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#![no_std]

use core::mem;

pub trait FlagExt {
    fn set(&mut self) -> bool;
    fn check(&mut self) -> bool;
}

impl FlagExt for bool {
    #[inline]
    fn set(&mut self) -> bool { mem::replace(self, true) }

    #[inline]
    fn check(&mut self) -> bool { mem::replace(self, false) }
}