如何在Swift中检查字符串的最后一个字符是否等于“ a”

Question

For example:

I want to get the text/word by user and if this word's last character is "a" I want to change this "a" to "b"...How should i have to write this code?

let getText = txtWord.text

if

......

Answer 1

You need to check if the last char is "a" .

If so just drop the last char and append the new one.

var text = txtWord.text

if text.characters.last == "a" {
    text = String(text.characters.dropLast()) + "b"
}

Answer 2

swift 4:

let abc:String = txtWord.text
var newABC:String!
if abc.suffix(1) == 'a'{

   newABC = abc + "b"
   print("Done")
}