rollup merge of #24665: sw17ch/document-complete-slice-syntax
The documentation doesn't appear to describe the `&foo[..]` syntax. I tried looking in `primitive-types.html#slices` and `std/primitive.slice.html`. There's an example of partially slicing an array in trpl and a mention of `&foo[..]` in [the standard library documentation](https://doc.rust-lang.org/std/primitive.slice.html), but neither place, from what I can see, actually describes the behavior of `&foo[..]`. +r? @steveklabnik
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@ -168,6 +168,7 @@ like arrays:
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```rust
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let a = [0, 1, 2, 3, 4];
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let middle = &a[1..4]; // A slice of a: just the elements 1, 2, and 3
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let complete = &a[..]; // A slice containing all of the elements in a
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```
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Slices have type `&[T]`. We’ll talk about that `T` when we cover
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