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• What lessons can you learn from software maintanence?

  - by Vasil Remeniuk

  Hello everyone, In the perfect world, all the software developers would work with the cutting edge technologies, creating systems from the scratch. In the real life, almost all of us have to maintain software from time to time (unlucky ones do it on a regular basis). Personally I first 2 years of my career was fixing bugs in the company that no longer exists (it has been taken up by Oracle). And probably the biggest lesson I've learned that time - despite of the pressure, always try to get as much information about the domain as possible (even if it's irrelevant to fixing a specific bug or adding a feature) - abstract domain knowledge doesn't lose value as fast as knowledge about trendy frameworks or methodologies. What lessons have you learned from maintenance?

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• How to 'hide' spurious "declared but never used" warnings?

  - by Roddy

  I'm using the C++Builder compiler which has a minor bug that certain static const items from system header files can cause spurious "xyzzy is declared but never used" warnings. I'm trying to get my code 100% warning free, so want a way of masking these particular warnings (note - but not by simply turning off the warning!) Also, I can't modify the header files. I need a way of 'faking' the use of the items, preferably without even knowing their type. As an example, adding this function to my .cpp modules fixes warnings for these four items, but it seems a bit 'ad-hoc'. Is there a better and preferably self-documenting way of doing this? static int fakeUse() { return OneHour + OneMinute + OneSecond + OneMillisecond; }

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• SQL Server Reporting Services 2008: How to set the credentials property properly?

  - by wgpubs

  No matter how I configure the Credentials property I get a 401 exception when I try to Render the report. Here is my (latest) code: var rs = new ReportExecutionService(); rs.Url = "https://myserver/reportserver/reportexecution2005.asmx"; var myCache = new System.Net.CredentialCache(); myCache.Add(new Uri(rs.Url), "kerberos" , new System.Net.NetworkCredential("username", "password", "Domain")); rs.Credentials = myCache; The URL and credentials are all correct. But still getting a 401 when I cal rs.Render(...). The Reporting Services install is sitting on a Windows Server 2008 box and requires integrated authentication. Thanks

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• Tabcontainer in Master Page not working as expected

  - by henrico

  Isn't TABCONTAINER supposed to be used in a MASTERPAGE? I started building my application in a single .aspx page with a tabcontainer to separate the different features in the application. My idea was to later break it up into individual pages with less code in each of them. I thought the use of a masterpage would be the perfect solutions... of course, this didn't work as expected. The problem is that all tabs, except the one related to the page loaded, for example tab1.aspx, are empty. If tab2.aspx is loaded, only tab2 is filled and so on. Is this a known bug or by design?

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• Trying to verify understanding of Foreign Keys MSSQL

  - by msarchet

  So I'm working on just a learning project to expose myself to doing some things I do not get to do at work. I'm just making a simple bug and case tracking app (I know there are a million this is just to work with some tools I don't get to). So I was designing my database and realized I've never actually used Foreign Keys before in any of my projects, I've used them before but never actually setting up a column as a FK. So I've designed my database as follows, which I think is close to correct (at least for the initial layout). However When I try to add the FK's to the linking Tables I get an error saying, "The tables present in the relationship must have the same number of columns". I'm doing this by in SQLSMS by going to the Keys 'folder' and adding a FK. Is there something that I am doing wrong here, I don't understand why the tables would have to have the same number of columns for me to add a FK relationship between the tables?

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• UISwitch text not showing on device

  - by iFloh

  Hi, I have a screen with several UISwitch controls. On my iPhone simulator this screen works correctly and The Switch text shows as On/Off. Different on my testing device (iPod Touch). Here the text seems to get lost and I only get "1" (instead of "On") and "0" (instead of "Off"). I don't know where the iPod Touch is different and why it's not showing correctly. Anyone had a similar experience? Is this a bug? Cheers

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• insane transformations of a view

  - by Mike

  I have this view and I do some rotation transformation to it using something like myView.transform = CGAffineTransformMakeRotation(degreesToRadian(90)); //The view was originally at angle 0. at some other point of my code, I would like to scale the view animating it, so I do [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1.0]; myViews.transform = CGAffineTransformMakeScale(2.0f, 2.0f); [UIView commitAnimations]; but when I do that the animation is performed as the view is at 0 degrees, ignoring the previous transformation. It simply assumes as the view is yet at zero degrees, so, this animation scales the view and rotates it back to 0 degrees (!!!!?????) Is this some bug or am I missing something? thanks.

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• ssrs 2008 programmatically add tables rows

  - by davethecoder

  Above is how my report looks, the part in yellow in hidden, and is only shown when the user clicks the + icon on the [name]. the result is basically the percentage difference from the Past [X] - [TERM] i.e there is a dropdown with, [weeks, months, days, hours] and a textbox of qty. so choosing qty = 4 and term = weeks will delivery a result set spread over 4 weeks based on the parent result sets date range and name ID I wish to populate here the number of rows, dependant on the value set by the user and the data will be from a dataset. Is it possible to dynamically add more sub rows ( like on row data bound ) if my first row is ID 123 [name], is it possible to send this value [123] to a dataset in order that all subrows are only relevant to the name with ID of 123? this is my first bash at SSRS so please no half cut answers, that just lead to more questions about the answer given :-) if this makes sense. Thanks

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• SSRS Column Grouping with specific order

  - by AmiT

  Hi Experts, Is it possible to change order of records/groups in a result-set from a query using Group By? =I have a query: SELECT Category, Subcategory, ProductName, CreatedDate, Sales From TableCategory tc INNER JOIN TableSubCategory ts ON tc.col1 = ts.col2 INNER JOIN TableProductName tp ON ts.col2 = tp.col3 Group By Category, SubCategory, ProductName, CreatedDate, Sales = Now, I am creating a ssrs report where Category is Primary row group, then SubCategory is its child row group. Then ProductName is a Primary Column Group. It works perfect, But it shows the ProductNames in alphabatic order. I want it to show the ProductNames in custom order(defined by me).Like, ProductNo5 in 3rd column, ProductNo8 in 4th column, ProductNo1 in 5th column ... and so on!

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• Watir changes highline's "ask" method

  - by grundic

  Hello! I've encoutered some strange functionality, when using Watir and Highline together. Here is simple example: require 'highline/import' comp = ask("Company? ") { |q| q.default = "MySuperCompany" } puts comp require 'watir' comp = ask("Company? ") { |q| q.default = "MySuperCompany" } puts comp Here is an output: Company? |MySuperCompany| MySuperCompany [Company? ] => Company? Maybe it's a bug? I've also found in documentation for highline, that If @question is set before ask() is called, parameters are ignored and that object (must be a HighLine::Question) is used to drive the process instead. Sorry, I'm not a ruby guru :-(

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• ChoiceFormat.setChoices confusion about format parameter type and documentation

  - by polygenelubricants

  From the java.text.ChoiceFormat API: setChoices(double[] limits, String[] formats): Set the choices to be used in formatting. Parameters: limits - contains [...] formats - are the formats you want to use for each limit. They can be either Format objects or Strings. When formatting with object Y, if the object is a NumberFormat, then ((NumberFormat) Y).format(X) is called. Otherwise Y.toString() is called. I'm having difficulties understanding the documentation for the formats parameter: how can you possibly pass a Format/NumberFormat object to setChoices if it's declared String[] formats? Note that interestingly, the getters counterpart of setChoices are declared as follows: double[] getLimits() Object[] getFormats() -- not String[]!!! Is this a bug in the API? Should the setter have been declared setChoices(double[], Object[]) instead, or am I not understanding how to use setChoices correctly?

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• Shell Script- each unique user

  - by Dinis Monteiro

  Hi guys I need "for each unique user, report which group they are a member of and when they last logged in" so i have: #!/bin/sh echo "Your initial login:" who | cut -d' ' -f1 | sort | uniq echo "Now is logged:" whoami echo "Group ID:" id -G $whoami case $1 in "-l") last -Fn 10 | tr -s " " ;; *) last -Fn 10 | tr -s " " | egrep -v '(^reboot)|(^$)|(^wtmp a)|(^ftp)' | cut -d" " -f1,5,7 | sort -uM | uniq -c esac My question is: how i can show the each unique user? the script above only show the more recent user logged in the system, but i need all unique users. anyone can help? thanks

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• Memory leak till crash due to HttpRequest

  - by Alex R.

  I played with HttpRequest and realized that the memory is not cleaned up after any request. After some time the running tab within Chrome will crash. Here is some testing code. Put a large sized file into the 'www' directory and set the URL in the code accordingly. import 'dart:async'; import 'dart:html'; void main() { const PATH = "http://127.0.0.1:3030/PATH_TO_FILE"; new Timer.periodic(new Duration(seconds:10), (Timer it)=>getString(PATH)); } void getString( String url){ HttpRequest.getString(url).then((String data){ }); } Is this really a bug or did I something wrong?

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• How to take a percentage of a Credit Card transaction?

  - by abszero

  Essentially what I am trying to do is setup a work flow similar to PayPal. I have created an application that allows my clients to accept online donations and what I want to do is take % percent of that transaction off the top. The problems I have run into are: Authroize does not allow me to take on an additional fee that is paid out to my account I could run a report every month on all my clients transactions to determine what they owe but this is less than ideal All of the companies I looked at do not allow for aggregation where by all of the donation systems pay into my account then I remit payment to my clients Does anyone know of a company that allows for this or is my only option here going to be to setup my own Payment Gateway or is there a simpler solution?

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• console.log() and google chrome

  - by Lorenzo C

  I'm testing a library and I use console.log() function to visualyze values. There is a strange behaviour of Google Chrome (in other browser like Firefox it doesn't happend). If I try to store strings in Array object when I log them, sometimes values appears undefined. Code example (item.name is a string) var arrayItemsSearch = [item.name]; var itemRedrawName = [item.name]; console.log("arrayItemsSearch: ", arrayItemsSearch); console.log("itemRedrawName: ", itemRedrawName); Firefox output is correct arrayItemsSearch: ["elem[0]"] itemRedrawName: ["elem[0]"] Chrome output is not correct arrayItemsSearch: [undefined × 1] itemRedrawName: ["elem[0]"] Is this a Chrome bug? Or is this beacuse in Javascript strings are immutable objects and so something that I don't understand goes wrong?

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• drawImage in Java applet flickers in Safari

  - by lcvinny

  I'm having a flicker problem in a Java applet in Safari (Mac). However, it's not the usual double buffering problem. I have isolated it down to one single drawImage call (no redundant repaint, no clear is called), which gives a white flicker before painting the image but not on every repaint. In fact, I measured the duration of the drawImage call, which is normally about 1ms, but up to 30ms about every 5th time paint is called, which is when it flickers. Repaints are triggered when I drag a component or when the window is scrolled. Is this a bug in the java implementation on OSX, and is there a fix for it?

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• Can I test for the end of the content of a text/plain file with Selenium or javascript?

  - by fool4jesus

  I have a page that results in a text/plain file being displayed in the browser that looks like this: ... Admin Site Administration 2010-04-21 22:26:34 [email protected] Test Site Bob Smith 2010-04-21 22:27:09 [email protected] Admin Site Administration 2010-04-21 22:29:26 [email protected] I am trying to write a Selenium test against this that verifies the last line of the file has "[email protected]" at the end. How would you do this? I can't depend on the date/time as this is a login report that is constantly getting updated - all I want is to ensure that the last line ends with that email address. And I can't figure out how to do it using Selenium expressions, DOM, or XPath.

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• Is there a Delphi standard function for escaping HTML?

  - by Mason Wheeler

  I've got a report that's supposed to take a grid control and produce HTML output. One of the columns in the grid can display any of a number of values, or <Any>. When this gets output to HTML, of course, it ends up blank. I could probably write up some routine to use StringReplace to turn that into &lt;Any&gt; so it would display this particular case correctly, but I figure there's probably one in the RTL somewhere that's already been tested and does it right. Anyone know where I could find it?

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• Is it possible to use SWT on a Mac with Mac Java 1.6

  - by ?????

  The official Eclipse site seems to indicate this is not possible: https://bugs.eclipse.org/bugs/show_bug.cgi?id=216051 which says: Apple is not supporting the 64-bit carbon API. SWT is written using carbon so it must be 32-bit. Apple won't support 32-bit JDK 1.6. Therefore SWT won't run on JDK 1.6 (along with any other Java program that had natives that made carbon calls). Nothing we can do here other than port to cocoa (which has been started but is still in the early stages). Is this still true? (This bug report comment is from over a year ago.) Is there no way to write an SWT app that I can distribute and will run on any Mac unless the user installs an old/Sun VM?

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• Best Practice: Software Versioning

  - by Sebi

  I couldn't find a similar question here on SO, but if you find one please link. Is there any guideline or standard best practice how to version a software you develop in your spare time for fun, but nevertheless will be used by some people? I think it's necessary to version such software so that you know about with version one is talking about (e.g. for bug fixing, support, and so on). But where do I start the versioning? 0.0.0? or 0.0? And then how to I increment the numbers? major release.minor change? and should'nt any commit to a version control system be another version? or is this only for versions which are used in a productive manner?

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• Crystal Reports 10: Nested Formula

  - by Heather

  I've a report which shows five different activity codes. I'd like to sum all like codes and place a total for each of the 5 activity codes in a group footer. I have it working for one activity code, but would like to write a formula which will look for all five and total each. This is what I have: (if {@activitycode_id}= "Not Ready" then {iActivityCodeStat.ActivityTime}else 0) What is the proper syntax to add additional ifs into one formula? And then the best approach to totaling each one? Thank you!

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• Website renders two scroll bars, is it the CSS, xhtml, or some jquery plugin?

  - by Muhammad

  I've come to notice a bug on my website, I see that there's two scroll bars when the window is re-sized from a full sized window (my desktop's 1280x900). This issue is untraceable with Firebug and it shows up on all browsers. I'm using a JQuery UI script on the page as well but I'm not sure if that's what's doing this. What's a good way to go about getting rid of this? Or has anyone ever encountered having two scroll bars on the page? BTW: The in-page scroll bar is actually above the footer, if that helps.

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• Need help in Architecture design in java

  - by palakolanusrinu

  Can anyone help in architecture design of one of my complex application. Requirement : In web based application, we need to generate Excel kind of report as HTML page and after that we need to perform different kinds of operations like Add manual rows Delete rows Edit rows adding comments based on each cell viewing the added comments. attaching the file based on each cell viewing the attached file. Collapsible functionality for some of rows In the process of design we have come up with DB design and application framework is Spring. and for Web not yet finalized. what is the best approach to implement this kind of UI? --JSF?(keep in mind we need to Excel operations like above mentioned operations) -- Any reporting tool which will provide editing functionality? Please suggest me How can we do it? and what is the best technology for it? or is there any reporting tools?

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• Using member variables inherited from a templated base class (C++)

  - by Aaron Becker

  I'm trying to use member variables of a templated base class in a derived class, as in this example: template <class dtype> struct A { int x; }; template <class dtype> struct B : public A<dtype> { void test() { int id1 = this->x; // always works int id2 = A<dtype>::x; // always works int id3 = B::x; // always works int id4 = x; // fails in gcc & clang, works in icc and xlc } }; gcc and clang are both very picky about using this variable, and require either an explicit scope or the explicit use of "this". With some other compilers (xlc and icc), things work as I would expect. Is this a case of xlc and icc allowing code that's not standard, or a bug in gcc and clang?

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• how do you get qTip to have proper width when loading content via ajax

  - by ooo

  i have an asp.net mvc site and here is a dynamic tooltip using qTip Here is my code: $('a.showNutritionInfo').each(function() { $(this).qtip({ content: { text: '<img src="../../images/ajax-loader1.gif" alt="" />', style: { width: 450 }, url: '/Tracker/NutritionInfo/' + $(this).attr('id'), method: 'get' } }); }); this works perfectly EXCEPT the width attribute listed above is ignored. No matter what i put in that width attribute, i get the same size width tooltip which is about half of the width that i need. the height is perfectly fine. any ideas? is this a bug in the product ?

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