Naming convention for Private Properties

Question

I've seen underscore used as a prefix for private properties

private var _aPrivateVar: String = "I am private"

I've seen them not used

private var aPrivateVar: String = "I am private"

Syntactically, it makes no difference and my preference is to not use them. However, what's the accepted convention in Swift so that I pick the right habit up?

Answer 1

在此Swift Guide style中，您可以找到类似的参考：

private var centerString: String {
  return "(\(x),\(y))"
}

在The swift Programming Language book (swift 4 beta)（链接到）中，您还可以找到以下示例：

第812页：

private var privateInstance = somePrivateClass()

第822页：

private var privateVariable = 12

摘自：Apple Inc.“Swift编程语言（Swift 4 beta）。”iBooks。

我确实认为第二种选择是正确的方法。