BlackBeans questions

BlackBeans answers

• Why is the target/debug/deps directory so big in rust
• When can string slice `&str` produced by a function be returned in Rust?
• replace impl trait return type with trait bound
• How to ensure trait bounds within a trait?
• Why should/shoudn't I use lib.rs in binary crates? [closed]
• 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