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Update README.md

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Francis 2021-04-03 17:27:34 +08:00 committed by GitHub
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design_pattern/singleton/README.md
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@ -185,7 +185,7 @@ singleton *instance() {
lock_guard<mutex> guard(lock_);
if (p == nullptr) {
singleton *tmp = static_cast<singleton *>(operator new(sizeof(singleton)));
new(p)singleton();
new(tmp)singleton();
p = tmp;
}
}