小编典典

快速打印可变内存地址

swift

无论如何，是否可以[NSString stringWithFormat:@"%p", myVar]使用新的Swift语言从Objective-C 模拟？

例如：

let str = "A String"
println(" str value \(str) has address: ?")

阅读 268

2020-07-07

共1个答案

小编典典

现在，它已成为标准库的一部分：unsafeAddressOf。

/// Return an UnsafePointer to the storage used for `object`.  There's
/// not much you can do with this other than use it to identify the
/// object

对于Swift 3，请使用withUnsafePointer：

var str = "A String"
withUnsafePointer(to: &str) {
    print(" str value \(str) has address: \($0)")
}

2020-07-07