The sum command for MacOS
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- use std::io::{self, BufRead};
-
- fn main() {
- let stdin = io::stdin();
- let sum: u32 = stdin
- .lock()
- .lines()
- .map(|line| -> u32 {
- let num: u32 = line.unwrap().parse().unwrap_or(0);
- num
- }).sum();
-
- println!("{}", sum);
- }
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