27 lines
651 B
Swift
27 lines
651 B
Swift
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//
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// String.swift
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//
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//
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// Created by AntonovIA on 12.10.2020.
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//
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import Foundation
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extension String {
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private static let alphanumeric = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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static func random(length: Int, allowedChars: String? = nil) -> String {
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let seq: String = ((allowedChars == nil) ? alphanumeric : allowedChars!) as String
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var rnd: String = ""
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for _ in 0..<length {
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let randInt = arc4random_uniform(UInt32(seq.count))
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rnd += "\(seq[seq.index(seq.startIndex, offsetBy: Int(randInt))])"
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}
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return rnd
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}
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}
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