Problem Statement

Create a directory and any missing parents. This task is named after the posix mkdir -p command, and several libraries which implement the same behavior. Please implement a function of a single path string (for example ./path/to/dir) which has the above side-effect. If the directory already exists, return successfully. Ideally implementations will work equally well cross-platform (on windows, linux, and OS X). It's likely that your language implements such a function as part of its standard library. If so, please also show how such a function would be implemented.

Let's start with the solution:

use std::fs;

fn main() {
    fs::create_dir_all("./path/to/dir").expect("An Error Occured!")
}