Use raw pointers for .swap(i, j) #903
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This fixes a minor issue where we want to avoid overlapping &mut from the same array.
jturner314
reviewed
Jan 30, 2021
| let ptr = self.as_mut_ptr(); | ||
| let offset1 = index1.index_checked(&self.dim, &self.strides); | ||
| let offset2 = index2.index_checked(&self.dim, &self.strides); | ||
| if let Some(offset1) = offset1 { |
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Fwiw, as of Rust 1.46, things like this can be written a little more nicely using Option::zip:
if let Some((offset1, offset2)) = offset1.zip(offset2) {
unsafe { ... }
} else {
panic!(...);
}(or if let Some((offset1, offset2)) = Option::zip(offset1, offset2) if that looks better)
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if let (Some(_), Some(_)) = (offset1, offset2) also works IMO. Now which option gives better code :) I wouldn't bother to investigate though.
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This fixes a minor issue where we want to avoid overlapping &mut from
the same array.
Closes #796