如何将Int转换为Swift中的字符 [英] How to convert an Int to a Character in Swift

问题描述

我在这里挣扎和失败超过十分钟，我给了。我需要将一个Int转换为一个字符在Swift，不能解决它。

I've struggled and failed for over ten minutes here and I give in. I need to convert an Int to a Character in Swift and cannot solve it.

问题

如何转换（ cast 字符（ char ）将 em>）in Swift？

How do you convert (cast) an Int (integer) to a Character (char) in Swift?

说明性问题/任务挑战

生成for循环打印字母'A'到'Z'，例如像这样：

Generate a for loop which prints the letters 'A' through 'Z', e.g. something like this:

    for(var i:Int=0;i<26;i++) {      //Important to note - I know 
        print(Character('A' + i));   //this is horrendous syntax...
    }                                //just trying to illustrate! :)

推荐答案

a 字符实例，但可以从整数到 UnicodeScalar 到字符并返回：

You can't convert an integer directly to a Character instance, but you can go from integer to UnicodeScalar to Character and back again:

let startingValue = Int(("A" as UnicodeScalar).value) // 65
for i in 0 ..< 26 {
    print(Character(UnicodeScalar(i + startingValue)))
}

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