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auto merge of #14799 : mcreinhard/rust/tilde-fix, r=alexcrichton
Replaced `~Drawable` with `Box<Drawable>` in tutorial
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@ -2459,7 +2459,7 @@ fn draw_all(shapes: &[Box<Drawable>]) {
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}
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~~~~
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In this example, there is no type parameter. Instead, the `~Drawable`
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In this example, there is no type parameter. Instead, the `Box<Drawable>`
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type denotes any owned box value that implements the `Drawable` trait.
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To construct such a value, you use the `as` operator to cast a value
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to an object:
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