c++ - 我们是否应该释放为 std::locale 分配的资源

Question

const std::locale fmt2(std::locale::classic(),
                       new boost::gregorian::date_input_facet("%m/%d/%Y"));

在第二个参数中，我们使用new boost::gregorian::date_input_facet("%m/%d/%Y")。

问题:我需要关注释放分配的资源吗？

谢谢

Answer 1

没有。需要实现来释放内存本身(除非您另外指定):

22.3.1.1.2 Class locale::facet

For refs == 0, the implementation performs delete static_cast<locale::facet*>(f) (where f is a pointer to the facet) when the last locale object containing the facet is destroyed; for refs == 1, the implementation never destroys the facet.