问题描述
限时送ChatGPT账号..请帮助我,我使用 Xcode 8.3(swift 3.1),trimmingCharacters
功能不起作用.我的代码如下:
Please help me, I use Xcode 8.3(swift 3.1), the function trimmingCharacters
not work. My code as below:
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
if var searchStr = textField.text{
let _searchStr = searchStr.trimmingCharacters(in: .whitespaces)
print("After trimming:\(_searchStr)")
}
}
textfield 中的输入是 409 huỳnh
打印结果是 409 huỳnh
不符合预期:409huỳnh.
The input in textfield is 409 huỳnh
and the print result is 409 huỳnh
not as expected: 409huỳnh .
推荐答案
来自文档:
一个新的字符串,通过从两端去除包含在集合中的接收者字符组成.
A new string made by removing from both ends of the receiver characters contained in set.
它不会删除字符串中的字符.
It does not remove characters within the string.
您可以用正则表达式替换字符串中对应于 .whitespaces
字符集的空格:
You can replace whitespaces – corresponding to the .whitespaces
character set – in the string with regular expression:
let _searchStr = searchStr.replacingOccurrences(of: "\\s", with: "", options: .regularExpression)
这篇关于修剪字符不适用于 iOS 10.3 Xcode8.3的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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