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Update ch04-01-what-is-ownership.md #776

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Update ch04-01-what-is-ownership.md #776

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2 changes: 1 addition & 1 deletion src/ch04-01-what-is-ownership.md
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Expand Up @@ -66,7 +66,7 @@ let s = "hello";

我们会专注于 `String` 与所有权相关的部分。这些方面也同样适用于标准库提供的或你自己创建的其他复杂数据类型。在[第八章][ch8]会更深入地讲解 `String`。

我们已经见过字符串字面值，即被硬编码进程序里的字符串值。字符串字面值是很方便的，不过它们并不适合使用文本的每一种场景。原因之一就是它们是不可变的。另一个原因是并非所有字符串的值都能在编写代码时就知道：例如，要是想获取用户输入并存储该怎么办呢？为此，Rust 有第二个字符串类型，`String`。这个类型管理被分配到堆上的数据，所以能够存储在编译时未知大小的文本。可以使用 `from` 函数基于字符串字面值来创建 `String`，如下：
我们已经见过字符串字面值，即被硬编码进程序里的字符串值。字符串字面值是很方便的，不过它们并不适合使用文本的每一种场景。原因之一就是它们是不可变的。另一个原因是并非所有字符串的值都能在编写代码时就知道：例如，要是想获取用户输入并存储该怎么办呢？为此，Rust 有另一种字符串类型，`String`。这个类型管理被分配到堆上的数据，所以能够存储在编译时未知大小的文本。可以使用 `from` 函数基于字符串字面值来创建 `String`，如下：

```rust
let s = String::from("hello");
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