ElegyD

import java.text.BreakIterator

fun String.countWords(): Int {
    fun isWord(word: String): Boolean {
        if (word.length == 1) {
            return word[0].isLetterOrDigit()
        }
        return "" != word.trim()
    }

ElegyD

/// Offsets every character in iso String by a fixed amount to get the regional indicator symbol.
/// iso needs to be uppercase. 'A' for example is then 🇦.
/// For example an iso "DE" returns "🇩🇪"
fun getUnicodeFlag(iso: String): String {
    var flag = ""
    val offset = 0x1F1A5
    (0 until iso.length)
            .map { Character.codePointAt(iso, it) + offset }
            .map { Character.toChars(it) }
            .forEach { flag += String(it) }

ElegyD

extension UIImage {
    func resized(to maxSize: CGFloat) -> UIImage? {
        var size = self.size
        if size.width <= maxSize && size.height <= maxSize {
            return self
        }
        let scaleFactor = maxSize / max(size.width, size.height)
        size.width *= scaleFactor
        size.height *= scaleFactor
        

ElegyD

import UIKit

extension Sequence {
    func groupByDay(dateKey: (Iterator.Element) -> Date, order: ComparisonResult = .orderedAscending) -> [[Iterator.Element]] {
        var groups: [[Iterator.Element]] = []
        for element in self {
            let key = dateKey(element)
            guard let dayIndex = groups.firstIndex(where: { $0.contains(where: { Calendar.current.isDate(dateKey($0), inSameDayAs: key) }) }) else {
                guard let nextIndex = groups.firstIndex(where: { $0.contains(where: { dateKey($0).compare(key) == order }) }) else {
                    groups.append([element])

ElegyD

extension String {
    /// Returns a new string containing the characters of the String from the one at a given index to the end. If 'from' exceeds endIndex it returns an empty string.
    func substring(from: Int) -> String {
        guard let offsetStartIndex = index(startIndex, offsetBy: from, limitedBy: endIndex) else { return "" }
        return self[offsetStartIndex..<endIndex]
    }
    
    /// Returns a new string containing the characters of the String up to the one at a given index. If 'to' exceeds endIndex it returns the string as it was.
    func substring(to: Int) -> String {
        return self[startIndex..<(index(startIndex, offsetBy: to, limitedBy: endIndex) ?? endIndex)]

ElegyD

import CoreLocation

static func vCardURL(from coordinate: CLLocationCoordinate2D, with name: String?) -> URL {
    let vCardFileURL = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("vCard.loc.vcf")
    
    let vCardString = [
        "BEGIN:VCARD",
        "VERSION:4.0",
        "FN:\(name ?? "Shared Location")",
        "item1.URL;type=pref:http://maps.apple.com/?ll=\(coordinate.latitude),\(coordinate.longitude)",

ElegyD

import UIKit

enum SeparatorType {
    case horizontal
    case vertical
}

let kTotalSize: CGFloat = 18                            // the total height of the separator (including parts that are not visible)
let kVisibleSize: CGFloat = 8                           // the height of the visible portion of the separator
let kMargin: CGFloat = (kTotalSize - kVisibleSize) / 2  // the height of the non-visible portions of the separator (i.e. above and below the visible portion)