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Update Ch19.1 on slice splitting #1999

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Oct 29, 2019
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Update Ch19.1 on slice splitting #1999

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2 changes: 1 addition & 1 deletion src/ch19-01-unsafe-rust.md
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Expand Up @@ -250,7 +250,7 @@ fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
This function first gets the total length of the slice. Then it asserts that
the index given as a parameter is within the slice by checking whether it’s
less than or equal to the length. The assertion means that if we pass an index
that is greater than the index to split the slice at, the function will panic
that is greater than the length to split the slice at, the function will panic
before it attempts to use that index.

Then we return two mutable slices in a tuple: one from the start of the
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