16 lines
501 B
16 lines
501 B
use core::fmt::Debug;
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/// Get values by 2 diff keys at the same time
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pub trait GetMut2<Idx: Debug + Eq> {
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type Output;
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fn get_mut(&mut self, id: Idx) -> &mut Self::Output;
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fn get_mut2(&mut self, id1: Idx, id2: Idx) -> (&mut Self::Output, &mut Self::Output) {
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assert_ne!(id1, id2);
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let self1 = self as *mut Self;
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let self2 = self1;
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let p1 = unsafe { &mut *self1 }.get_mut(id1);
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let p2 = unsafe { &mut *self2 }.get_mut(id2);
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(p1, p2)
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}
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}
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