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  • Google Maps API v3 - Directions/Paths breaking KML Overlay Infowindows

    - by Douglas
    I'm in the end stages before content filling and then production on the Google Maps project I've been working on. A number of bugs and such have been thwarted, but this latest one has me relatively stumped. The demo map can be viewed here: http://dougglover.com/samples/finalProduct/ Everything works fine until you create a path using the Directions section(not to be confused with Get Directions). To reproduce the problem, play around with the map, click on a building or two, just to see the functionality. After ensuring that clicking on a building works(brings up an infowindow), choose two buildings to get directions to in the Directions area. It works great with the routing algorithm I've implemented, and the paths show up nicely, and intelligently. The problem being that you can't click buildings anymore to see their info. I'm assuming it has something to do with the z-index error popping up in the console, but I'm not sure how to handle that if it is the problem. Any guidance is greatly appreciated. :)

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  • What limits scaling in this simple OpenMP program?

    - by Douglas B. Staple
    I'm trying to understand limits to parallelization on a 48-core system (4xAMD Opteron 6348, 2.8 Ghz, 12 cores per CPU). I wrote this tiny OpenMP code to test the speedup in what I thought would be the best possible situation (the task is embarrassingly parallel): // Compile with: gcc scaling.c -std=c99 -fopenmp -O3 #include <stdio.h> #include <stdint.h> int main(){ const uint64_t umin=1; const uint64_t umax=10000000000LL; double sum=0.; #pragma omp parallel for reduction(+:sum) for(uint64_t u=umin; u<umax; u++) sum+=1./u/u; printf("%e\n", sum); } I was surprised to find that the scaling is highly nonlinear. It takes about 2.9s for the code to run with 48 threads, 3.1s with 36 threads, 3.7s with 24 threads, 4.9s with 12 threads, and 57s for the code to run with 1 thread. Unfortunately I have to say that there is one process running on the computer using 100% of one core, so that might be affecting it. It's not my process, so I can't end it to test the difference, but somehow I doubt that's making the difference between a 19~20x speedup and the ideal 48x speedup. To make sure it wasn't an OpenMP issue, I ran two copies of the program at the same time with 24 threads each (one with umin=1, umax=5000000000, and the other with umin=5000000000, umax=10000000000). In that case both copies of the program finish after 2.9s, so it's exactly the same as running 48 threads with a single instance of the program. What's preventing linear scaling with this simple program?

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  • Inline text box labels with WPF

    - by Douglas
    I'm trying to reproduce the layout of some paper forms in a WPF application. Labels for text boxes are to be "inline" with the content of the text boxes, rather than "outside" like normal Windows forms. So, with an Xxxxxx label: +-----------------------------+ | Xxxxxx: some text written | | in the multiline input. | | | | another paragraph continues | | without indentation. | | | | | +-----------------------------+ The Xxxxxx cannot be editable, if the user selects all the content of the text box, the label must remain unselected, I need to be able to style the text colour/formatting of the label separately, when there is no text in the text box, but it has focus, the caret should flash just after the label, and I need the baselines of the text in the text box and the label to line up. One solution I tried was putting a textblock partially over the input, then using text indent to indent the editable text, though this caused problems with following paragraphs, since they were indented too. I'm not sure how to indent just the first paragraph. It required some fiddling to get the text to line up - a more reliable setup would be ideal. So, any suggestions on how to set this up? Thanks

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  • C++ Structure within itself?

    - by Douglas
    I've been trying to port this code to python, but there is something I do not quite understand in C++ (I do know a bit of C++ but this is beyond me): typedef struct huffnode_s { struct huffnode_s *zero; struct huffnode_s *one; unsigned char val; float freq; } huffnode_t; What I don't get is how huffnode_s can be within itself, I've never seen this before and don't quite understand it. What does this mean, and if someone can, what would be the python equivalent?

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  • Setting the height of a row in a JTable in java

    - by Douglas Grealis
    I have been searching for a solution to be able to increase the height of a row in a JTable. I have been using the setRowHeight(int int) method which compiles and runs OK, but no row[s] have been increased. When I use the getRowHeight(int) method of the row I set the height to, it does print out the size I increased the row to, so I'm not sure what is wrong. The code below is a rough illustration how I am trying to solve it. My class extends JFrame. String[] columnNames = {"Column 1", "Column 2", "Column 1 3"}; JTable table = new JTable(new DefaultTableModel(columnNames, people.size())); DefaultTableModel model = (DefaultTableModel) table.getModel(); int count =1; for(Person p: people) { model.insertRow(count,(new Object[]{count, p.getName(), p.getAge()+"", p.getNationality})); count++; } table.setRowHeight(1, 15);//Try set height to 15 (I've tried higher) Can anyone tell me where I am going wrong? I am trying to increase the height of row 1 to 15 pixels?

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  • Haskell: Dealing With Types And Exceptions

    - by Douglas Brunner
    I'd like to know the "Haskell way" to catch and handle exceptions. As shown below, I understand the basic syntax, but I'm not sure how to deal with the type system in this situation. The below code attempts to return the value of the requested environment variable. Obviously if that variable isn't there I want to catch the exception and return Nothing. getEnvVar x = do { var <- getEnv x; Just var; } `catch` \ex -> do { Nothing } Here is the error: Couldn't match expected type `IO a' against inferred type `Maybe String' In the expression: Just var In the first argument of `catch', namely `do { var <- getEnv x; Just var }' In the expression: do { var <- getEnv x; Just var } `catch` \ ex -> do { Nothing } I could return string values: getRequestURI x = do { requestURI <- getEnv x; return requestURI; } `catch` \ex -> do { return "" } however, this doesn't feel like the Haskell way. What is the Haskell way?

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  • Python/Django Concatenate a string depending on whether that string exists

    - by Douglas Meehan
    I'm creating a property on a Django model called "address". I want address to consist of the concatenation of a number of fields I have on my model. The problem is that not all instances of this model will have values for all of these fields. So, I want to concatenate only those fields that have values. What is the best/most Pythonic way to do this? Here are the relevant fields from the model: house = models.IntegerField('House Number', null=True, blank=True) suf = models.CharField('House Number Suffix', max_length=1, null=True, blank=True) unit = models.CharField('Address Unit', max_length=7, null=True, blank=True) stex = models.IntegerField('Address Extention', null=True, blank=True) stdir = models.CharField('Street Direction', max_length=254, null=True, blank=True) stnam = models.CharField('Street Name', max_length=30, null=True, blank=True) stdes = models.CharField('Street Designation', max_length=3, null=True, blank=True) stdessuf = models.CharField('Street Designation Suffix',max_length=1, null=True, blank=True) I could just do something like this: def _get_address(self): return "%s %s %s %s %s %s %s %s" % (self.house, self.suf, self.unit, self.stex, self.stdir, self.stname, self.stdes, self.stdessuf) but then there would be extra blank spaces in the result. I could do a series of if statements and concatenate within each, but that seems ugly. What's the best way to handle this situation? Thanks.

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  • LINQ: display results from empty lists

    - by Douglas H. M.
    I've created two entities (simplified) in C#: class Log { entries = new List<Entry>(); DateTime Date { get; set; } IList<Entry> entries { get; set; } } class Entry { DateTime ClockIn { get; set; } DateTime ClockOut { get; set; } } I am using the following code to initialize the objects: Log log1 = new Log() { Date = new DateTime(2010, 1, 1), }; log1.Entries.Add(new Entry() { ClockIn = new DateTime(0001, 1, 1, 9, 0, 0), ClockOut = new DateTime(0001, 1, 1, 12, 0, 0) }); Log log2 = new Log() { Date = new DateTime(2010, 2, 1), }; The method below is used to get the date logs: var query = from l in DB.GetLogs() from e in l.Entries orderby l.Date ascending select new { Date = l.Date, ClockIn = e.ClockIn, ClockOut = e.ClockOut, }; The result of the above LINQ query is: /* Date | Clock In | Clock Out 01/01/2010 | 09:00 | 12:00 */ My question is, what is the best way to rewrite the LINQ query above to include the results from the second object I created (Log2), since it has an empty list. In the other words, I would like to display all dates even if they don't have time values. The expected result would be: /* Date | Clock In | Clock Out 01/01/2010 | 09:00 | 12:00 02/01/2010 | | */

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  • Toggle Image Overlays in Google Maps API v3

    - by Douglas
    Hey guys. I've been building a small library for myself for a job I have at the moment building a map for a university. I've gotten pretty well everything I need in some basic form, but one thing has simply not been working, and is simply not giving me results. The university itself is sort of in a partnership with the neighboring college. It's been decided that both campuses should be included. I need to be able to toggle on/off the overlays of the campuses individually. i.e. Start with all campuses ON. User then turns OFF college campus, university overlay stays up. User can then turn it back on to display the college once more, or turn off the university as well, leaving no overlays. Here's a work in progress I'm doing at the moment: http://bgsweb.ca/maps/generator.html Basically, we need to take the one overlay, split it into multiple overlays, and enable the toggling of each individual overlay. Any assistance much appreciated!

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  • Display continious dates in Pivot Chart

    - by Douglas
    I have a set of data in a pivot table with date times and events. I've made a pivot chart with this data, and grouped the data by day and year, then display a count of events for each day. So, my horizontal axis goes from 19 March 2007 to 11 May 2010, and my vertical axis is numeric, going from zero to 140. For some days, I have zero events. These days don't seem to be shown on the horizontal axis, so 2008 is narrower than 2009. How do I display a count of zero for days with no events? I'd like my horizontal axis to be continuous, so that it does not miss any days, and every month ends up taking up the same amount of horizontal space. (This question is similar to the unanswered question here, but I'd rather not generate a table of all the days in the last x number of years just to get a smooth plot!)

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  • Silverlight Cream for April 17, 2010 -- #839

    - by Dave Campbell
    In this Issue: ITLackey, SilverLaw, Max Paulousky, Alex Yakhnin, Paul Sheriff, Douglas, Jeremy Likness, Tomasz Janczuk, Anoop Madhusudanan, Adam Kinney, and Ashish Shetty. Shoutout: If you haven't already seen it, CrocusGirl did a great job of summarizing Day 2 of DevConnections with her Silverlight 4 Launch Notes From SilverlightCream.com: RIA Services - IIS6 Virtual Directory Deployment ITLackey has a post up building on his previous post on Windows Authentication with RIA Services and discusses deploying to an IIS Virtual Directory. How To: Determine ChildWindow Position At Runtime - Silverlight 3 SilverLaw has a post up about determining the position of a ChildWindow at run-time, for example after the user moves it. Modularity in Silverlight Applications - An Issue With ModuleInitializeException – Part 2 Max Paulousky has part 2 of his series up on Modularity in Silverlight... he discusses using XAML as a catalog and registering modules at runtime, and compares to WPF. Creating LINQ Data Provider for WP7 (Part 1) Alex Yakhnin has a first cut at a LINQ Data Provider for WP7 ... I was expecting this to hit pretty soon, because we're all going to want it... check out the code and d/l the project. Synchronize Data between a Silverlight ListBox and a User Control Paul Sheriff demonstrates databinding in XAML between local data in a ListBox and a UserControl. The beginnings of Silverlight development with Expression Blend Douglas has a good post up on beginning your Silverlight development with Expression Blend. He covers a lot of ground in this post. Converting Silverlight 3 to Silverlight 4 Jeremy Likness has a video up demonstrating converting Silverlight 3 to Silverlight 4 with download links and also using commanding on buttons. Debugging WCF RIA Services with WCF traces Tomasz Janczuk has a post up discussing the use of WCF RIA Services traces to help diagnose and debug problems in a deployed service. Bing Maps + oData + Windows Phone 7 - Nerd Dinner Client For Windows Phone 7 Check out what Anoop Madhusudanan has provided... Nerd Dinner for WP7, including OData and BingMaps... just very cool! A few cool new features added in Expression Blend 4 RC Adam Kinney announced the availability of the new Expression Blend and highlights some of the new features... like MakeLayoutPath... FTW! Of Crashing and Sometimes Burning Ashish Shetty has a discourse posted about where the causes of errors might come from, what to expect from the platform, where to find crash dumps, and links to more reading. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Back from the OData Roadshow

    - by Fabrice Marguerie
    I'm just back from the OData Roadshow with Douglas Purdy and Jonathan Carter. Paris was the last location of seven cities around the world.If there was something you wanted to know about OData, that was the place to be!These guys gave a great tour around OData. I learned things I didn't know about OData and I was able to give a demo of Sesame to the audience.More ideas and use cases popping-up!

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  • Total Solar Eclipse 13/November/2012

    - by TATWORTH
    On the 13/November/2012 there will be a total Solar Eclipse. The only land from which this will be visible is the northern part of Australia. Details of the Eclipse are at http://eclipse.gsfc.nasa.gov/SEmono/TSE2012/TSE2012.htmlCairns WEBCAM http://www.eclipsecairns.com/Wikipedia Entry http://en.wikipedia.org/wiki/Solar_eclipse_of_November_13,_2012Panasonic see  https://www.facebook.com/PanasonicEclipseLive?ref=stream?Main location channel from Sheraton Mirage Port Douglas Resort. http://www.ustream.tv/channel/panasonic-eclipse-live-by-solar-power-1 ?Second location channel from Fitzroy Islandhttp://www.ustream.tv/channel/panasonic-eclipse-live-by-solar-power-2

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  • The 2013 PASS Summit - Day 2

    - by AllenMWhite
    Good morning! It's Day 2 of the PASS Summit 2013 and it should be a busy one. Douglas McDowell, EVP Finance of PASS opened up the keynote to welcome people and talked about the financial status of the organization. Last year's Business Analytics Conference left the organization $100,000 ahead, and he went on to show the overall financial health, which is very good at this point. Bill Graziano came out to thank Doug, Rob Farley and Rushabh Mehta for their service on the board, as they step down from...(read more)

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  • Blogging from the PASS Summit : Nov. 8th keynote

    - by AaronBertrand
    Douglas McDowell talks about day 1, the video montage featuring folks here from all over the world, and the fiscal year. The important point I took from this is that PASS is a non-profit committed to investing its revenue back into the community. They are hiring another full-time community evangelist, adding IT resources for online resources like the SQL Saturday site, and further expanding global efforts. He introduces the new board members: Wendy Pastrick, James Rowland-Jones, and Sri Sridharan....(read more)

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  • Why avoid increment ("++") and decrement ("--") operators in JavaScript?

    - by artlung
    I'm a big fan of Douglas Crockford's writing on JavaScript, particularly his book JavaScript: The Good Parts. It's made me a better JavaScript programmer and a better programmer in general. One of his tips for his jslint tool is this : ++ and -- The ++ (increment) and -- (decrement) operators have been known to contribute to bad code by encouraging excessive trickiness. They are second only to faulty architecture in enabling to viruses and other security menaces. There is a plusplus option that prohibits the use of these operators. This has always struck my gut as "yes, that makes sense," but has annoyed me when I've needed a looping condition and can't figure out a better way to control the loop than a while( a < 10 )do { a++ } or for (var i=0;i<10;i++) { } and use jslint. It's challenged me to write it differently. I also know in the distant past using things, in say PHP like $foo[$bar++] has gotten me in trouble with off-by-one errors. Are there C-like languages or other languages with similarities that that lack the "++" and "--" syntax or handle it differently? Are there other rationales for avoiding "++" and "--" that I might be missing? UPDATE -- April 9, 2010: In the video Crockford on JavaScript -- Part 5: The End of All Things, Douglas Crockford addresses the ++ issue more directly and with more detail. It appears at 1:09:00 in the timeline. Worth a watch.

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  • West Palm Beach Developers&rsquo; Group June 2013 Meeting Recap &ndash; ASP.NET Web API and Web Sockets with Shervin Shakibi

    - by Sam Abraham
    Originally posted on: http://geekswithblogs.net/wildturtle/archive/2013/07/02/west-palm-beach-developersrsquo-group-june-2013-meeting-recap-ndash.aspxOur West Palm Beach Developers’ Group June 2013 meeting featured Shervin Shakibi, Microsoft Regional Director and Certified Trainer. Shervin spoke on the ASP.NET Web API and Web Sockets, two new features shipped along with ASP.NET MVC4. Talk was simply awesome and very interactive as Shervin answered many audience questions. Our event was sponsored by Steven Douglas Associates and hosted by PC Professor. Below are some photos of our event (Pardon my flash malfunction):   Shervin Presenting on the Web API A partial view of the standing-room only meeting.

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  • OData where art thou?

    - by Brian
    Douglas Purdy explains. I think the best part will be the governmental aspect. All public record should be available in a way that’s easy to query IMHO. From the article: Many of us at Microsoft believe the OData protocol can help usher in a more open and programmable Web by creating a common funnel to expose rich data, thereby creating a world of customized consumer mash-ups; a world where government data is transparent and accessible to any citizen; a world where you can ask a question and know, “There’s a feed for that.” Do check out www.odata.org, and while you’re at it, check out codename Dallas. For all those government IT workers out there, consider the savings. No need to pay someone to format the data for a specific department or constituent. Just put it online and point them there.

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  • How Does AutoPatch Handle Shared E-Business Suite Products?

    - by Steven Chan
    Space... is big. Really big. You just won't believe how vastly hugely mindbogglingly big it is.~ Douglas AdamsDouglas Adams could have been talking about the E-Business Suite.  Depending upon whom you ask (and how you count them), there are between 200 to 240 products in Oracle E-Business Suite.  The products that make up Oracle E-Business Suite are tightly integrated. Some of these products are known as shared or dependent products. Installed and registered automatically by Rapid Install, such products depend on components from other products for full functionality.For example:General Ledger (GL) depends on Application Object Library (FND) and Oracle Receivables (AR)Inventory (INV) depends on FND and GLReceivables (AR) depends on FND, INV, and GLIt can sometimes be challenging to craft a patching strategy for these types of product dependencies.  To help you with that, our Applications Database (AD) team has recently published a new document that describes the actions AutoPatch takes with shared Oracle E-Business Suite products:Patching Shared Oracle E-Business Suite Products (Note 1069099.1)

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  • Books and stories on programming culture, specifically in the 80's / early 90's

    - by Ivo van der Wijk
    I've enjoyed a number of (fiction/non-fiction books) about hacker culture and running a software business in the 80's, 90's. For some reason things seemed so much more exciting back then. Examples are: Microserfs (Douglas Coupland) Accidental Empires (Robert X. Cringely Almost Pefect (W.E. Peterson, online!) Coders at Work (Peter Seibel) Today I'm an entrepeneur and programmer. Back in the 80's a I was a young geek hacking DOS TSR's and coding GWBasic / QBasic. In the 90's I was a C.S. university student, experiencing the rise of the Internet world wide. When reading these books running a software business seemed so much more fun than it is nowadays. Things used to be so much simpler, opportunities seemed to be everywhere and the startups seemed to work with much more real problems (inventing spreadsheets, writing word processors in assembly on 6 different platforms) than all our current web 2.0 social networking toys. Does anyone share these feelings? Does anyone have any good (personal) stories from back then or know of other good books to read?

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  • What are the safety benefits of a type system?

    - by vandros526
    In Javascript: The Good Parts by Douglas Crockford, he mentions in his inheritance chapter, "The other benefit of classical inheritance is that it includes the specification of a system of types. This mostly frees the programmer from having to write explicit casting operations, which is a very good thing because when casting, the safety benefits of a type system are lost." So first of all, what actually is safety? protection against data corruption, or hackers, or system malfunctions, etc? What are the safety benefits of a type system? What makes a type system different that allows it to provide these safety benefits?

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  • "PHP: Good Parts"-ish book / reference

    - by julkiewicz
    Before I had my first proper contact with Javascript I read an excellent book "Javascript: The Good Parts" by Douglas Crockford. I was hoping for something similar in case of PHP. My first thought was this book: "PHP: The Good Parts" from O'Reilly However after I read the reviews it seems it totally misses the point. I am looking for a resource that would: concentrate on known shortcommings of PHP, give concrete examples, be as exhaustive as possible I already see that things can go wrong. If you want to close this question: Please consider this, I looked through SO, and Programmers for materials. I obviously found this question: http://stackoverflow.com/questions/90924/what-is-the-best-php-programming-book It's general, mine is specific. Moreover I'm reading the top recommendation "PHP Objects, Patterns, and Practice" right now. I find it insufficient -- it doesn't address the bad practices as much as I would like it to. tl;dr My question is NOT a general PHP book request.

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  • Does MS create cross browser compatibility problems on purpose? [closed]

    - by P.Brian.Mackey
    IE does some weird **. E.G. Supporting the send() method in AJAX with no params. Poor support for XML (well IE9 I've heard things are alot better), but seriously...since MS owned such a huge market share on browsers were they intentionally dropping in problems like this and making it easy to write crap code to give the impression that competing browsers suck to the layman? Update I realize Javascript's limitations caused some of the Xcompatibility problems. I have read comments from Douglas Crockford regarding how javascript was rushed and exploded in popularity before its time...resulting in some of the issues he can't fix. I'm only concerned specifically about MS's intentions...problems they could have fixed, yet did not. Did any of you work on the IE team or know of articles discussing some details?

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  • How do I keep co-worker from writing horrible code? [closed]

    - by Drew H
    Possible Duplicate: How do I approach a coworker about his or her code quality? I can handle the for in.. without the hasOwnProperty filtering. I can handle the blatant disregard for the libraries I've used in the past and just using something else. I can even handle the functions with 25 parameters. But I can't handle this. var trips = new Array(); var flights = new Array(); var passengers = new Array(); var persons = new Array(); var requests = new Array(); I've submitted documents on code style, had code reviews, gave him Douglas Crockford's book, shown him presentations, other peoples githubs, etc. He still show the same horrible Javascript style. How else could I approach this guy? Thanks for any help.

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