Wang-Zhao-Liu Q questions

• Writing init function for C struct
• How to create a Python 2.7 virtual environment using Python 3.7
• Running Java on Linux with Error: Could not find or load main class
• How to delete multiple rows in a PostgreSQL database based on string id?
• Saving Java objects into files
• Java object reference mechanisms
• How to read a .bmp file identify which pixels are black in Java
• Python Method Definition Using Decorators
• How to copy a char pointer into a char array? [duplicate]
• Can't stage folder for commit with git add . or git add -u

Wang-Zhao-Liu Q answers