Using .join(..) with empty string RS-W1203
Anti-pattern
Minor
Using slice::join with an empty string literal is equivalent to slice::concat.
The latter is more readable and generally more performant.
Consider using .concat() over .join("").
Bad practice
println!("{}", ["hell", "ope"].join(""));
// "hellope"
Recommended
println!("{}", ["hell", "ope"].concat());
// "hellope"