How to determine if event.result is empty?

Similar Questions

• My event.result may or may not return a node in the xml file. How can I avoid that TypeError: Error #1009:

  My event.result may or may not return a node in the xml file. How can I avoid that TypeError: Error #1009: cannot access a property or method of a null object reference.

  I have a very simple question. I want to take the value of

  Event.Result.Item.nodeindex1.nodeindex2.Row.MyValue;

  and assign it to a text field

  mytextTi.text = event.result.item.nodeindex1.nodeindex2.row.myvalue;

  But if a part of the tree is missing, which is also valid, so I get TypeError: Error #1009: cannot access a property or method of a null object reference.

  I tried various solutions such as the following. Is there any simple way to do this?

  If (event.result.item.nodeindex1.nodeindex2.row.myvalue! = undefined)-does not work

  Unfortunately, one must test all levels to ensure that it is not null before the reference to it. You can take advantage of the short-circuit evaluation in tying together, for example

  if (event.result.item
      && event.result.item.nodeindex1
      && event.result.item.nodeindex1.nodeindex2
      && event.result.item.nodeindex1.nodeindex2.row
      && event.result.item.nodeindex1.nodeindex2.row.myvalue)
  {
      // access the variable
  }
  else
  {
      // one of the XML nodes in the path is null
  }
  

  Or you could stay away from her a little hacky and wrap the reference in a try/catch block.

  -Tom

  Flex SDK engineer

• How can I find the results of a 'chkdsk' after you restart the computer?

  Original title: checkdisk

  How can I find the results of a 'chkdsk' after you restart the computer. I am running "Vista Home Premium"

  Hello

  CHKDSK (short for Checkdisk)-<-- see="" the="" vista="" log="">
  http://en.Wikipedia.org/wiki/chkdsk

  Journal of checkdisk is EventViewer which is easy to read with the 2nd utility here.

  Look in the Event Viewer to see the newspaper.
  http://www.computerperformance.co.UK/Vista/vista_event_viewer.htm

  Control Panel - Classic view - administrative tools - event - left panel - Windows logs Viewer - under the
  above - click on request - in the middle column, scroll down the list that indicates the Source - click Wininit.
  good Panel - Wininit event - click on the event properties - new window will open with the journal you want.
  Scroll as needed. Event ID is 1001.

  ---------------------------------------------------------------------------------

  If you clear the log before you checkdisk annex, it is easier to find but by time and Date
  should be easy enough.

  MyEventViewer - free - a simple alternative in the standard Windows Event Viewer.
  TIP - Options - Advanced filter allows you to see a period of time instead of the entire file.
  http://www.NirSoft.NET/utils/my_event_viewer.html

  I hope this helps.

  Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.

• I need to know how to determine my processor architecture or know what it is

  I looked around the site for the answer to my question 'how do I determine processor architecture?', but all I got is how to determine the weather its 64-bit or 32-bit. I need to know if my processor is AMD or i386

  I have an Intel Celeron proccessor under Windows 7 Home Premium... Can you tell me, on this basis, weather or not im AMD or i386 or tell me how to determine

  How will I know if my computer is running 32-bit or a 64-bit version of Windows?

  To find out if your computer is running a 32-bit version or 64-bit Windows Windows 7 or Windows Vista, follow these steps:

  1. System opened by clicking on the button start , right click on computer and then click Properties.

  2. Under system, you can view the system type.

  How do I know if my computer can run a 64-bit version of Windows?

  To run a 64-bit version of Windows, your computer must have a processor 64-bit capable. To see if your processor is 64-bit capable windows 7 or Windows Vista, follow these steps:

  1. Open data on the performance and tools by clicking on the button start , and then clicking Control Panel. In the search box, type data and performance tools, and then, in the list of results, clickPerformance information and tools.

  2. Do one of the following:

     • In Windows 7, click view and print detailed performance and system information.

     • In Windows Vista, click view and print details.

  3. In the section system, you can see what type of operating system you are currently running underSystem type, and whether or not you can run a 64-bit of Windows 64-bit version. (If your computer is already running a 64 - bit windows version, you won't see 64 - bit capable list).

  
  You can also run CPU - Z [1] to determine if your processor is 64-bit capable.

  André

  [1] http://www.cpuid.com/softwares/cpu-z.html

  "A programmer is just a tool that converts the caffeine in code" Deputy CLIP - http://www.winvistaside.de/

• How to determine if an exe has been installed?

  Gurus:

  I have Windows 7 and Norton-Anti-anti-virus/firewall.

  I came across a strange pop-up message when I logged in to my computer today. A pop-up window, said that "do you want to install \SYSWOW\MAClean.exe (not sure the path or the name of the exe)? While I was doing research on it using another computer, he disappeared. What is one-sided, I don't think any exe with MA*.exe in the computer. My computer also seems to be suspended during indexing - it connects normally - no delay - if I remove the wireless connection. other times, he connects very well, even with the wireless connection is ON.

  My questions are:-

  (1) how to determine if an exe has been installed ("I see not all facilities in uninstall it or change of program" window in the control panel)?

  (2) is it possible to list out all messages 'Alerts' or 'Popup' that appears on the screen?

  Best regards

  San

  HI San,

  Thanks for posting your question on the Forum of the Microsoft community.

  This can happen if the corresponding .exe file is associated with a program that is installed on your computer. To check the instance of the file, you can check in the list of programs and features in Control Panel. Apart from this, it can be due to an infection by the virus.

  To know different alerts and notifications, you can open the Action Center in Windows and check important notifications or the needs of Windows to accomplish tasks. To do this, please refer to the following location: Start > Control Panel (see: large icons) > Action Center.

  Also, you can also check error messages in the event viewer for more information.

  (Click Start, type Event Viewer in the Start Search and press ENTER.)

  To check the program third party or service by giving pop-ups/alerts, you can start the computer in a selective startup with no third-party software in operation. This process is known as a clean boot.

  How to perform a clean boot in Windows
  http://support.Microsoft.com/kb/929135

  Note: See "How to reset the computer to start normally after a boot minimum troubleshooting" to reset the computer to start as usual after a repair.

  In addition, if your computer hangs or crashes often, I suggest you to try the steps from the following link.

  8.1 Windows, Windows 8 or Windows 7 hangs or freezes

  http://support.Microsoft.com/kb/2681286/en-us

  Warning: The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.

  I hope this information is useful. Please post for any further assistance.

• How to determine whether the current operating system is windows, or MAC?

  How to determine whether the current operating system is windows, or MAC?

  CSparrow wrote:

  operatingSystem var = $.getenv ("OS");

  operatingSystem = operatingSystem.toString ();

  alert (operatingSystem);

  It gives me Windows NT Windows 10

  With the help of:

  alert($.os);
  

  works for me.

  (result: Windows/64 10.0)

  and the Silly-V code

  Folder.FS

  gives you the name of the operating system

• How do you check mysqli_numrows ($result) for lines nil?

  I tried a query in PHPmy admin for a single record, and he returned

  0-0 1 lines total.

  Did the same for a nonexistent record and it came with zero results (empty)

  So it seems you need to do some math to whow several lines, there is, as it seems to return 0 when there is only a single record and 0 when there is none.

  How do you check mysql_inumrows ($result) for zero rows returned?

  Its maybe related to the fact that save shots start at 0.

  H Walker

  I don't use mysqli, but you should be able to do the following:

  If (! mysqli_numrows ($result) {})

  no lines have been returned

  }

  You're right PHPmyAdmin starts its numbers of transfer line with zero, not 1, so if there are 25 lines, they are listed as 0-24 lines, mysqli_numrows reports the sum, so it takes 1, not zero.

  Brégent, according to me, he was just using PHPmyAdmin to test his query.

• How Oracle determines an as key preserved table or not?

  I tried to join employees and departments in the HR schema. Normally, the departments is not preserved key in the join operation. But I fixed in the view so that each service has exactly one employee, dept_no to become the key for the join. But still, he said, "cannot change the table not preserved key." Any tips? the type of join (left or right or inside or outside) does affect the mechanism on how Oracle determine which are preserved to key and which are not? Thank you.

  Hello

  I would say yes, maybe can depend on join to condition paritially between tables 99% of the time. Because if you see the documentation it says

  "It is not necessary the keys of a table to be selected to be key preserved. It is sufficient if the keys have been selected, then they would also be key (s) of the result of the join. "

  'A table is kept if all keys in the table can also be a key to the result of the join key' - to turn the key role of role by providing the unique character.

  -Pavan Kumar N

• Copy out event.result a XML var XML data do not work

  So I'm pretty new to Flex, but learning with the help of a few books. I'm totally confused here though, as I'm copied an example right out of The Flex 3 Bible and its does not work the way I thin it should. My code is below. Here's my problem. I read in an XML from a php script. Works very well. In debugging, I can say that the event.result gets the XML as it should. In the resultHandler I am trying to copy it into a variable that I assigned called myCollection. That's all just not happens for a reason any. If I look at the variable in debugging, set to null. After that I'm trying to take innertags and get out (myCollection.trumpet.settings). Of course this does not work because myCollection is filled with nothing. It was just released an example page 654... I've been bangging my head against the wall for hours. any help on how to copy the data off event.result would be great.

  -----

  <? XML version = "1.0" encoding = "utf-8"? >
  "< mx:Application xmlns:mx ="http://www.adobe.com/2006/mxml"layout ="absolute">"
  
  < mx:Script >
  <! [CDATA]
  Import mx.rpc.events.ResultEvent;
  Import mx.collections.ArrayCollection;
  [Bindable]
  private var myCollection:XML;
  private var xReturn:Object;
  
  private void resultHandler(event:ResultEvent):void
  {
  myCollection = event.result as XML;
  xReturn = myCollection.trumpet.setting;
  TextBox.Text = myCollection;
  }
  []] >
  < / mx:Script >

  "" < mx:HTTPService id = "myService" url = "http://10.101.50.60/get_config.php"
  method = "POST" showBusyCursor = "true" result = "resultHandler (event)" / >

  < left mx:VBox = "25" top = "25" >
  < mx:Button label = "Get data" click = "myService.send ()" / >

  < mx:Label id = "textbox" >
  
  < / mx:Label >
  <!-< mx:DataGrid id = "myGrid" dataProvider = "{myCollection}" / >-->
  < / mx:VBox >
  
  < / mx:Application >

  Try setting the resultFormat = "e4x" in the HTTPService.

• Determine if the result of the query begins with a number

  I have the results of the query like this
  
  123PKM
  AAPL
  WB
  9865W
  FC
  QRST
  
  How can I determine if the result of the query begins with a digit?
  As 123PKM and 9865W do not start with a number.
  
  But others did not.

  The refind() would make this task very easily. Not tested, but I think that
  It would be the idea.

  #refind('^[0-9]',myQuery.aField,1,false) #.

  ColdFusin documentation in all directions will define completely the
  refind() function capabilities. It will give even some basics
  the syntax of the regular expressions used by this function.

• How to recover a file photo after emptying the trash

  How to recover a file photo after emptying the trash on my Mac book pro?

  Thanks for your response

  Restore your time machine backup file.

• In iMovie 9.0.4 How can I move events to an external hard drive?

  Note: I am writing this issue on behalf of my daughter, who is an old iMac running 10.6.8.   His version of iMovie is 9.0.4.

  She has about 50 GB, events which occupies about one-third of its HD.  There is an external hard drive with lots of available storage.

  How to pass these events to the external hard drive?

  Thank you

  Owen

  For a long time I used iMovie 9 but this link to the help info gives instructions: http://help.apple.com/imovie/#mov3ac6d42c

  Its probably safer to copy rather than move events (unless you already have a backup) just in case something goes wrong.

  Geoff.

• Envy touch: how to determine whether or not Windows 10 is an upgrade on an HP laptop?

  I need help on how to determine if the 10 Windows on the laptop is an upgrade to say Windows 8 or is not an upgrade.

  I had some problems with the audio drivers on an upgrade at the beginning to 10 Windows on another laptop HP and I understand that this issue has been resolved with HP laptops with Windows 10 which are not upgraded.

  Thank you

  Hello

  Can't get HP Envy 17 - So13ca (oh) but HP Envy 17 - S013ca (zero). The following link shows its specifications:

  http://support.HP.com/in-en/document/c05187473

  She has 10 Home 64-bit Windows pre-installed.

  Kind regards.

• How to determine the model to download drivers?

  Hello

  I want to download drivers win7, but I can't determine exactly what model I have.
  My model is: Toshiba Satellite A300-237. I have the 'model' and 'serial No. '. How to determine it the model for downloading drivers?
  I see "A300-ST4505" for example, but my laptop is ' A300-237 "and is not on the list."

  Thank you

  I fear you are wrong Mr. Don t download page drivers on the US page.
  If you have the European model Mobile you can find the drivers on http://eu.computers.toshiba-europe.com/innovation/download_drivers_bios.jsp

  Check it out.

• HP HDX X18T - 1200 CTO: RAM upgrade. How to determine the manufacturer RAM on HP HDX X18T news

  A 8 GB of RAM.  I think the upgrade to 16 GB of RAM.  (1) what is a compatible RAM and (2) how to determine exact manufacturer details RAM installed?  I would like to correspond with just over 8 GB of RAM the same, but what I can determine information system is that it has 8 GB of RAM.

  Here's what the service manual says about it:

  2 customer accessible/upgradable module slots supports supports up to 8 GB of system RAM PC2-6400, 800 MHz, DDR2 dual channel memory

  If you have 2 slots. Max memory is 8 GB of DDR2 - 800 SO - DIMM. The major modules of DDR2 were 4 gigs and a pair of them now at the retail price is about $200 if you have a few precious memory in your laptop and you have the more memory, this laptop can use. When this laptop is out, 8 GB of RAM was a fantastic thing.

  Post back with more questions.

  Repair manuals

  If it's 'the Answer' please click on 'Accept as SOlution' to help others find it.