2] difference between array and array collection? ArrayCollection are basically used as Data providers to list based controls ( List, Tree, DataGrid ) as bindable data. If an array collection data gets changed, then the same gets reflected at places where it is used as dataprovider.
arvind hr-2 wrote: > > Hi Prajnith, > > > 1] difference between panel and canvas? > > In a panel you can give the title of the container which is not possible > in > Canvas > In panel you can specify the layout to absolute, horizontal and vertical > where as in canvas layout is set to absolute. > In panel you will have the borders on the four sides by default where as > in > Canvas you will not be having any border by default. > > 2] difference between array and array collection? > > The difference i think between Array and Arraycollection is that you can > manipulate the items in the ArrayCollection you can manipulate the items > using methods like addItemAt(), removeItemAt(), removeAll() > > 3] what is an event? > > Events let a developer know when something happens within a Flex > application. They can be generated by user devices, such as the mouse and > keyboard, or other external input, such as the return of a web service > call. > You can also create your own event. You can check the link below: > http://life.neophi.com/danielr/2006/06/events_in_flex_2.html > > 4] what is meta data? > This link will help you in understanding metadata tags > http://livedocs.adobe.com/flex/3/html/help.html?content=metadata_2.html > > 5] what is the use of bindable keyword? > Consider the example below: > > [Bindable] > private var myName:string = "My name"; > <mx:Text id="txt" text="{myName}"/> > <mx:Button id="btn" click="{myName = 'New name'}"/> > > If you have a Text control and you have to change the text value of the > control dynamically on click of the button. Then instead of changing the > text property of the Text control if you just change the value of the > Bindable variable the text property of the Text control will be updated. > > Thanks > Arvind > > > On 9/10/09, prajnith K <[email protected]> wrote: >> >> 1] difference between panel and canvas? >> 2] difference between array and array collection? >> 3] what is an event? >> 4] what is meta data? generally we write like this >> <mx:Metadata> >> [Event(name="custEvName")] >> </mx:Metadata> >> what is the use of this??? >> 5] what is the use of bindable keyword? >> >> >> Prajnith >> >> > >> > > > > > -- View this message in context: http://www.nabble.com/-flex_india%3A25171--Small-doubts...-tp25386663p25721858.html Sent from the Flex India mailing list archive at Nabble.com. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Flex India Community" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/flex_india?hl=en -~----------~----~----~----~------~----~------~--~---
