Number+Format.swift

import Foundation

extension Int {
    public func decimal() -> String {
        let numberFormatter = NumberFormatter()
        numberFormatter.numberStyle = NumberFormatter.Style.decimal
        return numberFormatter.string(from: NSNumber(value: self))!
    }

    public func currencyKRW() -> String {
        let numberFormatter = NumberFormatter()
        numberFormatter.numberStyle = .currency
        numberFormatter.locale = Locale(identifier: "ko_KR")
        return numberFormatter.string(from: NSNumber(value: self))!
    }
}

extension Float {
    public func decimal() -> String {
        let numberFormatter = NumberFormatter()
        numberFormatter.numberStyle = NumberFormatter.Style.decimal
        return numberFormatter.string(from: NSNumber(value: self))!
    }

    public func currencyKRW() -> String {
        let numberFormatter = NumberFormatter()
        numberFormatter.numberStyle = .currency
        numberFormatter.locale = Locale(identifier: "ko_KR")
        return numberFormatter.string(from: NSNumber(value: self))!
    }
}

extension FloatingPoint {
    public var degreesToRadians: Self { return self * .pi / 180 }
    public var radiansToDegrees: Self { return self * 180 / .pi }
}