Array utility routines.

Array+Utility.swift

//  Array+Extensions.swift
//  Attribution 4.0 International (CC 4.0), see bottom for license details.

import Foundation

extension Array where Element == String? {

    // converts an array of optional accessibility labels to a single accessibility label that can be set on an accessibility element
    var convertedToAccessibilityLabel: String {
        return self.compactMap { $0 }.joined(separator: ", ")
    }
}

extension Array {
    public mutating func rearrange(fromIndex: Int?, toIndex: Int) {
        guard let from = fromIndex else {
            return
        }
        let element = self.remove(at: from)
        self.insert(element, at: toIndex)
    }
}

// This work is licensed under Attribution 4.0 International (CC 4.0)
// You are free to:
// Share — copy and redistribute the material in any medium or format
// Adapt — remix, transform, and build upon the material
// for any purpose, even commercially.
//
// This license is acceptable for Free Cultural Works.
// The licensor cannot revoke these freedoms as long as you follow the license terms.
// See https://creativecommons.org/licenses/by/4.0/