ActionScript 3.0 + Berechnen von Zeitraum zwischen zwei Daten?

Erstellte ich eine ActionScript-TimeSpan-Klasse mit einer ähnlichen API-System.Zeitspanne, um die leere zu füllen, aber es gibt Unterschiede aufgrund der fehlenden operator zu überladen. Sie können es verwenden, etwa so:

TimeSpan.fromDates(later, earlier).totalDays;

Unten ist der code für die Klasse (sorry für den großen post - ich habe nicht die Unit-Tests 😉

/**
 * Represents an interval of time 
 */ 
public class TimeSpan
{
    private var _totalMilliseconds : Number;

    public function TimeSpan(milliseconds : Number)
    {
        _totalMilliseconds = Math.floor(milliseconds);
    }

    /**
     * Gets the number of whole days
     * 
     * @example In a TimeSpan created from TimeSpan.fromHours(25), 
     *          totalHours will be 1.04, but hours will be 1 
     * @return A number representing the number of whole days in the TimeSpan
     */
    public function get days() : int
    {
         return int(_totalMilliseconds / MILLISECONDS_IN_DAY);
    }

    /**
     * Gets the number of whole hours (excluding entire days)
     * 
     * @example In a TimeSpan created from TimeSpan.fromMinutes(1500), 
     *          totalHours will be 25, but hours will be 1 
     * @return A number representing the number of whole hours in the TimeSpan
     */
    public function get hours() : int
    {
         return int(_totalMilliseconds / MILLISECONDS_IN_HOUR) % 24;
    }

    /**
     * Gets the number of whole minutes (excluding entire hours)
     * 
     * @example In a TimeSpan created from TimeSpan.fromMilliseconds(65500), 
     *          totalSeconds will be 65.5, but seconds will be 5 
     * @return A number representing the number of whole minutes in the TimeSpan
     */
    public function get minutes() : int
    {
        return int(_totalMilliseconds / MILLISECONDS_IN_MINUTE) % 60; 
    }

    /**
     * Gets the number of whole seconds (excluding entire minutes)
     * 
     * @example In a TimeSpan created from TimeSpan.fromMilliseconds(65500), 
     *          totalSeconds will be 65.5, but seconds will be 5 
     * @return A number representing the number of whole seconds in the TimeSpan
     */
    public function get seconds() : int
    {
        return int(_totalMilliseconds / MILLISECONDS_IN_SECOND) % 60;
    }

    /**
     * Gets the number of whole milliseconds (excluding entire seconds)
     * 
     * @example In a TimeSpan created from TimeSpan.fromMilliseconds(2123), 
     *          totalMilliseconds will be 2001, but milliseconds will be 123 
     * @return A number representing the number of whole milliseconds in the TimeSpan
     */
    public function get milliseconds() : int
    {
        return int(_totalMilliseconds) % 1000;
    }

    /**
     * Gets the total number of days.
     * 
     * @example In a TimeSpan created from TimeSpan.fromHours(25), 
     *          totalHours will be 1.04, but hours will be 1 
     * @return A number representing the total number of days in the TimeSpan
     */
    public function get totalDays() : Number
    {
        return _totalMilliseconds / MILLISECONDS_IN_DAY;
    }

    /**
     * Gets the total number of hours.
     * 
     * @example In a TimeSpan created from TimeSpan.fromMinutes(1500), 
     *          totalHours will be 25, but hours will be 1 
     * @return A number representing the total number of hours in the TimeSpan
     */
    public function get totalHours() : Number
    {
        return _totalMilliseconds / MILLISECONDS_IN_HOUR;
    }

    /**
     * Gets the total number of minutes.
     * 
     * @example In a TimeSpan created from TimeSpan.fromMilliseconds(65500), 
     *          totalSeconds will be 65.5, but seconds will be 5 
     * @return A number representing the total number of minutes in the TimeSpan
     */
    public function get totalMinutes() : Number
    {
        return _totalMilliseconds / MILLISECONDS_IN_MINUTE;
    }

    /**
     * Gets the total number of seconds.
     * 
     * @example In a TimeSpan created from TimeSpan.fromMilliseconds(65500), 
     *          totalSeconds will be 65.5, but seconds will be 5 
     * @return A number representing the total number of seconds in the TimeSpan
     */
    public function get totalSeconds() : Number
    {
        return _totalMilliseconds / MILLISECONDS_IN_SECOND;
    }

    /**
     * Gets the total number of milliseconds.
     * 
     * @example In a TimeSpan created from TimeSpan.fromMilliseconds(2123), 
     *          totalMilliseconds will be 2001, but milliseconds will be 123 
     * @return A number representing the total number of milliseconds in the TimeSpan
     */
    public function get totalMilliseconds() : Number
    {
        return _totalMilliseconds;
    }

    /**
     * Adds the timespan represented by this instance to the date provided and returns a new date object.
     * @param date The date to add the timespan to
     * @return A new Date with the offseted time
     */     
    public function add(date : Date) : Date
    {
        var ret : Date = new Date(date.time);
        ret.milliseconds += totalMilliseconds;

        return ret;
    }

    /**
     * Creates a TimeSpan from the different between two dates
     * 
     * Note that start can be after end, but it will result in negative values. 
     *  
     * @param start The start date of the timespan
     * @param end The end date of the timespan
     * @return A TimeSpan that represents the difference between the dates
     * 
     */     
    public static function fromDates(start : Date, end : Date) : TimeSpan
    {
        return new TimeSpan(end.time - start.time);
    }

    /**
     * Creates a TimeSpan from the specified number of milliseconds
     * @param milliseconds The number of milliseconds in the timespan
     * @return A TimeSpan that represents the specified value
     */     
    public static function fromMilliseconds(milliseconds : Number) : TimeSpan
    {
        return new TimeSpan(milliseconds);
    }

    /**
     * Creates a TimeSpan from the specified number of seconds
     * @param seconds The number of seconds in the timespan
     * @return A TimeSpan that represents the specified value
     */ 
    public static function fromSeconds(seconds : Number) : TimeSpan
    {
        return new TimeSpan(seconds * MILLISECONDS_IN_SECOND);
    }

    /**
     * Creates a TimeSpan from the specified number of minutes
     * @param minutes The number of minutes in the timespan
     * @return A TimeSpan that represents the specified value
     */ 
    public static function fromMinutes(minutes : Number) : TimeSpan
    {
        return new TimeSpan(minutes * MILLISECONDS_IN_MINUTE);
    }

    /**
     * Creates a TimeSpan from the specified number of hours
     * @param hours The number of hours in the timespan
     * @return A TimeSpan that represents the specified value
     */ 
    public static function fromHours(hours : Number) : TimeSpan
    {
        return new TimeSpan(hours * MILLISECONDS_IN_HOUR);
    }

    /**
     * Creates a TimeSpan from the specified number of days
     * @param days The number of days in the timespan
     * @return A TimeSpan that represents the specified value
     */ 
    public static function fromDays(days : Number) : TimeSpan
    {
        return new TimeSpan(days * MILLISECONDS_IN_DAY);
    }

    /**
     * The number of milliseconds in one day
     */ 
    public static const MILLISECONDS_IN_DAY : Number = 86400000;

    /**
     * The number of milliseconds in one hour
     */ 
    public static const MILLISECONDS_IN_HOUR : Number = 3600000;

    /**
     * The number of milliseconds in one minute
     */ 
    public static const MILLISECONDS_IN_MINUTE : Number = 60000;

    /**
     * The number of milliseconds in one second
     */ 
    public static const MILLISECONDS_IN_SECOND : Number = 1000;
}

InformationsquelleAutor der Antwort Richard Szalay

für einige einzelne Funktionen, wie das meinem vorzuziehen...
[condensed von Richard Szalay code]

public function timeDifference(startTime:Date, endTime:Date) : String
{
if (startTime == null) { return "startTime empty."; }
if (endTime   == null) { return "endTime empty."; }
var aTms = Math.floor(endTime.valueOf() - startTime.valueOf());
return "Time taken:  "  
    + String( int(aTms/(24*60*+60*1000))     ) + " days, "
    + String( int(aTms/(    60*60*1000)) %24 ) + " hours, "
    + String( int(aTms/(       60*1000)) %60 ) + " minutes, "
    + String( int(aTms/(        1*1000)) %60 ) + " seconds.";
}

InformationsquelleAutor der Antwort kam

Um der Genauigkeit Willen, den obigen post von Russell korrekt ist bis Sie 25 Tage Unterschied, dann wird die Zahl zu groß für die int-variable.
Daher erklären die millisecondDifference:Number;

Kann es einige Unterschied zwischen den dokumentierten getTime() und valueOf(), aber in der Wirkung kann ich es nicht sehen

InformationsquelleAutor der Antwort

ArgumentValidation ist eine andere Klasse von Mr-Szalays, hat einige Prüfungen zu machen sicher, dass jede Methode hat auch die richtigen Werte für die Durchführung der Aufgaben, die Sie nicht werfen, nicht definierbarer Fehler. Sie sind nicht unerlässlich, um das TimeSpan-Klasse zu arbeiten, so konnte man nur kommentieren Sie, und die Klasse wird korrekt funktionieren.

Reichen kann post das Argument Validierung Klasse hier so gut, wie es ist sehr praktisch, aber ich werde verlassen, dass bis auf ihn ;P

InformationsquelleAutor der Antwort James Hay

Habe ich portiert RoR-Funktion distance_of_time_in_words auf AS3 und fügte hinzu, es zu TimeSpan-Klasse. es steht auf meinem blog http://denisvolokh.blogspot.com/2010/04/distanceoftimeinwords-on-as3.html

InformationsquelleAutor der Antwort Denis VOlokh