Question

我正在研究Swift 4。

要求：我有一个字符串：

var inputString = "Today is very bright day"

我有一个包含字符串键值对的文件。

{
    "Birthday": ["brand day", "burn day", "bright day", "brick daya"],
    "Temporary": ["tempora", "temporar", "tempura"]
}

需要的数学：在应用程序中，如果inputString是"Today is very bright day"，我需要检查此字符串是否包含键值对文件中的任何值，并将该事件替换为键。

例如：在上面的示例中：inputString = "Today is very bright day" 将它与文件匹配。用生日代替生日，以便inout字符串变为 inputString = "Today is very birthday"。

有没有办法做到这一点？键值文件可能很大。

Answer 1

你可以使用强力解决方案，它将是2 for循环，我正在努力增强它

var size = 500;
var Xpos = Math.floor(Math.random() * size);
var Ypos = Math.floor(Math.random() * size);
var dist = Math.hypot(Xpos - size / 2, Ypos - size / 2);

Answer 2

我认为无论如何都必须遍历每个键值配对的每个列表，但这是替换子串的基本方法。

import Foundation

let replacer = "Birthday"
let replacees = ["brand day", "burn day", "bright day", "brick daya"]

var inputString = "Today is very bright day"

for phrase in replacees {
    inputString = inputString.replacingOccurrences(of: phrase, with: replacer)
}

print(inputString) //should print "Today is very birthday"

Answer 3

无论如何我都无法实现你想要的东西，而无需迭代你的键值列表，但这是一个解决方案。我不确定它是否有效，但你可以尝试一下。

        if let path = Bundle.main.path(forResource: "fileName", ofType: "json") {
            do {
                let data = try Data(contentsOf: URL(fileURLWithPath: path), options: .mappedIfSafe)
                let jsonResult = try JSONSerialization.jsonObject(with: data, options: .allowFragments)

                if let keyValueArray = jsonResult as? [String: [String]]{
                    var inputString = "Today is very bright day"

                    for (key, value) in keyValueArray {
                        let regex = "\\b" + value.joined(separator: "|\\b")

                        inputString = inputString.replacingOccurrences(of: regex, with: key, options: .regularExpression, range: nil)
                    }

                    print(inputString)
                }
            } catch {
                return
            }
        }

将子字符串与Swift中的另一个子字符串匹配

3 个答案: