弃用具有多个参数的重命名方法

Question

我想为 Swift 3 更新以下方法的命名：

public func imageWithUrl(url: String, placeholderNamed: String) {
    if let image = UIImage(named: placeholderNamed) {
        imageWithUrl(url: url, placeholder: image)
    } else {
        imageWithUrl(url: url)
    }
}

到

public func image(url: String, placeholderNamed: String) {

所以我弃用了旧方法：

@available(*, deprecated: 1.8, renamed: "image(url:, placeholder:")

问题是我收到以下错误：

'renamed' argument of 'available' attribute must be an operator, identifier, or full function name, optionally prexied by a type name

Answer 1

我在 renamed: 部分遇到了问题。为了解决这个问题，只需将其更改为

@available(*, deprecated: 1.8, renamed: "image(url:placeholder:)")

弃用具有多个参数的重命名方法

Deprecating renamed method with multiple arguments

deprecated

ios

swift

swift3