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• Quick to develop web app in Java

  - by Mike Q

  Hi all, I need to develop a basic web app very quickly (1 week) for a demo. My requirements are Java (I need to make use of existing Java libraries to access the relevant data) 2 screens One for static data view, maybe some search parameters Other for basic form entry No fancy AJAX required Ideally easy for a web designer to come in and tart it up as necessary, without having to rewrite everything My first stop was going to be to checkout Wicket as I've heard good things about it. I don't have the time right now to dive into anything heavy, which probably writes off JSF in my mind (I played with JSF1, steep learning curve which I've now slid back down). I'm happy to treat the result as throwaway so if there's a framework which starts of well but then doesn't scale up to bigger projects, that would be ok. Any suggestions appreciated on frameworks/approach.

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• Diff applications going crazy if the functions in the file were reordered

  - by VitalyB

  I've been busy refactoring a file in our project and as part of my changes I reordered the function to a more logical way. However, now when I'm trying to review my changes I get a mess: The diff applications has no idea that the functions were merely reordered and marks 80% of the file content as changed. I've tried to see the diff with both "Beyond Compare" and "WinMerge" to the same result. Is there some setting that might help me here? As tagged, I am using C# on Windows.

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• Cast object as OleVariant in Delphi

  - by Alan Clark

  Is there a way to pass a wrap and unwrap a TObject descendent in an OleVariant? I am trying to pass a TObject across automation objects. I know it's not a good idea but I don't have a good alternative. Something like this: function GetMyObjAsVariant; var MyObj: TMyObj; begin MyObj := TMyObj.Create; result := OleVariant(MyObj); end; Which would be used by a client as var MyObj: TMyObj; begin MyObj := GetMyObjAsVariant as TMyObj; end; This fails to compile, returning E2015 Operator not applicable to this operand type.

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• QR Factorization Discrepancy

  - by KyleSum

  I'm trying to get a feel for the Intel MKL library with a simple back-solve (A*x = b) using a QR factorization and comparing my MKL answer to the answer of a known working solution. When my answers didn't come up correct I printed a diff between the Q and R matrices of the known working and the MKL test code. I know MKL/lapack uses "elementary reflectors" to store the values of both the Q and R matrices. So, I'm wondering if these differences (mostly +/-) are by design or the result of some bug. I'm using DGEQRF, DORMQR, and DTRSM routines to solve the system and DORGQR (for debugging) to get the Q matrix shown in the diff. diff with 6x6 matrix (top known, bottom mkl): http://pastebin.com/4uwcME0J

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• Win32_PageFileUsage WMI call returning 0 for CurrentUsage

  - by Ryan Duffield

  I am querying for the current page file usage on Windows-based systems. This is meant to run on the .NET Framework, version 2.0 SP1 and has been tested (and works!) on Windows Vista, Windows 7, Windows Server 2003 R2 and Windows Server 2008. On Windows Server 2003 SP2 (original release, not R2) it appears to return 0: using (var query = new ManagementObjectSearcher("SELECT CurrentUsage FROM Win32_PageFileUsage")) { foreach (ManagementBaseObject obj in query.Get()) { uint used = (uint)obj.GetPropertyValue("CurrentUsage"); return used; } } This is simply returning the results from the first row returned for the WMI call. Even when a page file is being used, it returns 0. What causes the result to be 0 when it should be returning a larger value? It may be something specific to the machine in question, and could have nothing to do with the operating system version. I've also tried this with and without elevated privileges with the same results.

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• jQuery Loading Status for $.ajax

  - by Geetha

  Hi All, I am using the following code to get data from the database( from cs page itself i am creating the html code) and binding the html code to the div. Problem: If the database size is higher it takes some time to show the result. thet time i want to shoe a loading.gif image in that location. Once it get the data i have to hide the load image. Code: $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", data: "{ searchText: '" + searchText + "', product: '" + product + "', category: '" + category + "', artist:'" + artist + "'}", url: "Search.aspx/FetchSearchResult", dataType: "json", success: function(data) { $("#searchContainer").html(data.d[0]);}}); Geetha.

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• How to create array items by specify a key that includes hierachy ?

  - by Relax

  Given original codes as: foreach($option as $name=>$value) $array[$name] = $value; and $name as button[0][text], button[0][value], button[1][text], spider[0][name], ... The result array would be array('button[0][text]' => 'its text', 'button[0][value]' => 'its value', 'button[1][text]' => 'its text', 'spider[0][name]' => 'its name', ) However, what i want is array('button' => array( array('text'=>'its text', 'value'=>'its value'), // this is $array[button][0] array('text'=>'its text') // this is $array[button][1] ), 'spider' => array( array('name'=>'its name') // this is $array[spider][0] ) ) How could i do this? ...

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• MySQL ORDER BY returns things in (apparently) random order !?

  - by Luke H

  The following query: SELECT DISTINCT ClassName FROM SiteTree ORDER BY ClassName is returning things in no apparent order! I get the same result whether I quote column/table names, or use DISTINCT or not, or add ASC or DESC. I assumed the indexes might be broken, or something like this, so tried dropping and recreating. Also tried REPAIR TABLE and CHECK TABLE. The table collation is set to latin1_swedish_ci. All the textual columns are set to use UTF-8 and collation is set to utf8_general_ci What could be causing this?

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• How to change "area" of a control in DesignMode?

  - by Tronex

  When I drag and drop a TextBox from the toolbox onto a WinForm, I can drag it around on the form as I like. Now I create a new class and inherit it from TextBox. I add a new property called CaptionLabel. When set to a value, I dynamically create a Label control, set its value and finally add the label to the TextBox' parent controlcollection. The result is a "LabeledTextBox". However, when selecting the TextBox, I still only get the TextBox selected... the selection rectangle does not include the Label, created dynamically. How do I extend the rectangle so that it also contains the Label and make the label "know" that it belongs to the TextBox? Or is there a better way to create labeled controls?

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• MySql returning multiple rows from stored procedure / function

  - by pistacchio

  Hi, I need to make a stored procedure or function that returns a set of rows. I've noted that in a stored procedure i can SELECT * FROM table with success. If i fetch rows in a loop and SELECT something, something_other FROM table once per loop execution, I only get one single result. What I need to do is looping, doing some calculations and returning a rowset. What's the best way to do this? A temporary table? Stored functions? Any help appreciated.

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• C struct print, decode this code?

  - by pauliwago

  I am in the process of studying for a test, and I'm trying to work through some practice problems. I've been working on this a while now..but can't figure it out. Please take a look at the code fragment: union { int i; short x; unsigned short u; float f; } testout; testout.i=0xC0208000; Before I ask the question, can someone please explain to me how the above code works?? My guess is that testout.i=0xC0208000 puts either an int, short, unsigned short, or float and puts the result in that address. (?) The question is what prints out if we write printf("%d", testout.x)? I know we should expect digits....but I have no idea where they are getting the digits from....there is no output. Any explanation would be greatly appreciated. Thanks!

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• Java Instance of: Supertypes and Subtypes seem to be equal? How to test exactly for Type?

  - by jens

  I need to test, if an instance is exactly of a given type. But it seems that instanceof returns true also if the subtype is tested for the supertype (case 3). I never knew this before and I am quite surprised. Am I doing something wrong here? How do I exactly test for a given type? //.. class DataSourceEmailAttachment extends EmailAttachment //... EmailAttachment emailAttachment = new EmailAttachment(); DataSourceEmailAttachment emailAttachmentDS = new DataSourceEmailAttachment(); if (emailAttachment instanceof EmailAttachment){ System.out.println(" 1"); } if (emailAttachment instanceof DataSourceEmailAttachment){ System.out.println(" 2"); } if (emailAttachmentDS instanceof EmailAttachment){ System.out.println(" 3 "); } if (emailAttachmentDS instanceof DataSourceEmailAttachment){ System.out.println(" 4"); } RESULT: 1 3 4 I want to avoid case 3, I only want "exact matches" (case 1 and 4) how do I test for them?

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• CSS navigation submenu and seperator

  - by Xenioz

  I have created a navigation bar that is centered with CSS which works. Each li item is separated with a border which is a background image. When hovering on the nav items, the separator disappears because the hover changes the background (I guess) but I wonder how I can fix this, padding or margin can't work because it will just shift the li element. Second problem is that the sub menu items aren't displaying correctly and I have no idea why... Demonstration: http://jsfiddle.net/Xenios/tfbhh/9/embedded/result/ The code: http://jsfiddle.net/Xenios/tfbhh/9/ I'm trying to get this to work for almost a week, and I'm quite tired of it, so I'm looking here for support.

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• interesting vba/access question: color rectangles according to data

  - by every_answer_gets_a_point

  i have a datasheet that looks like this: ID name_ 1 2 3 4 1 name1 x 0 0 0 2 name2 0 x 0 0 3 name3 0 0 x 0 4 name4 0 0 0 x i have rectangles on a report that correspond to this datasheet. when the report opens, i need the rectangles to be colored RED according to the data. for example where name1 and there is an x in the 1 column, i need the specific rectangle corresponding to this (name1, 1) to be colored red. here is the result that i will need: x x x x (where x is a rectangle that is RED) perhaps the best place to place this code would be in ON LOAD event of the report, but i am not sure exactly. can you please suggest to me some code that would turn the specified rectangles RED according to the data?

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• How to get out information from a DataGridView?

  - by ghost_j1

  I am working on program that calculate the GPAs for university students in C#. I have made a gridview that contains columns for each subject. Its mark as letter and number. After the user "student" insert his/her subject I want to let the user click a button that will get the mark and the number of the credit hours of each subject. Calculate the GPA for the student and put the result in a textbox. I am having trouble getting started. Any advice for a good place to start?

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• Why is selecting specified columns, and all, wrong in Oracle SQL?

  - by TomatoSandwich

  Say I have a select statement that goes.. select * from animals That gives a a query result of all the columns in the table. Now, if the 42nd column of the table animals is is_parent, and I want to return that in my results, just after gender, so I can see it more easily. But I also want all the other columns. select is_parent, * from animals This returns ORA-00936: missing expression. The same statement will work fine in Sybase, and I know that you need to add a table alias to the animals table to get it to work ( select is_parent, a.* from animals ani), but why must Oracle need a table alias to be able to work out the select?

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• a question related to Google Translate

  - by Robert

  Hi all, it works perfectly fine if I paste the following URL directly into my IE address bar: http://translate.google.cn/translate?hl=zh-CN&sl=zh-CN&tl=en&u=http%3A%2F%2Fnews.baidu.com%2Fns%3Fword%3D%25B0%25C2%25B0%25CD%25C2%25ED it will translate some Chinese news pages into English ones. but if I call this address in a Java program like: Process q=Runtime.getRuntime().exec("cmd /c start http://translate.google.cn/translate?hl=zh-CN&sl=zh-CN&tl=en&u=http%3A%2F%2Fnews.baidu.com%2Fns%3Fword%3D%25B0%25C2%25B0%25CD%25C2%25ED"); It will only return to the Google translate main page. Wonder what went wrong there. and it would be great if you help me how to realize this(opening the Google translated result page simplying by supplying the URL,in a Java program). Many thanks.

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• How to get last 12 digits from a string in MySQL?

  - by Nick Gorbikoff

  Hello. How would I get last 12 digits of a string using mysql? Let's say I have a varchar field with a tracking number, that may be anywhere from 5 to 20 varchars long. But I only need to select last 12 digits or less if there are less. so in a field = 12345678123456789012 I would only need to get what's in brackets field = 12345678[123456789012] I saw a few examples using mid, etc, but they dont' produce the desired result or I can't find an example that makes sense :-( Thank you.

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• Eclipse RCP: How to troubleshoot plugin dependencies & classpath problems?

  - by paul

  I am working on an RCP project based on eclipse. It has been working fine but recently I thought I'd upgrade it to use a new eclipse version (3.2 - 3.5). After a bit of trouble, it seemed to be working fine. Then I did something. Don't know what. The end result is that I'm getting a classpath error when one of my plugins (A) tries to access a class in one of the dependent plugins (B) (also one of mine). As far as I can see, Plugin A has Plugin B in its' dependency list and the compiler shows no errors. To test, I created a new Plugin C with one class and accessed the class from Plugin A. That works fine. Does anyone have any hints for troubleshooting such issues? A checklist of settings to check? I've been stuggling with this for hours and getting nowhere! Particularly frustrating as it was working until I changed something! Thanks

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• get n records at a time from a temporary table

  - by Claudiu

  I have a temporary table with about 1 million entries. The temporary table stores the result of a larger query. I want to process these records 1000 at a time, for example. What's the best way to set up queries such that I get the first 1000 rows, then the next 1000, etc.? They are not inherently ordered, but the temporary table just has one column with an ID, so I can order it if necessary. I was thinking of creating an extra column with the temporary table to number all the rows, something like: CREATE TEMP TABLE tmptmp AS SELECT ##autonumber somehow##, id FROM .... --complicated query then I can do: SELECT * FROM tmptmp WHERE autonumber>=0 AND autonumber < 1000 etc... how would I actually accomplish this? Or is there a better way? I'm using Python and PostgreSQL.

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• How can I get jquery .val() AFTER keypress event?

  - by werner5471

  I got: $(someTextInputField).keypress(function() { alert($(this).val()); }); Now the alert always returns the value BEFORE the keypress (e.g. the field is empty, I type 'a' and the alert gives me ''. Then I type 'b' and the alert gives me 'a'...). But I want the value AFTER the keypress - how can I do that? Background: I'd like to enable a button as soon as the text field contains at least one character. So I run this test on every keypress event, but using the returned val() the result is always one step behind. Using the change() event is not an option for me because then the button is disabled until you leave the text box. If there's a better way to do that, I'm glad to hear it!

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• How can I use the fucntion CoGetClassObject in x64

  - by fishbein

  I have COM DLL that compiled in x32(the server side). I registered it and tried to use the function CoGetClassObject with client that works in x32 for getting the IClassFactory. Hr = CoGetClassObject(CLSID_IOrbCom, CLSCTX_INPROC_SERVER, 0 , IDD_IClassFactory, (LPVOID*)&ClassFactory) the result with client x32 was fine and everything works well. But when I tried to use the CoGetClassObject in x64 client I received failed error "Class not registered". P.S. Restriction: - I can only compiled the COM server with x32. - My OS is XP 64bit.

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• ClickOnce File will not associate on open from web browser download

  - by mstrickland

  I have a ClickOnce program that associates with a given extension and that works fine if the file is located on the file system. My problem comes in when this file is downloaded from a website. I have a web handler that prompts the user to Click to download the file. Upon clicking the link the user is presenter with an Open or Save Dialog. If the user chooses Open the program will not launch. If the user saves the file to their hard drive and then clicks the file the association will work. Any advice on getting the association to work on the prompt when the user clicks Open or is a Save required? -Edit : Tested this on both IE8 and Chrome with same result.

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• Sort a list numerically in Python

  - by Matthew

  So I have this list, we'll call it listA. I'm trying to get the [3] item in each list e.g. ['5.01','5.88','2.10','9.45','17.58','2.76'] in sorted order. So the end result would start the entire list over again with Santa at the top. Does that make any sense? [['John Doe', u'25.78', u'20.77', '5.01'], ['Jane Doe', u'21.08', u'15.20', '5.88'], ['James Bond', u'20.57', u'18.47', '2.10'], ['Michael Jordan', u'28.50', u'19.05', '9.45'], ['Santa', u'31.13', u'13.55', '17.58'], ['Easter Bunny', u'17.20', u'14.44', '2.76']]

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• find all occurrences of comparison with == in visual studio

  - by Emiswelt

  Hi there I made the mistake of using == for comparing IP addresses instead of using the equals() method of the IPAddress class in C#, which will result in the comparison of references instead of values. Since the solution I am currently working on is very large for a one-man project ( 100.000 lines of source code), I am very sure that I still have some of these wrong statements in my code. Is there any possibility to tell Visual Studio to find all occurrences of == operations on a specific class for me, so that I can find and clean up the bugged comparisons? with best regards, emi

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