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                Rust有一系列被認為是“原生”的類型。這意味著它們是內建在語言中的。Rust被構建為在標準庫中也提供了一些建立在這些類型之上的有用的類型,不過它們也是原生的。 ## 布爾型 Rust有一個內建的布爾類型,叫做`bool`。它有兩個值,`true`和`false`: ~~~ let x = true; let y: bool = false; ~~~ 布爾型通常用在[if語句](http://doc.rust-lang.org/nightly/book/if.html)中。 你可以在[標準庫文檔](http://doc.rust-lang.org/nightly/std/primitive.bool.html)中找到更多關于`bool`的文檔。 ## `char` `char`類型代表一個單獨的Unicode字符的值。你可以用單引號(`'`)創建`char`: ~~~ let x = 'x'; let two_hearts = '
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