我的主力博客：半亩方塘
Strings
It's possible to add characters to a string. However,Swift's strictness with types means you have to be explicit when doing so,just as you have to be when you work with numbers if one is anInt@H_404_21@and the other is aDouble@H_404_21@.
To add a character to a string,you do this:
let exclamationMark: Character = "!" var message = "Hello" + " my name is Matt" message += String(exclamationMark)
