freeCodeCamp/guide/chinese/elixir/strings/index.md

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---
title: Strings
localeTitle: 字符串
---
## 字符串
Elixir中的字符串用双引号括起来而字符列表是单引号。它们是UTF-8编码的二进制文件。
```elixir
iex> "Hello world!"
"Hello world!"
```
字符串插值可以在Elixir中使用octothorp然后是花括号。
```elixir
iex> variable = "world!"
"world!"
iex> "Hello #{variable}"
"Hello world!"
```
String模块包含许多基于Unicode标准的有用内置函数。
```elixir
iex> example = "string"
"string"
iex> String.capitalize(example)
"String"
iex> String.duplicate(example, 2)
"stringstring"
```
#### 更多信息:
* [elixir-lang.org |递归](https://elixir-lang.org/getting-started/basic-types.html#strings)
* [hexdocs |枚举](https://hexdocs.pm/elixir/String.html)