Tim Roberts questions

Tim Roberts answers

• Can't run Gimp batch commands from a Mac / OSX
• How do I create a list of dictionaries with same keys?
• Iterate over pairs in order of sum of absolute values
• Granting friendship to constructor/destructor of template class specialization - works under C++17, but fails under C++20
• How can I read a string column as a list in MySQL?
• Hiding the turtle in python turtle drawing