John

John has asked 10 questions and find answers to 12 problems.

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John questions

In practice, when `std::unordered_map` must be used instead of `std::map`?
Is it possible to run each testcase in a separate process?
Why does shared_ptr<int> p; p=nullptr; compile?
Why is template<classTp> bool is_array<Tp[]> a partial specialization for template<class T> bool is_array<Tp>?
Why does "weak.lock()" return "nullptr" with the definition of "auto weak=std::make_shared<int>(42);"?
What actually is done when `string::c_str()` is invoked?
What is difference between "owned pointer" and the "stored pointer" for std::shared_ptr?

John answers

How does one represent multiple threads in a flow chart