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Search found 257 results on 11 pages for 'curt walker'.

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• Simple Netduino Go Tutorial Flashing RGB LEDs with a potentiometer

  - by Chris Hammond

  In case you missed the announcement on 4/4, the guys and Secret Labs, along with other members of the Netduino Community have come out with a new platform called Netduino Go . Head on over www.netduino.com for the introduction forum post . This post is how to quickly get up and running with your Netduino Go, based on Chris Walker’s getting started forum post , with some enhancements that I think will make it easier to get up and running, as Chris’ post unfortunately leaves a few things out. Hardware...(read more)

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• Video Now Live ! Oracle PartnerNetwork Satellite Event in Paris

  - by swalker

  Revivez ou découvrez l'évènement de l'OPN Satellite du 9 novembre dernier! Revoyez les meilleurs moments de cette Journée qui a réuni plus de 350 Partenaires: les séances plénières du matin et les sessions dédiées de l'après midi avec des interviews des Partenaires présents sur ce lien http://bit.ly/yEpIbn.  Filmé par Steve Walker &amp;amp;amp;lt;span id=&amp;amp;amp;quot;XinhaEditingPostion&amp;amp;amp;quot;&amp;amp;amp;gt;&amp;amp;amp;lt;/span&amp;amp;amp;gt;

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• Le premier homme bionique voit le jour : il marche, parle et respire

  Rich Walker et Matthew Godden de la Shadow Robot Co., ont dévoilé le premier homme bionique : il marche, parle et respire. C'est un Frankenstein des temps moderne qui coûte la bagatelle de 1 million de dollars ! Il est en effet composé des prothèses humaines les plus avancées :Des membres robotisés (dont celui-ci) Une tête, avec la réplique du visage d'un de ses concepteurs. Des yeux (fabriqués par Second Sight à Sylmar en Californie). Un coeur artificiel (créé par SynCardia Systems à Tucson en...

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• Video: Content Localization Preview

  In our bi-weekly team meetingCharles Nurse gave a live demo of alpha code for work being done in content localization. Exciting stuff, especially for our international audience, some of whom received their own live demo today fromShaun Walker at the Eurpoean Day of DotNetNuke!...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Open Source Developers Should Thank Apple? Did The Police Thank The Mafia?

  <b>Network World: </b>"DJ Walker-Morgan over on the Open H has a post up saying that the open source developer community should thank Apple for raising the competitive bar and in using some open source technology in its products. I say rubbish!"

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• London OSJam 0x10

  Photo credit: Dj Walker-Morgan On Thursday the 1st of April we held the Google London Open Source Jam 0x10 (that is, the 17th). The Jams are informal meet-ups...

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• How to inject AutoMapper IMappingEngine with StructureMap

  - by Jay Walker

  Most of the examples I've found for Automapper use the static Mapper object for managing type mappings. For my project, I need to inject an IMapperEngine as part of object construction using StructureMap so that we can mock the mapper in unit tests so we can't use the static mapper. I also need to support configuring AutoMapper Profiles. My question is how can I configure the StructureMap registry so that it can supply an instance of IMappingEngine when an instance of MyService is constructed. Here is the Service constructor signature: public MyService(IMappingEngine mapper, IMyRepository myRepository, ILogger logger) And here is the StructureMap Registry public class MyRegistry : StructureMap.Configuration.DSL.Registry { public MyRegistry() { For<IMyRepository>().Use<MyRepository>(); For<ILogger>().Use<Logger>(); //what to do for IMappingEngine? } } And the profile I want to load public class MyAutoMapperProfile : AutoMapper.Profile { protected override void Configure() { this.CreateMap<MyModel, MyDTO>(); } }

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• Unit testing a controller in ASP.NET MVC 2 with RedirectToAction

  - by Rob Walker

  I have a controller that implements a simple Add operation on an entity and redirects to the Details page: [HttpPost] public ActionResult Add(Thing thing) { // ... do validation, db stuff ... return this.RedirectToAction<c => c.Details(thing.Id)); } This works great (using the RedirectToAction from the MvcContrib assembly). When I'm unit testing this method I want to access the ViewData that is returned from the Details action (so I can get the newly inserted thing's primary key and prove it is now in the database). The test has: var result = controller.Add(thing); But result here is of type: System.Web.Mvc.RedirectToRouteResult (which is a System.Web.Mvc.ActionResult). It doesn't hasn't yet executed the Details method. I've tried calling ExecuteResult on the returned object passing in a mocked up ControllerContext but the framework wasn't happy with the lack of detail in the mocked object. I could try filling in the details, etc, etc but then my test code is way longer than the code I'm testing and I feel I need unit tests for the unit tests! Am I missing something in the testing philosophy? How do I test this action when I can't get at its returned state?

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• Nullable One To One Relationships with Integer Keys in LINQ-to-SQL

  - by Craig Walker

  I have two objects (Foo and Bar) that have a one-to-zero-or-one relationship between them. So, Foo has a nullable foreign key reference to Bar.ID and a (nullbusted) unique index to enforce the "1" side. Bar.ID is an int, and so Foo.BarID is a nullable int. The problem occurs in the LINQ-to-SQL DBML mapping of .NET types to SQL datatypes. Since int is not a nullable type in .NET, it gets wrapped in a Nullable<int>. However, this is not the same type as int, and so Visual Studio gives me this error message when I try to create the OneToOne Association between them: Cannot create an association "Bar_Foo". Properties do not have matching types: "ID", "BarID". Is there a way around this?

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• NSDate - GMT on iPhone

  - by Mick Walker

  I have the following code in a production application which calculates a GMT date from the date the user enters: NSDate *localDate = pickedDate; NSTimeInterval timeZoneOffset = [[NSTimeZone defaultTimeZone] secondsFromGMT]; // You could also use the systemTimeZone method NSTimeInterval gmtTimeInterval = [localDate timeIntervalSinceReferenceDate] - timeZoneOffset; NSDate *gmtDate = [NSDate dateWithTimeIntervalSinceReferenceDate:gmtTimeInterval]; The code was working fine, until the dreaded daylight savings time came into force in the UK last week. How can I convert the date into GMT whilst taking into account daylight savings?

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• Creating ViewResults outside of Controllers in ASP.NET MVC

  - by Craig Walker

  Several of my controller actions have a standard set of failure-handling behavior. In general, I want to: Load an object based on the Route Data (IDs and the like) If the Route Data does not point to a valid object (ex: through URL hacking) then inform the user of the problem and return an HTTP 404 Not Found Validate that the current user has the proper permissions on the object If the user doesn't have permission, inform the user of the problem and return an HTTP 403 Forbidden If the above is successful, then do something with that object that's action-specific (ie: render it in a view). These steps are so standardized that I want to have reusable code to implement the behavior. My current plan of attack was to have a helper method to do something like this: public static ActionResult HandleMyObject(this Controller controller, Func<MyObject,ActionResult> onSuccess) { var myObject = MyObject.LoadFrom(controller.RouteData). if ( myObject == null ) return NotFound(controller); if ( myObject.IsNotAllowed(controller.User)) return NotAllowed(controller); return onSuccess(myObject); } # NotAllowed() is pretty much the same as this public static NotFound(Controller controller){ controller.HttpContext.Response.StatusCode = 404 # NotFound.aspx is a shared view. ViewResult result = controller.View("NotFound"); return result; } The problem here is that Controller.View() is a protected method and so is not accessible from a helper. I've looked at creating a new ViewResult instance explicitly, but there's enough properties to set that I'm wary about doing so without knowing the pitfalls first. What's the best way to create a ViewResult from outside a particular Controller?

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• Translate query to NHibernate

  - by Rob Walker

  I am trying to learn NHibernate, and am having difficulty translating a SQL query into one using the criteria API. The data model has tables: Part (Id, Name, ...), Order (Id, PartId, Qty), Shipment (Id, PartId, Qty) For all the parts I want to find the total quantity ordered and the total quantity shipped. In SQL I have: select shipment.part_id, sum(shipment.quantity), sum(order.quantity) from shipment cross join order on order.part_id = shipment.part_id group by shipment.part_id Alternatively: select id, (select sum(quantity) from shipment where part_id = part.id), (select sum(quantity) from order where part_id = part.id) from part But the latter query takes over twice as long to execute. Any suggestions on how to create these queries in (fluent) NHibernate? I have all the tables mapped and loading/saving/etc the entities works fine.

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• Parse an HTTP request Authorization header with Python

  - by Kris Walker

  I need to take a header like this: Authorization: Digest qop="chap", realm="[email protected]", username="Foobear", response="6629fae49393a05397450978507c4ef1", cnonce="5ccc069c403ebaf9f0171e9517f40e41" And parse it into this using Python: {'protocol':'Digest', 'qop':'chap', 'realm':'[email protected]', 'username':'Foobear', 'response':'6629fae49393a05397450978507c4ef1', 'cnonce':'5ccc069c403ebaf9f0171e9517f40e41'} Is there a library to do this, or something I could look at for inspiration? I'm doing this on Google App Engine, and I'm not sure if the Pyparsing library is available, but maybe I could include it with my app if it is the best solution. Currently I'm creating my own MyHeaderParser object and using it with reduce() on the header string. It's working, but very fragile. Brilliant solution by nadia below: import re reg = re.compile('(\w+)[=] ?"?(\w+)"?') s = """Digest realm="stackoverflow.com", username="kixx" """ print str(dict(reg.findall(s)))

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• SQL Server: Profiling statements inside a User-Defined Function

  - by Craig Walker

  I'm trying to use SQL Server Profiler (2005) to track down some application performance problems. One of the calls being made is to a table-valued user-defined function. This function wraps a select that joins several tables together. In SQL Server Profiler, the call to the UDF is logged. However, the select that underlies the UDF isn't being logged at all. Because of this, I'm not getting useful data on which tables & indexes are being hit. I'd like to feed this info into the Database Tuning Advisor for some indexing advice. Is there any way (short of unwrapping the queries themselves) to log the tables called by UDFs in Profiler?

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• Scroll Position in a Table Body

  - by Craig Walker

  I want to implement infinite scrolling (with an AJAX-based loader) in an HTML table body. My HTML looks something like this: <table> <thead> <tr><th>Column</th></tr> </thead> <tbody> <tr><td>Row 1</td></tr> <tr><td>Row 2</td></tr> </tbody> </table> I get a scroll bar on the <tbody> like so: tbody { height:10em; /* Otherwise the tbody expands to fit all rows */ overflow:auto; } To be able to do anything when the user scrolls to the bottom, I need to be able to get the scroll position of the <tbody>. In all of the (jQuery) infinite scroll implementations I've seen (such as this one), they subtract the content height from the container height and compare it to the .scrollTop() value. Unfortunately this may not work with <tbody>, which is both the viewport and the container for the scrolled content. $("tbody").height() returns the viewable (ie: "shrunken") size, but I don't know how I can get the full (viewable + hidden) size of the table body. (FWIW, $("tbody").scrollTop() returns a "large" number when scrolled to the bottom, exactly as I would expect it to). Is there any way to accomplish this?

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• Diagramming Software for a Developer/Designer

  - by Craig Walker

  For a long time I've been looking for a good diagramming/vector-based drawing program that meets my needs as a developer. I'd like to: Draw database diagrams Draw flow charts Draw object-modeling diagrams (UML being the standard) Draw other free-form diagrams (basically boxes & arrows with the occasional clipart) Draw mockups of user interfaces and web pages EDIT: I want good-looking electronic-format diagrams that I can show to 3rd parties, not just something for my own internal use. EDIT 2: I'm also looking for Windows software, although I'm toying with the idea of switching to Mac, so a really good Mac-only product might get me to switch. Basically I need a good vector graphic program (with decent grouping, connecting lines, and ideally auto-routing). I'd prefer a diagramming tool that can also be used for drawing (for the UI mockups) rather than a drawing tool that can also be used for diagrams. I've tried Visio on several occasions, and every time I've been disappointed. The interface always seems to get in my way at some point. It's pretty close to what I want, and the latest version (I got the trail from MS) seems to be better than previous ones in terms of usability, but I really don't want to plunk down that sort of cash for a mediocre product. I've tried Dia and Inkscape, and while initially promising and with the right price tag, I found both of them to be lacking in several ways (including some recurring bugs). I've toyed with getting Adobe Illustrator, but I've never used it before, and I have a feeling that it wouldn't handle the diagramming aspect very well, and I don't want to buy a copy just to find out it doesn't meet my needs. So far, the product that I've had the most success with is, sadly, OpenOffice Draw. It's free of course (which lowers my expectations and thus improves my view of it) and its usability is pretty good, but in the end I'd like something more suited to diagramming. I'm willing to spend real money (in the $500-$1K range) for a really good piece of software if it does everything I want it to. The front runner is of course Visio but I'm hoping for more. Does anybody have any recommendations? CONCLUSION: @dlamblin had the most informative post, but the part I gained the most from was his/her (and others) mention of OmniGraffle, not Gliffy. I gave Gliffy a try, and it seemed neet for occational use, but since it's a Flash app (note: not AJAX as dlamblin mentioned) it's still a bit of a pain to use (no keyboard shortcuts for copy/paste was pretty much a deal breaker for me). I also tried SmartDraw, but it had 3-strikes-you're-out against it: The trial period was only 7 days long. It used some nonstandard (and visually jarring) GUI widget toolkit for its UI. At the very least it makes me suspicious (how do I know it will actually work & support the standard Windows features?) It crashed on me early into my trial. OmniGraffle looks like exactly what I want... except that it's Mac-only (so I couldn't give it a try). However, it got good reviews from my Mac-owning coworker, and I hope to try it on a friend's Mac soon. If it's good enough then I might spring for a new MacBook.

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• dataset - set parent child relations

  - by Night Walker

  Hello all I am trying to set the relations of rows in DataSet and then to show that relation in XTraaTreeList as tree with relations. | --| ----| but i get | | | I am doing this code but i get a view without any relations i get them all in one level. Any idea what i am doing wrong ? this.treeList1.BeginUpdate(); this.dataTable1.Clear(); DataRow dr = this.dataTable1.NewRow(); dr[0] = "father"; dr[1] = true; dr[2] = "ddd"; this.dataTable1.Rows.Add(dr); DataRow dr1 = this.dataTable1.NewRow(); dr1[0] = "son"; dr1[1] = true; dr1[2] = "ddd"; dr1.SetParentRow(dr); this.dataTable1.Rows.Add(dr1); DataRow dr2 = this.dataTable1.NewRow(); this.dataTable1.ParentRelations() dr2[0] = "grand son"; dr2[1] = true; dr2[2] = "ddd"; dr2.SetParentRow(dr1); this.dataTable1.Rows.Add(dr2); this.treeList1.EndUpdate();

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• Java Concurrency: CAS vs Locking

  - by Hugo Walker

  Im currently reading the Book Java Concurrency in Practice. In the Chapter 15 they are speaking about the Nonblocking algorithms and the compare-and-swap (CAS) Method. It is written that the CAS perform much better than the Locking Methods. I want to ask the people which already worked with both of this concepts and would like to hear when you are preferring which of these concept? Is it really so much faster? Personally for me the usage of Locks is much clearer and easier to understand and maybe even better to maintain. (Please correct me if I am wrong). Should we really focus creating our concurrent code related on CAS than Locks to get a better performance boost or is sustainability a higher thing? I know there is maybe not a strict rule, when to use what. But I just would like to hear some opinions, experiences with the new concept of CAS.

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• Testing sample code in python modules

  - by Andrew Walker

  I'm in the process of writing a python module that includes some samples. These samples aren't unit-tests, and they are too long and complex to be doctests. I'm interested in best practices for automatically checking that these samples run. My current project layout is pretty standard, except that there is an extra top level makefile that has build, install, unittest, coverage and profile targets, that delegate responsibility to setup.py and nose as required. projectname/ Makefile README setup.py samples/ foo-sample foobar-sample projectname/ __init__.py foo.py bar.py tests/ test-foo.py test-bar.py I've considered adding a sampletest module, or adding nose.tools.istest decorators to the entry-point functions of the samples, but for a small number of samples, these solutions sound a bit ugly. This question is similar to http://stackoverflow.com/questions/301365/automatically-unit-test-example-code, but I assume python best practices will differ from C#

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• IE9 syntax on jquery crossbrowser with jsonp and FF, Chrome

  - by Andrew Walker

  I have the following code and i have a problem in ensuring part of it is used when a IE browser is used, and remove it when any other browser is used: $.ajax({ url: 'http://mapit.mysociety.org/areas/'+ulo, type: 'GET', cache: false, crossDomain: true, dataType: 'jsonp', success: function(response) { This works fine in IE9 because I have put the dataType as jsonp. But this will not work on Chrome or FF. So I need to remove the dataType. I tried this: <!--[IF IE]> dataType: 'jsonp', <![endif]--> But it did not work. It's worth noting, it does not need the dataType set when in FF or Chrome as it's json. Whats the correct syntax to have this work ? Thanks Andrew

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• Source Control - XCode - Visual Studio 2005/2008 / 2010

  - by Mick Walker

  My apologies if this has been asked before, I wasnt quite sure if this question should be asked on a programming forum, as it more relates to programming environment than a particular technology, so please accept my (double) appologies if I am posting this in the wrong place, my logic in this case was if it effects the code I write, then this is the place for it. At home, I do a lot of my development on a Mac Pro, I do development for the Mac, iPhone and Windows on this machine (Xcode & Visual Studio - (multiple versions installed in bootcamp, but generally I run it via Parallels)). When visiting a client, I have a similar setup, but on my MacBook Pro. What I want is a source control solution to install on the Mac Pro, that will support both XCode and multiple versions of visual studio, so that when I visit a client, I can simply grab the latest copy from source control via the MacBook Pro. Whilst visiting the client, he / she may suggest changes, and minor ones I would tend to make on site, so I need the ability to merge any modified code back into the trunk of the project / solution when I return home. At the moment, I am using no source control at all, and rely on simply coping folders and overwriting them when I return from a client- thats my 'merge'!!! I was wondering if anyone had any ideas of a source provider I could use, which would support both Windows and Mac development environments, and is cheap (free would be better).

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• Debugging SQL Server Slowness: Same Database, Different Servers

  - by Craig Walker

  For a while now we've been having anecdotal slowness on our newly-minted (VMWare-based) SQL Server 2005 database servers. Recently the problem has come to a head and I've started looking for the root cause of the issue. Here's the weird part: on the stored procedure that I'm using as a performance test case, I get a 30x difference in the execution speed depending on which DB server I run it on. This is using the same database (mdf) and log (ldf) files, detached, copied, and reattached from the slow server to the fast one. This doesn't appear to be a (virtualized) hardware issue: he slow server has 4x the CPU capacity and 2x the memory as the fast one. As best as I can tell, the problem lies in the environment/configuration of the servers (either operating system or SQL Server installation). However, I've checked a bunch of variables (SQL Server config options, running services, disk fragmentation) and found nothing that has made a difference in testing. What things should I be looking at? What tools can I use to investigate why this is happening?

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• LINQ-to-SQL IN/Contains() for Nullable<T>

  - by Craig Walker

  I want to generate this SQL statement in LINQ: select * from Foo where Value in ( 1, 2, 3 ) The tricky bit seems to be that Value is a column that allows nulls. The equivalent LINQ code would seem to be: IEnumerable<Foo> foos = MyDataContext.Foos; IEnumerable<int> values = GetMyValues(); var myFoos = from foo in foos where values.Contains(foo.Value) select foo; This, of course, doesn't compile, since foo.Value is an int? and values is typed to int. I've tried this: IEnumerable<Foo> foos = MyDataContext.Foos; IEnumerable<int> values = GetMyValues(); IEnumerable<int?> nullables = values.Select( value => new Nullable<int>(value)); var myFoos = from foo in foos where nullables.Contains(foo.Value) select foo; ...and this: IEnumerable<Foo> foos = MyDataContext.Foos; IEnumerable<int> values = GetMyValues(); var myFoos = from foo in foos where values.Contains(foo.Value.Value) select foo; Both of these versions give me the results I expect, but they do not generate the SQL I want. It appears that they're generating full-table results and then doing the Contains() filtering in-memory (ie: in plain LINQ, without -to-SQL); there's no IN clause in the DataContext log. Is there a way to generate a SQL IN for Nullable types?

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• Intersections of 3D polygons in python

  - by Andrew Walker

  Are there any open source tools or libraries (ideally in python) that are available for performing lots of intersections with 3D geometry read from an ESRI shapefile? Most of the tests will be simple line segments vs polygons. I've looked into OGR 1.7.1 / GEOS 3.2.0, and whilst it loads the data correctly, the resulting intersections aren't correct, and most of the other tools available seem to build on this work. Whilst CGAL would have been an alternative, it's license isn't suitable. The Boost generic geometry library looks fantastic, but the api is huge, and doesn't seem to support wkt or wkb readers out of the box.

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• IWshShortcut Target Resolution in Windows 7

  - by Dan Walker

  I've got some code to read shortcuts using the Windows Script Host, but it appears to have a problem in Windows 7. When reading shortcuts, if there is an environment variable in the target path, it resolves to the wrong drive. For example, the shortcut to Notepad resolves to D:\Windows\system32\notepad.exe instead of C:\Windows\system32\notepad.exe. The problem is not with my computer's settings, because the shortcut works just fine, and when looking at the value for %SystemRoot%, it shows C:\Windows. Any ideas as to what could be the problem, or alternatively, what a different method of reading shortcuts would be? Thanks, Dan

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