Swift 其他

数据类型

基础数据类型

OC封装类型

Swift中Array使用Contains的正确姿势

序列化 & 反序列化

序列化（json转JSONString）

let wordList = ["11", "22"]
// array 转 json
let data = try? JSONSerialization.data(withJSONObject: wordList)
// json 转 jsonString
let jsonString = String(data: data, encoding: .utf8)
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public extension Encodable {
    func toJSONString() -> String {
        let encoder = JSONEncoder()
        encoder.outputFormatting = .prettyPrinted
        guard let data = try? encoder.encode(self) else { return "" }
        guard let jsonStr = String(data: data, encoding: .utf8) else { return "" }
        return jsonStr
    }
}

struct TestModel: Codable {
    var name: String = ""
    var age: Int = 0
}

let testModel = TestModel(name: "name1", age: 10)
// 输出“{\"name\":\"name1\",\"age\":10}"
debugPrint(testModel.toJSONString()) 
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反序列化（json转model）

func jsonToModel<T>(type: T.Type, json: Any) -> T? where T:Codable {
    guard let jsonData = try? JSONSerialization.data(withJSONObject: json) else {
        return nil
    }
    guard let model = try? JSONDecoder.init().decode(type, from: jsonData) else {
        return nil
    }
    return model
}
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