数据与 [UInt8] [英] Data vs [UInt8]

问题描述

Swift 提供了 Data 和 [UInt8] 类型，它们的作用非常相似.

Swift offers both Data and [UInt8] types, which do a very similar thing.

• 两者有什么区别?
• 在设计新 API 时，首选的类型是什么?

推荐答案

[UInt8] 本质上是一个字节数组，一个字节(我相信你知道)，由 8 位组成.虽然 NSData 不仅仅是一个字节数组，但它的底层结构在深处是基于一个的.例如，您可以使用 data.bytes 等方法轻松地在它们之间进行转换.

[UInt8] is essentially a byte array, a byte (as I'm sure you know), is comprised of 8 bits. Whilst NSData isn't simply a byte array, deep down it's underlying structure is based off one. You can easily convert between them using methods such as data.bytes, for example.

在设计 API 方面，我个人建议您使用 NSData 设计它们，因为它通过简单的字节数组提供了所有额外的功能.Apple 已经为您完成了很多跑腿工作，为什么还要自己再做一次?

In terms of designing APIs, I would personally recommend you design them with NSData simply because of all the extra functionality it offers over a simple byte array. Apple has already done a lot of the legwork for you, so why do it again yourself?

这篇关于数据与 [UInt8]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！