nilpntr / fateful.rs

Fateful

A tool to fatefully exit the process without panics

Install

Add to your cargo.toml file

[dependencies]
fateful = "0.1.1"

Usage

use std::env;
use rand;
use fateful::{fatal, err_prefix};

fn main() {
    let args: Vec<String> = env::args().collect();
    if args.len() < 3 {
        fatal!(err_prefix!(), "missing random items to choose of");
    }

    let random_items: &Vec<String> = &args[1..args.len()].to_vec();

    let index = (rand::random::<f32>() * random_items.len() as f32).floor() as usize;
    println!("U need to study: {} 🎉", random_items[index]);
}

If u don't provide at least 2 arguments after cargo run the output will be:

Error: missing random items to choose of