您可以使用此

Question

我有一堆地址作为字符串，采用以下示例格式：

8 Smith st，Sydney，New South Wales，Australia

但是，我想将它们修改为以下格式：

8 Smith st，Sydney

我怎样才能实现这一目标？感谢。

Answer 1

您可以使用此

修剪空白区域

Scanner scanner = new Scanner(new File("D:\\myFolder\\myfile.csv"));

在你的Case中，首先你必须在Array中转换它然后将它转换为字符串，如下面的例子所示

var myString = "    Let's trim the whitespace    "
var newString = myString.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceCharacterSet())
//Returns "Let's trim the whitespace"

For More you can learn From here

Answer 2

在你的Case中，首先你必须在Array中转换它然后将它转换为字符串，如下面的例子所示

var myString = "8 Smith st, Sydney, New South Wales, Australia"
var myArray = myString.componentsSeparatedByString(",")
//Returns an array with the following values:  ["8 Smith st", " Sydney", " New South Wales", " Australia"]

if myArray.count > 1
{
    println(myArray[0]) //8 Smith st
    println(myArray[1]) //Sydney
}

Answer 3

将字符串/文字截断为特定长度

如果您输入了句子/文本块，并且只想从文本中保存指定的长度。将以下扩展名添加到Class

extension String {

   func trunc(_ length: Int) -> String {
    if self.characters.count > length {
        return self.substring(to: self.characters.index(self.startIndex, offsetBy: length))
    } else {
        return self
    }
  }
}

使用

var str = "Lorem Ipsum is simply dummy text of the printing and typesetting industry."
//str is length 74
print(str)
//O/P:  Lorem Ipsum is simply dummy text of the printing and typesetting industry.

str = str.trunc(40)
print(str)
//O/P: Lorem Ipsum is simply dummy text of the

我怎样修剪这个Swift字符串？

3 个答案:

您可以使用此