Update checked.rs

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LEXUGE 2018-04-05 19:06:18 +08:00 committed by GitHub
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@ -1,4 +1,4 @@
use core::ops::{Add, Sub, Mul, Div, Shl, Shr};
use core::ops::{Add, Sub, Mul, Div, Rem, Shl, Shr};
/// Performs addition that returns `None` instead of wrapping around on
/// overflow.