## io.getfileext
### 接口说明
>获取一个文件的扩展名
>
+++
put:io.getfileext
var:filepath=文件路径#
<<<
success
txt
+++
### 代码演示
~~~
var ext = io.getfileext("d:/a.txt");
println(ext);
~~~
- 引言
- 目录
- Get Started
- libcurl编译-windows-x64-opensll-zlib
- 基础语法
- if&else
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