BlackBeans questions

BlackBeans answers

• Useful monads for multi-paradigm languages
• Why is this borrow considered to be "used later" even though it clearly isn't?
• Why does &str::from(...) not create a String?
• How to create and drop a shared resource for tests?
• rust struct fields generating by macro
• Random function does not return random values
• Is there any way to mitigate a 'borrow may still be in use when generator yields' error in nested generators by using lifetimes?
• How to loop over 0 .. v.len() - 1 when v might be empty?
• How to remove duplicate in an array in Rust?
• ImportError: attempted relative import with no known parent package :(