import Foundation

extension String {

    var singleLined: String {
        components(separatedBy: .newlines)
        .joined(separator: " ")
    }

    var trimmed: String {
        trimmingCharacters(in: .whitespacesAndNewlines)
    }

    var nonEmpty: String? {
        self != "" ? self : nil
    }
}

extension Array where Element == String {

    var list: String {
        joined(separator: ", ")
    }
}

extension Sequence where Element == String {

    var sortedList: String {
        sorted().list
    }
}