Question

我的字符串看起来像下面显示的数组。如何将此字符串转换为如下所示的数组？我已经尝试了this解决方案，但是我收到了来自Xcode的错误（由于信号分段错误导致命令失败11）并且我认为这对编译器来说太难了。

字符串：

var list = "<strong>UP</strong>, <strong>UP</strong>, <strong>DOWN</strong>, <strong>UP</strong>"

目标阵列：

var array = [<strong>UP</strong>, <strong>UP</strong>, <strong>DOWN</strong>, <strong>UP</strong>]

当我尝试let arr = list.characters.split {$0 == ","}打印时：

[Swift.String.CharacterView(_core: Swift._StringCore(_baseAddress: 0x0000000103152e40, _countAndFlags: 9223372036854775811, _owner: nil)), Swift.String.CharacterView(_core: Swift._StringCore(_baseAddress: 0x0000000103152e48, _countAndFlags: 9223372036854775812, _owner: nil)), Swift.String.CharacterView(_core: Swift._StringCore(_baseAddress: 0x0000000103152e52, _countAndFlags: 9223372036854775817, _owner: nil)), Swift.String.CharacterView(_core: Swift._StringCore(_baseAddress: 0x0000000103152e66, _countAndFlags: 9223372036854775816, _owner: nil)), Swift.String.CharacterView(_core: Swift._StringCore(_baseAddress: 0x0000000103152e78, _countAndFlags: 9223372036854775815, _owner: nil))]

使用空格（let arr = list.characters.split {$0 == ", "}）会出现编译错误：

由于信号分段故障导致命令失败11

Answer 1

有一个函数可以做到这一点，componentsSeparatedByString

var array = list.componentsSeparatedByString(", ")

Answer 2

这会有效吗？

var list = "<strong>UP</strong>, <strong>UP</strong>, <strong>DOWN</strong>, <strong>UP</strong>"

do {
    //Create a reggae and replace "," with any following spaces with just a comma
    let regex = try NSRegularExpression(pattern: ", +", options: NSRegularExpressionOptions.CaseInsensitive)
    list = regex.stringByReplacingMatchesInString(list, options: NSMatchingOptions.WithoutAnchoringBounds, range: NSMakeRange(0, list.characters.count), withTemplate: ",")
    var array = list.characters.split { $0 == ","}.map(String.init)
} catch {
    //Bad regex created
}

编辑：更新了示例，以便以原生的快速方式删除componentsSeparatedByString。您的示例的问题是结果数组不包含字符串，但似乎是一个名为CharacterView的内部类。将这些映射回字符串会产生所需的输出。

输出：

[
    "<strong>UP</strong>", 
    "<strong>UP</strong>", 
    "<strong>DOWN</strong>", 
    "<strong>UP</strong>"
]

如何将看起来像数组值的字符串转换为数组？

2 个答案: