swift - “inout String”无法转换为 'UnsafePointer<String>'

Question

我正在使用一个需要 UnsafePointer<String> 的函数.

如何获得UnsafePointer<String>来自字符串？

尝试&someString给我错误:

'inout String' is not convertible to 'UnsafePointer<String>'

Answer 1

&someString创建 CMutablePointer<String> .

将其转换为UnsafePointer ，最简单的解决方案是调用特殊函数:

withUnsafePointer(&someString) { unsafePointer in
    //do something with the unsafePointer
}