O'Neil questions

O'Neil answers

• Is there an established alternative to cout in C++ that behaves similarly to qDebug? [duplicate]
• Deducing template member function in class template
• How to invoke an overloaded parent cout friend class from a derived class?
• How to initialize an std::array<T, 2> where T is non-copyable and non-default-constructible?
• Pass parameters to std::thread wrapper
• Make std's data-structure use my existing non-static hash function "hashCode()" by default
• if statement is not working and is skipped to else part
• Multiple parameter packs in a single function?
• What is the difference between class a() and class a = class() in C++?
• use std::bind in lambda with std::unique_ptr