@ -12027,6 +12027,26 @@ Just doing this shows you all the information about your user session. It will s
So if you need this information, `Vars` is what you want.
The easiest way to get a single `Var` is by using the `env!` macro. You just put the name of the variable inside it, and it will give you a `&str`. It won't work if the variable is wrong though, so if you aren't sure then use `option_str!` instead. If we write this on the Playground:
So `option_str!` is always going to be the safer macro. `env!` is better if you actually want the program to crash when you can't find the environment variable.