ios - 如何修复 C 风格的语句？

Question

对于下面发布的代码，修复 C 样式 for 语句 的正确方法是什么？

目前我正在交战:

C-style for statement is deprecated and will be removed in a future version of Swift

var ifaddr : UnsafeMutablePointer<ifaddrs> = nil
if getifaddrs(&ifaddr) == 0 {
    // Warning
    for (var ptr = ifaddr; ptr != nil; ptr = ptr.memory.ifa_next) {
        // Do some stuff...
    }
}

Answer 1

您可以将 for 循环转换为 while 循环:

var ptr = ifaddr
while ptr != nil {
    // Do stuff
    ptr = ptr.memory.ifa_next
}