Swift: Check if String contains Character? [duplicate]

问题

This question already has answers here:

Swift: Check String if it has an element in an Array (2 answers)

Closed 4 years ago.

How do I check if a specific string: String contains a certain character: Character?

回答1:

string.characters.contains(character)

Example:

let string = "Hello, World!"
let character: Character = "e"

if string.characters.contains(character) {
    print("\(string) contains \(character).")
} else {
    print("\(string) doesn't contain \(character).")
}

回答2:

let char: Character = "e"

let string: String = "William"

let result = string.rangeOfString("\(char)")

if let result = result {
    //The string contains the character
    print("It contains")
}else{
    //The string doesn't contain the character
    print("It doesn't contain")
}

来源：https://stackoverflow.com/questions/33346666/swift-check-if-string-contains-character