ios,string,swift,unicode,character , Characters and Strings in Swift


Characters and Strings in Swift

Question:

Tag: ios,string,swift,unicode,character

Reading the documentation and this answer, I see that I can initialize a Unicode character in either of the following ways:

let narrowNonBreakingSpace: Character = "\u{202f}"
let narrowNonBreakingSpace = "\u{202f}"

As I understand, the second one would actually be a String. And unlike Java, both of them use double quotes (and not single quotes for characters). I've seen several examples, though, where the second form (without Character) is used even though the variable is only holding a single character. Is that people just being lazy or forgetting to write Character? Or does Swift take care of all the details and I don't need to bother with it? If I know I have a constant that contains only a single Unicode value, should I always use Character?


Answer:

When a type isn't specified, Swift will create a String instance out of a string literal when creating a variable or constant, no matter the length. Since Strings are so prevalent in Swift and Cocoa/Foundation methods, you should just use that unless you have a specific need for a Character—otherwise you'll just need to convert to String every time you need to use it.


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