Type erasure and relationship of cast.

Similar Questions

• Type mismatch and VI properties in 'for more specific classes.

  Dear all

  I have a Subvi trying to modify the properties of certain objects on the main pane of the front, in the example I have attached to this message it works well, but when I use the same Subvi in my main application which is a little bigger and has more hierarchical levels (that's why I join this one) it comes across some errors.

  Once running "to a more specific class' in the Sub - VI called ("MultpObj1N"), it gives this error that" LabVIEW: Type mismatch: object cannot be cast to the specified type.»

  I have no idea what could be the reason for this. Do you have any idea what it could be?

  Best regards

  Afshin

  Dear Darren

  Suddenly, I realized that my problem just happens to group objects (no cards) and like you said the type of data were different. Because I wanted to just access the visibility as you suggested, I've changed the strict form for normal and it worked.

  Thank you very much for your advice!

  BR

  Afshin

• Not sure about the type erasure?

  Hi, my doubt is erase type. Here's the class with generics.
  

  public class Person<T>{
      
         public T add(T a){
                 System.out.println("happy");
         }
  }

  When compiled type erasure happens. I mean when it is converted to type of class erase file arrives. so the code might be as follows

  public class Person{
  
           public Object add(Object a){
                      System.out.println("happy");
           }
  }

  When the compilation is finished, I started to write the main method and in my main method when I declare

  Person a=new Person()

  the compiler generates a warning saying that the Person class is a type of crude. arguments must be provided to the type parameters. So when there is no generic drugs in the class file, how the compiler identifies that the person is a generic class and arguments must be provided to the type parameters.

  Myriam wrote:
  Now, there is a basic doubt. so far, I thought that the byte-code and the class file is the same. I mean the class file contains the byte-code which is the reason class file runs on all platforms. I also google to know the difference between byte-code and class file but I couldn't find anything. Class file is different from byte-code. If yes what is the class file and what is byte code?

  The class file contains the byte-code indeed - other elements of prudent information to the virtual machine to actually load and interpret the class file.

  http://docs.Oracle.com/javase/specs/JVMs/SE5.0/HTML/ClassFile.doc.html

  You should do a basic study in binary data formats to understand the functioning of applications with those. Generally, you need additional information, which is usually stored in the top of the file (the "header"), to know how to load and interpret the binary data in the file. These header information could contain generic details for example.

  Take a picture as another simple example file: its impossible to properly load the image data if you don't know at least how wide and height of the image is, how many bytes a single pixel takes upward, etc., then you can just dump the binary image of the file data, you must also store the additional header information.

• Before that I only had to type "IMDb" and press enter and put me to the site immediately, but now all these links come first. What can I do to make it like it was before? And my Norton safe password does not appear in firefox.

  Before that I only had to type "IMDb" and press enter and put me to the site immediately, but now all these links come first.

  Or I used to type 'youtube' and after knocking entered, I was took directly to the homepage of youtube.

  What can I do to make it like it was before, so it takes me directly to the site? Second, my Norton passwords and user names for all sites that have been stored in my 'Norton safe"does not appear in the browser. This will be available soon?

  Try to define your topic: config entries for:

  • Keyword.Enabled - > true
  • keyword. URL->http://www.google.com/search?ie=UTF-8 & sourceid = navclient & gfns = 1 & q =
  • Browser.Fixup.Alternate.Enabled-> true
  • Browser.Fixup.Alternate.prefix-> www.
  • Browser.Fixup.Alternate.suffix-> .com

  and then restart your browser and try again supernatural imdb.

  You must use 'supernatural imdb' rather than "supernatural imdb" because you want the domain before the page for research work best.

• Satellite C855 - 2 EV - some letters do not appear when I type fast and blind

  Hi all

  I bought this Satellite C855 - 2 EV only 2 days, but I've met a few keyboard problems.
  I type blind and fast all the time, so when I noticed that whenever I type fast, a few letters only do not appear on the screen once I pressed the keys.
  Especially the SPACEBAR.

  I can only type correctly if I do it slowly and if I have pressure on each unique key. I don't want to type like this because I want to save time and just type blind and fast, I also do not want to cause more damage to the keyboard or laptop.

  Can someone help me please?
  I don't want to consider the store just because of all the hassles I have to cross.

  Thanks in advance

  I know it may seem silly now, but I think that the only solution for you is to type a little more slowly and correctly. With correctly I mean that every single button should be enabled to give a correct contact.
  Similar thing happens on my older P500. When I type faster I make so many mistakes on my word document. Some letters are missing and occasionally does not work SPACEBAR. I tap it correctly. In my view, the key, but there is no contact.

  Sorry, but I don't think you can do something about it.

• WSN MAX, J-type thermocouple and serach time node issues

  Hi dear all,

  I use the WSN starter kit, I am able to work well on it, but have some problems and you smart guys do look in those.

  1. once I installed 1.2 WSN software module poineer, I am unable to see Remote System tab in the tree of MAX, only my system tab is displayed. Even if I am able to see in my lvproject, to develop and use the application successfully.

  2. the J type thermocouple which came once I set TC0 + and TC - of the WSN - 212 node according to documentations, then in Labview VI, I see in the temperature value 273.56 ambiguous as - values and change them to-244.67 as once that I touch at its end. My node is set by default to the range of temp type J and Celcius, click right property tab.

  3 How long the knots will search gateway once its out of the range of gateway or I power off of the entry door? I experienced his seraches led for about 1 min then sleeps for 1 min at the start and then sleep time increases. I did this for 3-4 hours but after that 7-8 hours I couldn't see any LED flash for the search of the entry door. I needed to push button on the node, and then I start seraching.

  Kindly help me on these issues. More will come once I have will probe deeper into the system.

  Thank you & best regards

  Zdzislaw qureshi

  + 923005178180

  
  

• Attachments of any file type flashes and disappear when you try to open.

  Attachments of any file type flashes and disappear when you try to open.  Downloads act like they work, but do not.  No file is on the hard drive with run or save.  Used email is yahoo and hotmail.  This is my mother's computer and I have no idea where to start.  Guessing that it is a security problem, I thought I'd start by turning off security.  Update of AVG 9 last week, but it would be the only change we know offshore.  Any sugguestions?

  Reinstalled AVG 9 until I read your answer with the removal tool.  All is well now!  Ran some scans.

• Vista will not display description of the file on mouse over. File name, Type, size, and Date modified see the upward, but no description.

  Vista will not display description of the file on mouse over. When I mouse over, a pop-up window displays showing: file name, Type, size and Date of change, however, it does not show the description of the file.

  So, for example if I have 5 files on different types of screw - the description tells me that the size of the screws. IE. 1.5 mm or 1. 8 mm.

  Update: try to get the description of the file displayed messing around in the file properties, now out of 10 records, only 2 includes the name of the file in the mice on the pop-up window. So now what lack us, it's the file name and the Description file.
  Help, please...

  Description of the file in as long as this is not one of the available variables, which can be shown with ToolTips - but there are others who could easily serve the same purpose. Here are the options:

  Consulted
  Attributes
  Created
  DocAuthor
  DocComments
  DocSubject
  DocTitle
  Modified
  Name
  Size
  Type
  To write

  Here is an article on how to change what is shown. http://www.ghacks.net/2008/02/10/customize-windows-explorer-tooltips/ . It is to change the registry, make sure you so first back it up before doing anything so that you can recover in case you make a mistake (or do the right thing, but it does not work as expected). http://www.instant-registry-fixes.org/how-to-backup-windows-vista-registry/ .

  I hope this helps.

  Good luck! Lorien - MCSA/MCSE/network + / A +.

• Shares of pay - link between the type "Run" and type "Magentic report."

  Hello
  
  I have an obligation to change payroll online and add new fields inside for GB legislation (R12.1.3).
  In this particular VO, I have payroll_action_id of information for the archiving process.
  
  In PAY_PAYROLL_ACTIONS_V, I can see a record of type 'Run' and type 'magnetic report '.
  I have the payroll_action_id of type 'magnetic report '.
  Please let me know how can I associate the type of 'Magnetic report' and type 'Run' associated with this payroll run?
  
  Thank you!

  I'm not sure the legislation of GB, but generally the magnetic transfer is executed after the process of advance payments. This will generate an output file from the Bank in a secure directory and you can use it to treat bank transfers for your employees.
  The payroll_action_id is concerned, you should find this information in the pay_action_interlocks table.

• Comparison between a static value type String and a type perhaps unrelated number

  Well I have another question of my book of text... so far I typed in exactly how they ask me to and even followed some screenshots of examples of theres. All me looks good, but of course, I'm the only one with an untrained eye.

  When I run this film I get a compiler error of: 1176 20 comparison between a static value type String and a type perhaps unrelated to line number

  Here is my code

  import flash.events.MouseEvent;

  Stop();
  var numberOfCookies:Number = 0;
  startBtn.addEventListener (MouseEvent.CLICK, getCookies);
  function getCookies(event:MouseEvent)
  {
  numberOfCookies = (Math.floor (Math.random () * (10)) + 1);
  var n: Number = 0;
  While (n < numberOfCookies)
  {
  var cookieInstance:cookieMC = new cookieMC;
  addChild (cookieInstance) .x = (Math.random () * 200) + 20, (cookieInstance) there (Math.random () * 150) = + 220;
  n ++ ;
  }
  }
  goBtn.addEventListener (MouseEvent.CLICK, checkNumberTyped);
  function checkNumberTyped(event:MouseEvent)
  {
  If (checkBox.text == numberOfCookies) //this is the line 20
  {
  gotoAndPlay (2);
  }
  on the other
  {
  gotoAndPlay (3);
  }
  }

  The error indicates well enough the problem... the compiler doesn't like to compare different types of things.  In your case, a type is a string, and the other type is a number.  If you need to force one of them to become another type, and you can go either way...

  If (checkBox.text is String (numberOfCookies))

  OR

  If ((checkBox.text) Number is numberOfCookies)

• Create a join between a column of type DATE and DATETIME RPD

  Hello

  In my DR. I have a fact table with a DATE column, which also contains a component "hour". The physical layer shows this as a DATETIME column that to this DAY, I've changed since I'm only interested in the part of the date.

  When I join it an alias of my Date dimension, the generated sql physics is similar to:

  DIM_DATE. DATE = FACT_A.FINISH_DATE

  What I really want is:

  DIM_DATE. DATE = TRUNC (FACT_A.FINISH_DATE)

  
  

  How can I achieve this at the level of the RPD? Yes, I can add a new column to the table of DW with truncated value, but I want to know why even though I chose the DATE as the type of data to the RPD, the created join does not have a trunk.

  
  

  Thank you

  
  

  Manish
  

  The physical layer shows this as a DATETIME column that to DATE, I have changed since I was only interested in the part of date.

  N ° bad idea. The physical layer of the RPD should show what the physical source. So if it isn't a DATE, don't pretend OBIEE is it. For the exact reason that you now - tap you are pregnant OBIEE to write some SQL magic to cast the data type, without even say things which is the original type. OBIEE will not interrogate the metadata in order to check the data types in the source, it will rely on what you tell it in the physical layer.

  How can I achieve this at the level of the RPD?

  You could use an inline view in the physical layer and make your trunc here I guess. Better, as you've already identified, is to store the date as a date if this is going to be a key column to reach.

  I want to know why even though I chose the DATE as the type of data to the RPD, the created join is not a trunk.

  See above. OBIEE does not know it is a DATETIME value, then why would he do a TRUNK?

• Can we use type multiset and with the clause the two

  Please let me know how to use the multiset type and with the clause.

  You need more inlining, as for example in:

  SQL> select *
  from table (cast (multiset (select *
                              from (with t as (select deptno from dept)
                                    select * from t)) as sys.dbms_debug_vc2coll))
  /
  COLUMN_VALUE
  ----------------------------------------
  10
  20
  30
  40
  50                                      
  
  5 rows selected.
  

• I always saved emails to customer files but I noticed recently that the email is saved as a Type 15 and I can't open it.

  In the past when I saved an email in a client file the icon looked like Thunderbird and everything was fine. Now, I save an email and it looks like a fuzzy little Thunderbird in a box. When I try to open it, a new screen opens to compose an email and registered e-mail is attached to it. If I try to open the attachment like doc thunderbird, it shows all orders, 50 lines of alphabet... and somewhere in the middle of them is my message. It's frustrating.
  My save of the types of options are: main files, HTML files, text files or all files. I tried to save all, and nothing works.
  Any suggestions?
  Thank you.

  Hi toads.
  Yes. It worked for me. I didn't know that I had to manually add ".eml" at the end of the subject line after that I have insert the date. I've never done this before.
  My procedure is:
  right click, save as "mail file".
  Add the date and file name extension, by default, the line object (object repairs.5.7.15.eml) and WooHoo! Fact!
  Thank you so mucy!

• Satellite A50: Question about type RAM and HARD drive

  Anyone out there who would try to open their laptop Toshiba Satellite A50, what type of RAM and hard disk of brand you all have inside?
  All the portable toshiba comes with Toshiba RAM and hard drive?

  Hello

  As far as I know the Satellite A50 uses DDR PC2700 modules. These modules must be compatible:
  PC2700 256 MB (PA3311U - 1 M 25)
  PC2700 512 MB (PA3312U - 1 M 51)
  1024MO PC2700 (PA3313U-1M1G)

  There are different models of Satellite A50, but I think that there should be a drive HARD IDE(ATA-6) 60 GB 4200 RPM with 8 MB buffer size.

  Here is all the information I found.

• type definition and reference

  Hello

  When I look at the 'Use' in the opinion of Types column, I am fair to assume that the first location given for a type whose type is defined, all the others where it is referenced?

  Example:

  Use of Version of Type name

  OMS_StdQueueInput container, Type definition 0.0.0.4 OMS_Types.ini; OMS_LocalTypes.ini; OMSStart.seq no comment

  So here I guess, the type OMS_StdQueueInput is defined in OMS_Types.ini and used/referenced in OMS_LocalTypes.ini and OMSStart.seq. Is this correct?

  Kind regards

  Peter

  INI file do you mean a Palette Type TestStand file?

  A new feature has been added to TestStand (4.1, I think that Yes do it) which allows control of automatic conflict resolution cases (choose the most recent version of a type in silence). The setting is located under the tab file from the dialog box Options of Station and is called "allow automatic Type Conflict Resolution." In general, I recommend to change for a bit more restrictive setting 'Only if a Type Palette File a higher Version' because that will get rid of the possibility of automatic fix of conflict at the opening of two files in sequence with different versions of a type when the type does not exist in a file of type palette. But if your type will always be in a file of pallet type then the default is fine.

  First of all, some basic information.

  Type automatic conflict resolution - this occurs when a file is opened, whose type is different from the version already loaded into memory, and the auto resolution criteria is met (i.e. the station allows it, or verison of the type is marked as modified, and versions of the type as the different version numbers). In case of automatic fix TestStand automatically selects the version of the type with the higher version number.

  I would like to know if you want to explain otherwise.

  What I recommend for the management of the types:

  (1) create a palette file type for your standard types. Make sure all efforts and development systems are using the / load this file type of pallet. If you need more information on how to do it please let us know.

  (2) control updates to these types by using a source code control system to control the update of the files palette type. Ideally, one person should be modifying a palette file type at a time. Source code control systems can be used to enforce this.

  (3) let your developers know that they must only edit types in the type palette files and not in the files of each sequence.

  (4) try to make any changes to your types and substep code backward compatible so that the old sequences will continue to work with newer versions of the types. If you break backward compatibility, consider instead to create a new type and use the new type in the future, but the old guy to let backwards compatibility (you can use flags to hide the old version of the types in the Insert menu, if necessary).

  If you are using a palette file type in this way, I think you'll get something close to what you're asking. The default setting for "allow automatic Type Conflict Resolution ', if all your systems of TestStand charge your standard type palette files then you will get the version in the type palette file or your will get a dialogue of the type of conflict if the version in the movie file is more recent. There will be no possibility of silently using one version other than the one in the type palette file. Is it enough for your needs, or you are looking for something different. If you are looking for something different, please let us know the specific behavior that you need.

  Hope this helps,

  -Doug