When using collection types, we sometimes do not want to use loops to display each value. For example, in Rust, we can display the content of an Array, Tuple, HashMap (Map), or Vector without loops using the Debug trait. Rust
Rust Display Struct Content Using Directive Or Traits
In Rust, we can display the contents of a struct type without explicitly printing out all the fields it has.
Rust dev-dependencies and dependencies
In any codebase, some codes are not for the end-users. Meaning, they do not become part of the final application – be it for QA or production environment. They are codes for testing (e.g., unit tests) and building the app