如何在数组中查找字符串元素而不考虑大写或小写

Question

如果 myString 出现在 myArray 中，我想显示警报：

var myString = "A"
var myArray = [A]
if contains(self.arrayGroup, self.txtGroupName.text) {
   let alert = UIAlertView()
        alert.title = "Sorry :("
        alert.message = "Duplicate Name"
        alert.addButtonWithTitle("OK")
        alert.show()
}

但是如果 myString 是相反的情况，则不会显示警报 :(

var myStr = "As"
var myArr = [AS]
if contains(self.arrayGroup, self.txtGroupName.text) {
   let alert = UIAlertView()
        alert.title = "Sorry :("
        alert.message = "Duplicate Name"
        alert.addButtonWithTitle("OK")
        alert.show()
}

如何在 myArray 中忽略大小写找到 myString？

Answer 1

我猜你要找的是类似下面的东西：

let search = "b"
let arrayToSearch = ["A", "B", "C"]
let searchResult = arrayToSearch.filter() { [=10=].caseInsensitiveCompare(search) == NSComparisonResult.OrderedSame }
if searchResult.count != 0 {
    print("'\(search)' matched to '\(searchResult[0])'")
} else {
    print("'\(search)'not found")
}

将输出

'b' matched to 'B'

如何在数组中查找字符串元素而不考虑大写或小写

How to find string element in array regardless of upper or lower case

arrays

case-sensitive

ios

swift