is-dev (cargo): A simple macro to determine if an environment is a "development" environment.  Built because some of us (me) are lazy and don't feel like copy-pasting the same check for development environments over and over again.  :heart:  Ex: ``` #[macro_use] extern crate is_dev;  fn test_is_dev() {     let e: bool = is_dev!("ENV", "development");     assert!(e); } ``` 
Keywords: environment|development|helper