nerdsupremacist

fileprivate let badChars = CharacterSet.alphanumerics.inverted

extension String {
    var uppercasingFirst: String {
        return prefix(1).uppercased() + dropFirst().lowercased()
    }

    var lowercasingFirst: String {
        return prefix(1).lowercased() + dropFirst().lowercased()
    }

nerdsupremacist

import Foundation
import SystemConfiguration.CaptiveNetwork

func ssid() -> String? {
    let interfaces = CNCopySupportedInterfaces() as [AnyObject]?
    let interfaceNames = interfaces?.map { $0 as! CFString }
    let interfaceDictionaries = interfaceNames?.flatMap { CNCopyCurrentNetworkInfo($0) as? [String : AnyObject] }
    return interfaceDictionaries?.flatMap { $0[kCNNetworkInfoKeySSID as String] as? String }
                                 .first
}