mora questions

• Can namerefs (declare -n) be used with arrays in bash? What does the documentation mean when it says declare -n cannot be applied to arrays?
• How can I let compiler to deduce a type of nullptr?
• Does c++ guarantee down-casting grandmother base class to grand child class like curiously recurring template pattern?
• member function pointer in constructor
• Why cannot I define an empty function in shell?
• How to use printf "%q " in bash?
• What is /snap/bin directory in $PATH? Can I remove it from $PATH?

mora answers