Flex :: ArrayCollection Detecting Duplicates By Property Value?
Nov 19, 2010
I'm curious of the best way to detect that an arraycollection contains duplicate objects as determined by an object's property value. For example, var _myArrayCollection:ArrayCollection = new ArrayCollection([{name: "name1", value: "value1"}, {name: "name2", value: "value2"}, {name: "name1", value: "value3"}]);Notice that this arraycollection has 3 items. 2 of the items have the same value for the name property. I would consider this a duplicate. Any ideas what the body of this method would look like? I have ideas but none of them feel very elegant.
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Jul 13, 2010
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Oct 14, 2009
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Oct 27, 2009
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Dec 2, 2010
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[Code]....
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Jul 13, 2010
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May 23, 2011
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Sep 11, 2010
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Oct 7, 2011
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* no server side code for filtering. it is only flex side filtering.
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Feb 4, 2011
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[URL]
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Jul 26, 2011
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Jan 9, 2011
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Sep 22, 2009
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Mar 12, 2010
Context:
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Dec 2, 2010
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Mar 1, 2011
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May 14, 2011
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Jul 14, 2009
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Aug 3, 2009
After applying a numeric sort to my dataprovider(Array Collection), I can not reorder the items via a tilelist. Do I need to remove the sort from the arrayCollection. If so, is it just a case of setting collection.sort = null ?
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Aug 6, 2009
I am trying to get the contents of an arraycollection to print out using my debug function (which takes a string). Anyone know how to do this? I would like it would be rather easy but can't seem to find a way...I get the word "Object" printed a lot of the time.
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Nov 11, 2009
I want to load data from a external XML file, using a HTTPService, and on the ResultEvent of the same HTTPService i want him to populate a ArrayCollection with the data from the XML.
I think a ArrayCollection is the ideal for this XML.
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Feb 2, 2010
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Feb 5, 2010
I have a main class ClassA that has a bunch of "normal" properties that are simple datatype like ints, strings, etc. It also has one property ("childItems") that is an ArrayCollection of ClassB.I am using an ArrayCollection of ClassA as the source for an hierarchical data provider for an AdvancedDataGrid. I set the childrenField to "childItems".
I want to display some information about the list of ClassB objects in a nested table and pie chart, an AdvancedDataGridItemRendererProvider (columnIndex = 0, columnSpan = 0, depth = 2) and point it to my custom renderer which is an HBox with the table and the pie chart in it.
In order to see what is being set, I override the "set data" function in my custom renderer and what I see is that each instance of ClassB in the ArrayCollection is passed to the renderer separately.
Here is my question: I expected the whole ArrayCollection of ClassB instances to be passed to the custom renderprovider once and not each item in the child list individually. How do I make the ADG understand that the whole property is supposed to be passed as the data to the renderer and not each entry separately? Btw, when I change the data type of "childItems" from ArrayCollection to ArrayList, the whole list gets passed and I can easily do what I want to do. But based on my understanding, ArrayList is not really supposed to be used and ArrayCollection is better or at least more common.
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Mar 19, 2010
I have an ArrayCollection as mentioned below.
private var initDG:ArrayCollection = new ArrayCollection([
{fact: "Order #2314", appName: "AA"},
{fact: "Order #2315", appName: "BB"}[code].....
I want to populate a ComboBox with UNIQUE VALUES of "appName" field from the ArrayCollection initDG.
<mx:ComboBox id="appCombo" dataProvider="{initDG}" labelField="appName"/>
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Mar 21, 2010
is it somehow possible to get item's depth in ArrayCollection?
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Apr 15, 2010
I have a datagrid that gets its data from a webservice.When data from the webservice is retrived it calls the following function:
private function onListReg():void
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arrRegOld = WSAutoreg.list.lastResult as ArrayCollection;
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[code].....
The intent is when I hit a update button, it compares arrRegOld with arrReg and see if any values have changes. The problem is whenever I change values on the Datagrid it changes on both the dataProvider and on both ArrayCollections.What should I do so that the binding applies only to one ArrayCollection?
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