如何在Swift中生成一个随机的unicode字符？ [英] How can I generate a random unicode character in Swift?

问题描述

我目前尝试创建一个随机的unicode字符生成失败，如错误，如我在其他问题这里。

如何在Swift中生成一个随机的unicode字符？

解决方案

Unicode标量值

任何Unicode代码点（高代理和低代理代码
除外）。换句话说，整数范围为0到D7FF和E000
到10FFFF（含）。

一个小代码的代码段。

此代码的工作原理

  func randomUnicodeCharacter > String {
 let i = arc4random_uniform（1114111）
 return（i> 55295&& i< 57344）？ randomUnicodeCharacter（）：String（UnicodeScalar（i））
} 
 randomUnicodeCharacter（）
  

< h3>此代码 不 工作！

  UInt32 = 65536 
 let i = arc4random_uniform（N）
 var c = String（UnicodeScalar（i））
 print（c，appendNewline：false）
  

我对有点困惑此和此。 [最大值：65535]

My current attempts at creating a random unicode character generate have failed with errors such as those mentioned in my other question here. It's obviously not as simple as just generating a random number.

Question: How can I generate a random unicode character in Swift?

解决方案

Unicode Scalar Value

Any Unicode code point except high-surrogate and low-surrogate code points. In other words, the ranges of integers 0 to D7FF and E000 to 10FFFF inclusive.

So, I've made a small code's snippet. See below.

This code works

func randomUnicodeCharacter() -> String {
    let i = arc4random_uniform(1114111)
    return (i > 55295 && i < 57344) ? randomUnicodeCharacter() : String(UnicodeScalar(i))
}
randomUnicodeCharacter()

This code doesn't work!

let N: UInt32 = 65536
let i = arc4random_uniform(N)
var c = String(UnicodeScalar(i))
print(c, appendNewline: false)

I was a little bit confused with this and this. [Maximum value: 65535]

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