Sources/BFKit/Linux/Foundation/Set+Extensions.swift
//
// Set+Extensions.swift
// BFKit-Swift
//
// The MIT License (MIT)
//
// Copyright (c) 2015 - 2019 Fabrizio Brancati.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
import Foundation
// MARK: - Set extension
/// This extension adds some useful functions to Set.
public extension Set {
/// Randomly selects an element from self and returns it.
///
/// - returns: An element that was randomly selected from the set.
func random() -> Element {
let randomOffset = Int.random(in: 0...count - 1)
return self[index(startIndex, offsetBy: randomOffset)]
}
}