detail rust error handle

Tiny macro for calling functions with generic Option<T> arguments

Engineer is a master builder based on Optional.

Macros for zipping fallible operations together

Traits and auto-implementations to improve arithmetic operations usability when dealing with `Option`s.

Add inspect method to Option and Result types.

The macro to creates option structure so easily.

Vec<Option<T>>-like container

🔧 Rust cli tool which selectable prompt based on user interaction.

Probably a better Option.