
+// for C++11
+// auto op = [] {};
+// Defer<decltype<op>> (op);
+template <class T>
+class Defer {
+public:
+ Defer(T& closure) : _closure(closure) {}
Review comment:
may only Defer(T&& closure) : _clousure(std::forward<T>(closure)) is
better
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