Question

我有一个可编码的协议和一个可编码的类：

public protocol SourceListItem: AnyObject, Codable
{
    var name: String { get set }
    var children: [SourceListItem] { get set }
}

final public class SourceListHeader: Codable
{
    var name: String = "Give me a name!"
    var children: [SourceListItem] = [SourceListItem]()
}

但是，编译器给了我两个错误：

Type 'SourceListHeader' does not conform to protocol 'Decodable'
Type 'SourceListHeader' does not conform to protocol 'Codable'

那是为什么？我无法解决该错误，并且尝试了许多变体...

问题似乎出在协议中，因为如果我删除它，一切都会很好。就像编译器未能看到该协议仅适用于Codable类一样。

Answer 1

您需要符合mh_terms = ['mental', 'ptsd', 'sud', 'substance abuse', 'drug abuse', 'alcohol', 'alcoholism', 'anxiety', 'depressing', 'bipolar', 'mh', 'smi', 'oud', 'opioid' ] singleabstract = 'This is a research abstract that includes words like mental health and anxiety. My hope is that I get my code to work and not resort to alcohol.' for mh in mh_terms: mh = mh.lower mh = str(mh) number_of_occurences = 0 for word in singleabstract.split(): if mh in word: number_of_occurences += 1 print(number_of_occurences)的具体类型，不能使用符合Codable的协议。

Codable

使类可编码

1 个答案: