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Update a spelling inconsistency

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L26: "zero cost" -> "zero-cost"
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Tang Chenglong 2016-03-08 13:42:05 +08:00
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src/doc/book/references-and-borrowing.md
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@ -23,7 +23,7 @@ Before we get to the details, two important notes about the ownership system.
Rust has a focus on safety and speed. It accomplishes these goals through many
‘zero-cost abstractions’, which means that in Rust, abstractions cost as little
as possible in order to make them work. The ownership system is a prime example
of a zero cost abstraction. All of the analysis we’ll talk about in this guide
of a zero-cost abstraction. All of the analysis we’ll talk about in this guide
is _done at compile time_. You do not pay any run-time cost for any of these
features.