字符串到字符串数组

阿维斯·莫宾

我需要从字符串中获取字符串数组，例如从此字符串中

"1. Grease cake pans with oil spray and preheat your oven to 350°F.2. Dissolve the coffee powder in the hot water.3. Combine the flour with cocoa powder, sugar, baking powder, baking soda, salt oil, buttermilk, eggs, in a large bowl."

到

["1. Grease cake pans with oil spray and preheat your oven to 350°F.",
 "2. Dissolve the coffee powder in the hot water."
 "3. Combine the flour with cocoa powder, sugar, baking powder, baking soda, salt oil, buttermilk, eggs, in a large bowl."]

在正常情况下，基于字符串中的数字

String.components(separatedBy: <#T##CharacterSet#>)

工作正常，但在这种情况下我无法弄清楚。提前致谢

里奥·达布斯

您可以尝试匹配任何数字（1 个或多个）后跟一个点和一个空格。那么除了一个句号后跟一个句号之外的任何东西：

let string = "1. Grease cake pans with oil spray and preheat your oven to 350°F.2. Dissolve the coffee powder in the hot water.3. Combine the flour with cocoa powder, sugar, baking powder, baking soda, salt oil, buttermilk, eggs, in a large bowl."

let pattern = #"\d{1,}. {1}[^.]+.{1}"#

let sentences = try! NSRegularExpression(pattern: pattern)
    .matches(in: string, range: .init(string.startIndex..., in: string))
    .map {  string[Range($0.range, in: string)!] }

print(sentences)  // "["1. Grease cake pans with oil spray and preheat your oven to 350°F.", "2. Dissolve the coffee powder in the hot water.", "3. Combine the flour with cocoa powder, sugar, baking powder, baking soda, salt oil, buttermilk, eggs, in a large bowl."]\n"

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