Question

我正在使用let components = UItextView.text.components(separatedBy: “\n”)函数来分隔段落。

Range<String.Index>(3..<8)

这将返回一个字符串数组。我需要能够获得范围的信息，并且还需要每个人都有一个“ id”才能识别它。我不知道该怎么做。我需要以某种方式使用令牌吗？

编辑：“ id”的含义仅是一个标识符，我必须能够识别出哪个段落与哪个组件相关。这是因为，如果在2个已经存在的段落之间添加一个段落，则通过数组进行计数将不准确。

对于范围，我想要一个单独段落的Swift Range。示例：glMemoryBarrier

Answer 1

比PGDev建议的功能更多的方法：

let str = """
Paragraph 1
Paragraph 2
Paragraph 3
Paragraph 4
"""

struct ParagraphModel: Hashable {
    let text: String
    let range: Range<String.Index>

    init(withText text: String, range: Range<String.Index>) {
        self.text = text
        self.range = range
    }

    func hash(into hasher: inout Hasher) {
        hasher.combine(text)
        hasher.combine(range.lowerBound)
        hasher.combine(range.upperBound)
    }
}

let components = str.components(separatedBy: "\n")
let models = components.compactMap { component -> ParagraphModel? in
    if let range = str.range(of: component) {
        return ParagraphModel(withText: component, range: range)
    }
    return nil
}

id将是模型的hashValue。

Answer 2

假设我们的文本如下：

let text = """
        This returns an array of strings. I am needing to be able to have the info for the ranges and also an ‘id’ for each one to be able to identify it. I have no idea how I would go about doing this. Do I need to make use of tokens somehow?
        EDIT: What I mean by 'id' is just an identifier I can have to be able to recognise what paragraph relates to which component. This is because counting through the array would not be accurate if a paragraph is added between 2 already existing paragraphs.
        """

从components中以text分隔的"\n"，

let arr = text.components(separatedBy: "\n")

现在，element-arr

中的每个String, Identifier, Range需要三件事

    var requiredArray = [(String, Range<String.Index>, Int)]()

    for (index, str) in arr.enumerated() {
        if let range = text.range(of: str) {
           requiredArray.append(str, range, index)
        }
    }

    print(requiredArray)

在上面的代码中，

我们已将index中str中的arr用作其identifier。
计算了range中str的{{1}}

因此，text包含requiredArray中的所有paragraphs以及它们的text和identifier。

如果您仍然遇到任何问题，请告知我。

在文本视图中使用splitbyBy函数获取范围

2 个答案: