我想显示警报，如果myString存在于myArray：
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情况相反，则警报不会显示:(
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()
}
我如何才能找到myString在myArray忽略大小写？
我猜您正在寻找的是类似以下内容的东西：
let search = "b"
let arrayToSearch = ["A", "B", "C"]
let searchResult = arrayToSearch.filter() { $0.caseInsensitiveCompare(search) == NSComparisonResult.OrderedSame }
if searchResult.count != 0 {
print("'\(search)' matched to '\(searchResult[0])'")
} else {
print("'\(search)'not found")
}
将输出
“ b”与“ B”匹配
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