CODEWITHSUNDEEP
actionscript-3sortingobjectvector
Marek Mensik
Marek Mensik

Reputation: 33

Sort a Vector of Objects in ActionScript3

I have this Vector of Objects and each Object has some properities(date, name, id, etc.).

I want to sort the vector by, lets say, a date. How do I do this? I've seen, that an Array would support sortOn() function, but Vectors don't have it.

Object:

public final class DisciplineEvent {
    public var id:Number;
    public var name:String;
    public var date:Date;}

Thanx for answering.

Upvotes: 3

Views: 6158

Answers (2)

Marty
Marty

Reputation: 39456

Your best bet for speed, access to Array's sortOn() and having a Vector as the result would be to just copy the content of the Vector across to an Array, use sortOn() and then copy the content back across. Example:

var vec:Vector.<Object> = new <Object>[
    { a: 2 }, { a: 1 }, { a: 12 }, { a: 7 }
];

var array:Array = [];
while(vec.length > 0) array.push(vec.pop());

array.sortOn("a", Array.NUMERIC|Array.DESCENDING);
while(array.length > 0) vec.push(array.pop());

for each(var i:Object in vec)
{
    trace(i.a);
}

Upvotes: 5

Marijn
Marijn

Reputation: 810

Let's say you have this vector:

var objects:Vector<ObjectType> = new Vector<ObjectType>();
objects.push(obj1, obj2);

You would sort it with:

var sortingFunction:Function = function(itemA:ObjectType, itemB:ObjectType):Number {
    if (itemA.date.valueOf() < itemB.date.valueOf()) return -1; //ITEM A is before ITEM B
    else if (itemA.date.valueOf() > itemB.date.valueOf()) return 1; //ITEM A is after ITEM B
    else return 0; //ITEM A and ITEM B have same date
}

objects.sort(sortingFunction);

more information can be found here: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/Vector.html#sort()

Upvotes: 6

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