auto merge of #16580 : steveklabnik/rust/gh1498, r=pcwalton
Fixes #14948
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ef5ad07272
@ -44,17 +44,6 @@ the string is valid for the `'static` lifetime, otherwise known as the
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lifetime of the entire program. As can be inferred from the type, these static
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strings are not mutable.
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# Mutability
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Many languages have immutable strings by default, and Rust has a particular
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flavor on this idea. As with the rest of Rust types, strings are immutable by
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default. If a string is declared as `mut`, however, it may be mutated. This
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works the same way as the rest of Rust's type system in the sense that if
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there's a mutable reference to a string, there may only be one mutable reference
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to that string. With these guarantees, strings can easily transition between
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being mutable/immutable with the same benefits of having mutable strings in
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other languages.
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# Representation
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Rust's string type, `str`, is a sequence of unicode scalar values encoded as a
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