ios - 如何在 Swift 中从 ConstUnsafePointer 创建 CStirng

Question

我知道 CString 可以用 UnsafePointer 初始化，但是如何用 ConstUnsafePointer 来创建它

代码错误:ConstUnsafePointer is not convertible to UnsafePointer

     var result:ConstUnsafePointer = sqlite3_column_text(stmt, num)
     let cstr:CString = CString(result)

或者如何将其转换为 UnsafePointer

Answer 1

你只需要通过UnsafePointer:

var result: ConstUnsafePointer<UInt8> = sqlite3_column_text(stmt, num)
let cstr: CString = CString(UnsafePointer<UInt8>(result))