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• Survey: Do you write custom SQL CLR procedures/functions/etc

  - by James Luetkehoelter

  I'm quite curious because despite the great capabilities of writing CLR-based stored procedures to off-load those nasty operations TSQL isn't that great at (like iteration, or complex math), I'm continuing to see a wealth of SQL 2008 databases with complex stored procedures and functions which would make great candidates. The in-house skill to create the CLR code exists as well, but there is flat out resistance to use it. In one scenario I was told "Oh, iteration isn't a problem because we've trained...(read more)

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• Canonicalization of single, small pages like reviews or product categories

  - by Valorized

  In general I pretty much like the idea of canonicalization. And in most cases, Google explains possible procedures in a clear way. For example: If I have duplicates because of parameters (eg: &sort=desc) it's clear to use the canonical for the site, provided the within the head-tag. However I'm wondering how to handle "small - no to say thin content - sites". What's my definition of a small site? An Example: On one of my main sites, we use a directory based url-structure. Let's see: example.com/ (root) example.com/category-abc/ example.com/category-abc/produkt-xy/ Moreover we provide on page, that includes all products example.com/all-categories/ (lists all products the same way as in the categories) In case of reviews, we use a similar structure: example.com/reviews/product-xy/ shows all review for one certain product example.com/reviews/product-xy/abc-your-product-is-great/ shows one certain review example.com/reviews/ shows all reviews for all products (latest first) Let's make it even more complicated: On every product site, there are the latest 2 reviews at the end of the page. So you see, a lot of potential duplicates. Q1: Should I create canonicals for a: example.com/category-abc/ to example.com/all-categories/ b: example.com/reviews/product-xy/abc-your-product-is-great/ to example.com/reviews/product-xy/ or to example.com/review/ or none of them? Q2: Can I link the collection of categories (all-categories/) and collection of all reviews (reviews/ and reviews/product-xy/) to the single category respectively to the single review. Example: example.com/reviews/ includes - let's say - 100 reviews. Can I somehow use a markup that tells search engines: "Hey, wait, you are now looking at a collection of 100 reviews - do not index this collection, you should rather prefer indexing every single review as a single page!". In HTML it might be something like that (which - of course - does not work, it's only to show you what I mean): <div class="review" rel="canonical" href="http://example.com/reviews/product-xz/abc-your-product-is-great/"> HERE GOES THE REVIEW</div> Reason: I don't think it is a great user experience if the user searches for "your product is great" and lands on example.com/reviews/ instead of example.com/reviews/product-xy/abc-your-product-is-great/. On the first site, he will have to search and might stop because of frustration. The second result, however, might lead to a conversion. The same applies for categories. If the user is searching for category-Z, he might land on the all-categories page and he has to scroll down to the (last) category, to find what he searched for (Z). So what's best practice? What should I do?

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• Examples of Liskov Substitution

  - by james lewis

  I'm facilitating a session next week on the Liskov Substitution Principle and I was wondering if anyone had any examples of violations 'from the trenches'? I'm looking for something other than uncle Bob's rectangle - square problem and the persistent set problem he talks about in A-PPP (although that is a great example). So far I'm using the example of a (very simple) List and an IndexedList as the 'correct' use of inheritance. And the addition of a Set to this hierarchy as a violation (as a Set is distinct; strengthening the pre condition of the Add method). I've also taken this great example and it's solution from this question Both those examples are great but I'm looking for something more subtle and harder to spot. So far I've come up with nothing so if you've got a great, subtle example post it up. Also, any metaphors you've come across that helped you understand LSP would be really useful too.

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• Wireframing: A Day In the Life of UX Workshop at Oracle

  - by ultan o'broin

  The Oracle Applications User Experience team's Day in the Life (DITL) of User Experience (UX) event was run in Oracle's Redwood Shores HQ for Oracle Usability Advisory Board (OUAB) members. I was charged with putting together a wireframing session, together with Director of Financial Applications User Experience, Scott Robinson (@scottrobinson). Example of stunning new wireframing visuals we used on the DITL events. We put on a lively show, explaining the basics of wireframing, the concepts, what it is and isn't, considerations on wireframing tool choice, and then imparting some tips and best practices. But the real energy came when the OUAB customers and partners in the room were challenge to do some wireframing of their own. Wireframing is about bringing your business and product use cases to life in real UX visual terms, by creating a low-fidelity drawing to iterate and agree on in advance of prototyping and coding what is to be finally built and rolled out for users. All the best people wireframe. Leonardo da Vinci used "cartoons" on some great works, tracing outlines first and using red ochre or charcoal dropped through holes in the tracing parchment onto the canvas to outline the subject. (Image distributed under Wikimedia commons license) Wireframing an application's user experience design enables you to: Obtain stakeholder buy-in. Enable faster iteration of different designs. Determine the task flow navigation paths (in Oracle Fusion Applications navigation is linked with user roles). Develop a content strategy (readability, search engine optimization (SEO) of content, and so on) Lay out the pages, widgets, groups of features, and so on. Apply usability heuristics early (no replacement for usability testing, but a great way to do some heavy-lifting up front). Decide upstream which functional user experience design patterns to apply (out of the box solutions that expedite productivity). Assess which Oracle Application Development Framework (ADF) or equivalent technology components can be used (again, developer productivity is enhanced downstream). We ran a lively hands-on exercise where teams wireframed a choice of application scenarios using the time-honored tools of pen and paper. Scott worked the floor like a pro, pointing out great use of features, best practices, innovations, and making sure that the whole concept of wireframing, the gestalt, transferred. "We need more buttons!" The cry of the energized. Not quite. The winning wireframe session (online shopping scenario) from the Applications UX DITL event shown. Great fun, great energy, and great teamwork were evident in the room. Naturally, there were prizes for the best wireframe. Well, actually, prizes were handed out to the other attendees too! An exciting, slightly different aspect to delivery of this session made the wireframing event one of the highlights of the day. And definitely, something we will repeat again when we get the chance. Thanks to everyone who attended, contributed, and helped organize.

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• Looking for 2 SQL Contractors to join my team in North London

  - by simonsabin

  I am looking for 2 SQL Contractors to join my data team to help build our database platform. The role is for a SQL generalist. The person will be doing TSQL, SSIS, SSRS and maybe some SSAS. Experience of agile development processes would be great. This is a great opportunity to work in a great team. If you are interested them please let me know. http://sqlblogcasts.com/blogs/simons/contact.aspx...(read more)

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• Developing Good Contacts

  There are millions of was you can develop good networking contacts, but you must be open to meeting new people. In the information technology industry, everyone is a potential client. So any place you can meet people is a good place to develop good networking contacts. Here are a few examples Online Discussion Forums – Online forums are a great place to show your knowledge of a subject and allow you to meet people that share your same interests Blog Networks – Allowing others to read your thoughts and comment on them. In addition, you can so the same on other blogs with in the network. Networking Sites – Networking sites are a great way to find new contacts based on your current contacts because you can share common friends, and possibly common interests Volunteering – Volunteering is a great way to meet new contacts, and you can help others at the same time Civic Organizations – Participating in organizations or clubs like the Lions Club, Rotary Club, and religious affiliated organizations because you can meet people of all walks of life, and can share and contribute ideas for common goals Chamber of Commerce – This is another great way to meet contacts especially if you are interested in starting your own business. The chamber is a great way to meet other business oriented people who are always looking to collaborate and improve their business. Family and Friends – Family and friends are another excellent to meet new contacts, because they can always be on the lookout for opportunities for you. For example your brother hears that a friend of his needs a new website, so he gives him your number and highly recommends you. This is really good because the potential client is looking for the service you can perform, and you where already highly recommend.

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• Working for Web using open-source Technologies

  - by anirudha

  As a Web Developer we all have own dream to make a great web application. a great application was built upon high discipline and best practice on the process of development then we can make modification easier in future as if we want. the user feedback also have a matter because they tell us what they want or expected with the application we make day and night. sometime they report a nice story , experience or a problem they got with our application. so that's matter because they telling about our application much more because they use our software and a part of process of future development or next version of application we make. so the Web have a good thing that they updated as soon as possible. in desktop application their is a numbers of trouble client have when they want to use our application. first thing that installation of software never goes right on every system. big company spent a big amount of money to troble these problem the user have with their software.   Web application is nice implementation of application because their is no trouble with installation all have same experience and if something goes wrong patch come soon and no waiting for new version. Chrome even a desktop application [browser] but they automatically update themselves so their is no trouble for user to get next version now hasseles.    Web application development in Microsoft way have their own rule , pattern practice to make better application in less time. the technologies i want to show you here is some great opensource example like MySQL jQuery and ASP.NET MVC a framework based on ASP.NET server side language.   For going to next step we need to show you a list of software you need to have to fully experience this tutorial.   Visual Web Developer 2010 Express Edition  MySQL [open-source RDBMS]   Query [open-source javascript library]   for getting these software you need to pay nothing.   Visual Web Developer can obtained from Microsoft.com/Express or if you are student or Web Developer you are eligible to get the Visual studio professional and many other great software from Microsoft through their Dreamspark or WebsiteSpark programmes.   MySQL is a great Relational Database management software who are freely available from MySQL.com as a database monitorting tool you can use MySQL workbrench who can be freely get from MySQL official website or many other free tool are available for begining development with MySQL   jQuery is a great library for making javascipt development easier and faster.you can obtained jQuery from jQuery.com their official website.

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• Oracle Endeca User Interface Design Pattern Library Available

  - by ultan o'broin

  Yes! The Oracle Endeca User Interface Design Pattern Library is now available for all fans of great UI design solutions for search, discovery, and navigation! The patterns explain and show some great UI realizations and include consumer world examples we can relate to. Thanks to the Oracle Endeca team and Applications UX who worked closely together to bring this great user experience resource back out to customers and partners who want to build cutting edge apps, sites, and integrations. Some great insights into how these UI design patterns can bring magical information discovery and more to users, as well as what makes Endeca people tick, are available from the Usable Apps blog Oracle Endeca User Experience: From Putting the E in E-Commerce to Magical Information Discovery.

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• Cannot get script to run at startup (tried all the simple answers)

  - by Carey Head

  I have Ubuntu Desktop 12.04 LTS running great on an older Acer desktop. I want to use this machine as an in-home server for hosting Minecraft. The command to start the Minecraft server is java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui and that works great when I cd into the correct directory and execute the above. I created a script to do this: #!/bin/bash cd /home/myuser/minecraft-server1 java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui & cd /home/myuser/minecraft-server2 java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui & exit 0 I made this .sh file executable, and it too runs great when I start it manually from the terminal. The problem I'm having is getting these to execute at startup. I have my user account on this machine to auto login. I have tried the following: Adding the following to "Startup Applications" : sh /home/myuser/myscript.sh (Nothing happens on reboot) Adding the same to /etc/rc.local (Nothing happens on reboot). I even tested this one by running /etc/rc.local from the terminal, and it executed great. Just not at boot/auto login Added the lines from the script directly to rc.local (Nothing happens on reboot). I can't help but think that there's something I'm missing. The script executes great when run manually, but will not run at boot/auto login. Many thanks in advance.

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• Filtering Client IP from Access Log for Urchin

  - by Ram Prasad

  I have some apache logs to process, and since the webserver behind two levels of reverse proxies, I am getting two IPs in the X-Forwarded-For header.. for example: 208.34.234.55, 127.0.0.1 - - [29/Oct/2009:21:38:13 -0500] "GET /monkey.html HTTP/1.0" 200 20845 0 0 "http://www.monkey.com/" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.15) Gecko/2009101601 Firefox/3.0.15 (.NET CLR 3.5.30729)" Now, how do I filter this in Urchin (or remove this in Apache logging) so, 127.0.0.1 is removed from processing. Currently urchin is not able to recognize the multuple IP address so it does not log the remote IP

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• Unique string values in range

  - by Dean Smith

  I have some spreadsheets where there are large number of cells that have essentially been used for free text. There is a finite set of values for this free text and most, if not all repeat. eg. A B C D 1 Monkey Gorilla Cat Dog 2 Dog Cat Gorilla Gorilla 3 Dog Dog Dog Cat There are probably 50 or so different cell values spread over multiple sheets and hundreds of rows and columns. I need to analyse this data and count occurancies, which is not a problem other than getting a list of unique values to start with and this has been driving me up the wall. What is the best way to produce this list. So from the above we would have Monkey Dog Cat Gorilla In order of preferred solutions, as this will need to be done monthly. Dynamic formula based VB Script Other ( Advanced filtering or other manual steps )

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• Binding a property to change the listbox items foreground individually for each item

  - by Eyal-Shilony

  I'm trying to change the foreground color of the items in the ListBox individually for each item, I've already posted a similar question but this one is more concrete. I hoped that the state of the color is reserved for each item added to the ListBox, so I tried to create a property (in this case "HotkeysForeground"), bind it and change the color when the items are added in the "HotkeyManager_NewHotkey" event, the problem it's changing the foreground color for all the items in the ListBox. How can I do that per item ? Here is the ViewModel I use. namespace Monkey.Core.ViewModel { using System; using System.Collections.ObjectModel; using System.Windows.Media; using Monkey.Core.SystemMonitor.Accessibility; using Monkey.Core.SystemMonitor.Input; public class MainWindowViewModel : WorkspaceViewModel { private readonly FocusManager _focusManager; private readonly HotkeyManager _hotkeyManager; private readonly ObservableCollection<string> _hotkeys; private Color _foregroundColor; private string _title; public MainWindowViewModel() { _hotkeys = new ObservableCollection<string>(); _hotkeyManager = new HotkeyManager(); _hotkeyManager.NewHotkey += HotkeyManager_NewHotkey; _focusManager = new FocusManager(); _focusManager.Focus += FocusManager_Focus; } public Color HotkeysForeground { get { return _foregroundColor; } set { _foregroundColor = value; OnPropertyChanged(() => HotkeysForeground); } } public ReadOnlyObservableCollection<string> Hotkeys { get { return new ReadOnlyObservableCollection<string>(_hotkeys); } } public string Title { get { return _title; } set { _title = value; OnPropertyChanged(() => Title); } } protected override void OnDispose() { base.OnDispose(); _hotkeyManager.Dispose(); _focusManager.Dispose(); } private void FocusManager_Focus(object sender, FocusManagerEventArgs e) { Title = e.Title; } private void HotkeyManager_NewHotkey(object sender, EventArgs eventArgs) { HotkeysForeground = _hotkeys.Count <= 2 ? Colors.Blue : Colors.Brown; _hotkeys.Clear(); foreach (var hotkey in _hotkeyManager.GetHotkeys()) { _hotkeys.Add(hotkey); } } } } Here is the view. <Window x:Class="Monkey.View.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:System="clr-namespace:System;assembly=mscorlib" Title="{Binding Mode=OneWay, Path=Title, UpdateSourceTrigger=PropertyChanged}" Height="200" Width="200" ShowInTaskbar="False" WindowStyle="ToolWindow" Topmost="True" ResizeMode="CanResizeWithGrip" AllowsTransparency="False"> <Window.Resources> <SolidColorBrush Color="{Binding HotkeysForeground}" x:Key="HotkeysBrush"/> </Window.Resources> <ListBox Canvas.Left="110" Canvas.Top="74" Name="HotkeyList" Height="Auto" Width="Auto" HorizontalContentAlignment="Left" BorderThickness="0" ScrollViewer.CanContentScroll="False" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Disabled" ItemsSource="{Binding Path=Hotkeys}" VerticalAlignment="Stretch" VerticalContentAlignment="Center" FontSize="20"> <ListBox.ItemContainerStyle> <Style TargetType="ListBoxItem"> <Setter Property="IsEnabled" Value="False" /> </Style> </ListBox.ItemContainerStyle> <ListBox.ItemTemplate> <DataTemplate> <Label Content="{Binding}" Foreground="{StaticResource HotkeysBrush}"/> </DataTemplate> </ListBox.ItemTemplate> </ListBox> </Window> Thank you in advance.

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• Java 2D Game Frameworks

  - by Software Monkey

  I have been looking at frameworks for writing 2D games in Java - part of a growing desire to rediscover my roots in writing those simple but addictive video games. I have googled and found some possibilities, but it's hard to judge which is best without investing significant time in each. Does anyone out there have any recommendations from experience, preferably with a list of pro's and con's for the framework. NOTE: I am not looking so much for comparisons between frameworks but, rather, feedback on any given framework from actually having used it firsthand, or knowing someone who has. The other possibility I am considering is rolling my own, but would rather not. EDIT: I am targeting Java on the Desktop, and expect capable machines, though not state of the art. Some of the 2D engines I have found: Free PulpCore (License: BSD) Slick2D (License: BSD) GTGE - Golden T Game Engine JGame GAGE - Genuine Advantage Gaming Engine GameFrame for Java Basilisk (2D and 3D) Free for non-commercial use Genuts EasyWay - a high-level 2D engine

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• Running JUnit test classes from another JUnit test class

  - by Dr. Monkey

  I have two classes that I am testing (let's call them ClassA and ClassB). Each has its own JUnit test class (testClassA and testClassB respectively). ClassA relies on ClassB for its normal functioning, so I want to make sure ClassB passes its tests before running testClassA (otherwise the results from testClassA would be meaningless). What is the best way to do this? In this case it is for an assignment so I need to keep it to the two specified test classes if possible. Can/should I throw an exception from testClassA if testClassB's tests aren't all passed? This would require testClassB to run invisibly and just report its success/failure to testClassA, rather than to the GUI (via JUnit). I am using Eclipse and JUnit 4.8.1

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• What's a good way to teach my son to program Java

  - by Software Monkey

  OK, so I've read through various posts about teaching beginner's to program, and there were some helpful things I will look at more closely. But what I want to know is whether there are any effective tools out there to teach a kid Java specifically? I want to teach him Java specifically because (a) with my strong background in C I feel that's too complex, (b) Java is the other language I know extremely well and therefore I can assist meaningfully without needing to teach myself a new but (to me) useless language, and (c) I feel that managed languages are the future, and lastly (d) Java is one of the simplest of all the languages I know well (aside from basic). I learned in basic, and I am open to teaching that first, but I am unaware of a decent free basic shell for Windows (though I haven't really searched, yet since it's not my first choice), and would anyway want to progress quickly to Java. My son is 8, so that's a couple of years earlier than I started - but he has expressed an interest in learning to program (possibly because I work from home a lot and he sees me programming all the time). If no-one can suggest a tool designed for this purpose, I will probably start him off with text/console based apps to teach the basics, and then progress to GUI building. Oh, one last thing, I am not a fan of IDE's (old school text editor type), so I would not be put off at all by a system that has him typing real code, and would likely prefer that to a toy drag/drop system. EDIT: Just to clarify; I really am specifically after ways to teach him Java; there are already a good many posts with good answers for other language alternatives - but that's not what I am looking for here. EDIT: What about Java frameworks for 2D video games - can anyone recommend any of them from personal experience? I like the idea of him starting with the mechanics in place (main game loop, scoring, etc) and adding the specifics for a game of his own imagining - that's what I did, though for me it was basic on a Commodore VIC-20 and a Sinclair ZX-81.

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• Shortcut "or-assignment" (|=) operator in Java

  - by Dr. Monkey

  I have a long set of comparisons to do in Java, and I'd like to know if one or more of them come out as true. The string of comparisons was long and difficult to read, so I broke it up for readability, and automatically went to use a shortcut operator |= rather than negativeValue = negativeValue || boolean. boolean negativeValue = false; negativeValue |= (defaultStock < 0); negativeValue |= (defaultWholesale < 0); negativeValue |= (defaultRetail < 0); negativeValue |= (defaultDelivery < 0); I expect negativeValue to be true if any of the default<something> values are negative. Is this valid? Will it do what I expect? I couldn't see it mentioned on Sun's site or stackoverflow, but Eclipse doesn't seem to have a problem with it and the code compiles and runs.

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• Assigning static final int in a JUnit (4.8.1) test suite

  - by Dr. Monkey

  I have a JUnit test class in which I have several static final ints that can be redefined at the top of the tester code to allow some variation in the test values. I have logic in my @BeforeClass method to ensure that the developer has entered values that won't break my tests. I would like to improve variation further by allowing these ints to be set to (sensible) random values in the @BeforeClass method if the developer sets a boolean useRandomValues = true;. I could simply remove the final keyword to allow the random values to overwrite the initialisation values, but I have final there to ensure that these values are not inadvertently changed, as some tests rely on the consistency of these values. Can I use a constructor in a JUnit test class? Eclipse starts putting red underlines everywhere if I try to make my @BeforeClass into a constructor for the test class, and making a separate constructor doesn't seem to allow assignment to these variables (even if I leave them unassigned at their declaration); Is there another way to ensure that any attempt to change these variables after the @BeforeClass method will result in a compile-time error? Can I make something final after it has been initialised?

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• window.onload seems to trigger before the DOM is loaded (JavaScript)

  - by Dr. Monkey

  I am having trouble with the window.onload and document.onload events. Everything I read tells me these will not trigger until the DOM is fully loaded with all its resources, it seems like this isn't happening for me: I tried the following simple page in Chrome 4.1.249.1036 (41514) and IE 8.0.7600.16385 with the same result: both displayed the message "It failed!", indicating that myParagraph is not loaded (and so the DOM seems incomplete). <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <script type="text/javascript"> window.onload = doThis(); // document.onload gives the same result function doThis() { if (document.getElementById("myParagraph")) { alert("It worked!"); } else { alert("It failed!"); } } </script> </head> <body> <p id="myParagraph">Nothing is here.</p> </body> </html> I am using more complex scripts than this, in an external .js file, but this illustrates the problem. I can get it working by having window.onload set a timer for half a second to run doThis(), but this seems like an inelegant solution, and doesn't answer the question of why window.onload doesn't seem to do what everyone says it does. Another solution would be to set a timer that will check if the DOM is loaded, and if not it will just call itself half a second later (so it will keep checking until the DOM is loaded), but this seems overly complex to me. Is there a more appropriate event to use?

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• Java Nimbus LAF with transparent text fields

  - by Software Monkey

  I have an application that uses disabled JTextFields in several places which are intended to be transparent - allowing the background to show through instead of the text field's normal background. When running the new Nimbus LAF these fields are opaque (despite setting setOpaque(false)), and my UI is broken. It's as if the LAF is ignoring the opaque property. Setting a background color explicitly is both difficult in several places, and less than optimal due to background images actually doesn't work - it still paints it's LAF default background over the top, leaving a border-like appearance (the splash screen below has the background explicitly set to match the image). Any ideas on how I can get Nimbus to not paint the background for a JTextField? Note: I need a JTextField, rather than a JLabel, because I need the thread-safe setText(), and wrapping capability. Note: My fallback position is to continue using the system LAF, but Nimbus does look substantially better. See example images below. Conclusions The surprise at this behavior is due to a misinterpretation of what setOpaque() is meant to do - from the Nimbus bug report: This is a problem the the orginal design of Swing and how it has been confusing for years. The issue is setOpaque(false) has had a side effect in exiting LAFs which is that of hiding the background which is not really what it is ment for. It is ment to say that the component my have transparent parts and swing should paint the parent component behind it. It's unfortunate that the Nimbus components also appear not to honor setBackground(null) which would otherwise be the recommended way to stop the background painting. Setting a fully transparent background seems unintuitive to me. In my opinion, setOpaque()/isOpaque() is a faulty public API choice which should have been only: public boolean isFullyOpaque(); I say this, because isOpaque()==true is a contract with Swing that the component subclass will take responsibility for painting it's entire background - which means the parent can skip painting that region if it wants (which is an important performance enhancement). Something external cannot directly change this contract (legitimately), whose fulfillment may be coded into the component. So the opacity of the component should not have been settable using setOpaque(). Instead something like setBackground(null) should cause many components to "no long have a background" and therefore become not fully opaque. By way of example, in an ideal world most components should have an isOpaque() that looks like this: public boolean isOpaque() { return (background!=null); }

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• How do I center a java.awt.FileDialog on the screen

  - by Software Monkey

  I have never been able to figure this one out; the usual suspects don't work. Given: FileDialog dlg=null; dlg=new FileDialog(owner,"Select File to Load",FileDialog.LOAD); dlg.setFile(null); dlg.setVisible(true); is there any way to get that dialog centered?

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• are deleted entries counted in the load factor of a hash table using open addressing

  - by Dr. Monkey

  When calculating the load factor of a hashtable with an open-addressing array implementation I am using: numberOfKeysInArray/sizeOfArray however it occurred to me that since deleted entries must be marked as such (to distinguish them from empty spaces), it might make sense to include these in the number of keys. My thinking is that as far as estimating the average number of probes to find an entry, deleted entries should count towards the load factor, but as far as inserting a new key they should not. Which is the proper calculation: including deleted keys or not?

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• Spring Design By Contract: where to start?

  - by Build Monkey

  I am trying to put a "Contract" on a method call. My web application is in Spring 3. Is writing customs Annotations the right way to go. If so, any pointers( I didn't find anything in spring reference docs). Should I use tools like "Modern Jass", JML ...? Again any pointers will be useful. Thanks

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• How do I replace custom "tags" in a string?

  - by Fake Code Monkey Rashid

  Given the following: $foo = "Yo [user Cobb] I heard you like dreams so I put a dream in yo dream in yo dream so you can dream while you dream while you dream." I'd like to do this: $foo = bar($foo); echo $foo; And get something like this: Yo Cobb I heard you like dreams so I put a dream in yo dream in yo dream so you can dream while you dream while you dream. I'm unsure of how the bar function should work. I think this is doable with regular expressions but I personally find those hard to understand. Using the strpos function is another method but I wonder if there is a better solution. Pseudocode is fine but actual code will be appreciated.

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• How do I add a column that displays the number of distinct rows to this query?

  - by Fake Code Monkey Rashid

  Hello good people! I don't know how to ask my question clearly so I'll just show you the money. To start with, here's a sample table: CREATE TABLE sandbox ( id integer NOT NULL, callsign text NOT NULL, this text NOT NULL, that text NOT NULL, "timestamp" timestamp with time zone DEFAULT now() NOT NULL ); CREATE SEQUENCE sandbox_id_seq START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE CACHE 1; ALTER SEQUENCE sandbox_id_seq OWNED BY sandbox.id; SELECT pg_catalog.setval('sandbox_id_seq', 14, true); ALTER TABLE sandbox ALTER COLUMN id SET DEFAULT nextval('sandbox_id_seq'::regclass); INSERT INTO sandbox VALUES (1, 'alpha', 'foo', 'qux', '2010-12-29 16:51:09.897579+00'); INSERT INTO sandbox VALUES (2, 'alpha', 'foo', 'qux', '2010-12-29 16:51:36.108867+00'); INSERT INTO sandbox VALUES (3, 'bravo', 'bar', 'quxx', '2010-12-29 16:52:36.370507+00'); INSERT INTO sandbox VALUES (4, 'bravo', 'foo', 'quxx', '2010-12-29 16:52:47.584663+00'); INSERT INTO sandbox VALUES (5, 'charlie', 'foo', 'corge', '2010-12-29 16:53:00.742356+00'); INSERT INTO sandbox VALUES (6, 'delta', 'foo', 'qux', '2010-12-29 16:53:10.884721+00'); INSERT INTO sandbox VALUES (7, 'alpha', 'foo', 'corge', '2010-12-29 16:53:21.242904+00'); INSERT INTO sandbox VALUES (8, 'alpha', 'bar', 'corge', '2010-12-29 16:54:33.318907+00'); INSERT INTO sandbox VALUES (9, 'alpha', 'baz', 'quxx', '2010-12-29 16:54:38.727095+00'); INSERT INTO sandbox VALUES (10, 'alpha', 'bar', 'qux', '2010-12-29 16:54:46.237294+00'); INSERT INTO sandbox VALUES (11, 'alpha', 'baz', 'qux', '2010-12-29 16:54:53.891606+00'); INSERT INTO sandbox VALUES (12, 'alpha', 'baz', 'corge', '2010-12-29 16:55:39.596076+00'); INSERT INTO sandbox VALUES (13, 'alpha', 'baz', 'corge', '2010-12-29 16:55:44.834019+00'); INSERT INTO sandbox VALUES (14, 'alpha', 'foo', 'qux', '2010-12-29 16:55:52.848792+00'); ALTER TABLE ONLY sandbox ADD CONSTRAINT sandbox_pkey PRIMARY KEY (id); Here's the current SQL query I have: SELECT * FROM ( SELECT DISTINCT ON (this, that) id, this, that, timestamp FROM sandbox WHERE callsign = 'alpha' AND CAST(timestamp AS date) = '2010-12-29' ) playground ORDER BY timestamp DESC This is the result it gives me: id this that timestamp ----------------------------------------------------- 14 foo qux 2010-12-29 16:55:52.848792+00 13 baz corge 2010-12-29 16:55:44.834019+00 11 baz qux 2010-12-29 16:54:53.891606+00 10 bar qux 2010-12-29 16:54:46.237294+00 9 baz quxx 2010-12-29 16:54:38.727095+00 8 bar corge 2010-12-29 16:54:33.318907+00 7 foo corge 2010-12-29 16:53:21.242904+00 This is what I want to see: id this that timestamp count ------------------------------------------------------------- 14 foo qux 2010-12-29 16:55:52.848792+00 3 13 baz corge 2010-12-29 16:55:44.834019+00 2 11 baz qux 2010-12-29 16:54:53.891606+00 1 10 bar qux 2010-12-29 16:54:46.237294+00 1 9 baz quxx 2010-12-29 16:54:38.727095+00 1 8 bar corge 2010-12-29 16:54:33.318907+00 1 7 foo corge 2010-12-29 16:53:21.242904+00 1 EDIT: I'm using PostgreSQL 9.0.* (if that helps any).

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• VS C++ throwing divide by zero exception after a specific check

  - by Dr. Monkey

  In the following C++ code, it should be impossible for ain integer division by zero to occur: // gradedUnits and totalGrades are both of type int if (gradedUnits == 0) { return 0; } else { return totalGrades/gradedUnits; //call stack points to this line } however Visual Studio is popping up this error: Unhandled exception at 0x001712c0 in DSA_asgn1.exe: 0xC0000094: Integer division by zero. And the stack trace points to the line indicated in the code. It seems like VS might just do this with any integer division, without checking whether a divide by zero is possible. Do I need to catch this exception even though the code should never be able to throw it? If so, what's the best way to go about this? This is for an assignment that specifies VS 2005/2008 with C++. I would prefer not to make things more complicated than I need to, but at the same time I like to do things properly where possible.

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