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• Are R&D mini-projects a good activity for interns?

  - by dukeofgaming

  I'm going to be in charge of hiring some interns for our software department soon (automotive infotainment systems) and I'm designing an internship program. The main productive activity "menu" I'm planning for them consists of: Verification testing Writing Unit Tests (automated, with an xUnit-compliant framework [several languages in our projects]) Documenting Code Updating wiki Updating diagrams & design docs Helping with low priority tickets (supervised/mentored) Hunting down & cleaning compiler/run-time warnings Refactoring/cleaning code against our coding standards But I also have this idea that having them do small R&D projects would be good to test their talent and get them to have fun. These mini-projects would be: Experimental implementations & optimizations Proof of concept implementations for new technologies Small papers (~2-5 pages) doing formal research on the previous two points Apps (from a mini-project pool) These kinds of projects would be pre-defined and very concrete, although new ideas from the interns themselves would be very welcome. Even if a project is too big or is abandoned, the idea would also be to lay the ground work so they can be retaken by another intern or intern team. While I think this is good in concept, I don't know if it could be good in practice, as obviously this would diminish their productivity on "real work" (work with immediate value to the company), but I think it could help bring aboard very bright people and get them to want to stay in the future (which, I think, is the end goal for any internship program). My question here is if these activities are too open ended or difficult for the average intern to accomplish and if R&D is an efficient use of an interns time or if it makes more sense for to assign project work to interns instead.

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• How to add a new developer to the team

  - by lortabac

  I run a small company composed of only 2 developers. For one of our clients we are building a very big application, whose development has gone on for 1.5 years. Now this client has found an important sponsorship, and they are organizing some events related to this project, so we have a deadline in 2 months and we can't miss it. We are thinking of adding a new developer to the team, and I am wondering what we can do to help his integration. This is the situation: We are approaching the threshhold of Brooks's law, the point when adding new developers will be counter-productive. The application is relatively well designed, but the implementation is chaotic in some points (especially older code). There are unit tests only for more recent code. When this project started, we didn't have the habit of doing tests. Documentation and comments are incomplete. The application is both large and complex. The client has written down almost every detail about his project, in a very clear and "programmer-friendly" way. Is it a good idea to add a person now? If so, what can we do in order to help the new developer integrate into the team?

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• TDD with SQL and data manipulation functions

  - by Xophmeister

  While I'm a professional programmer, I've never been formally trained in software engineering. As I'm frequently visiting here and SO, I've noticed a trend for writing unit tests whenever possible and, as my software gets more complex and sophisticated, I see automated testing as a good idea in aiding debugging. However, most of my work involves writing complex SQL and then processing the output in some way. How would you write a test to ensure your SQL was returning the correct data, for example? Then, say if the data wasn't under your control (e.g., that of a 3rd party system), how can you efficiently test your processing routines without having to hand write reams of dummy data? The best solution I can think of is making views of the data that, together, cover most cases. I can then join those views with my SQL to see if it's returning the correct records and manually process the views to see if my functions, etc. are doing what they're supposed to. Still, it seems excessive and flakey; particularly finding data to test against...

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• Project freezed - what should I leave to the people after me?

  - by Maistora

  So the project I've been working on is now going to be freezed for unknown period of time. May be when the project unfreezes it won't be assigned to me or anybody of the current team. Actually we did also inherit the project after it had been freezed but there was nothing left by the team before us to help us understand even the basic needs of the project, so plenty of time passed by until we got to know the project well. My question is what do you think we should do to help people after us to best understand the needs of the project, what we have done, why we've done it, etc. I am open to other ideas of why should we leave some tracks to the others that will work on this project also. Some steps we already have taken: technical documentation (not full but at least there is some); source-control system history; estimations on which parts of the project need improvement and why we think so; bunch of unit tests. What do you think of what we've already prepared and what else could we do?

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• Visual Studio 2010 Service Pack 1 Released

  - by krislankford

  The VS 2010 SP 1 release was simultaneous to the release of TFS 2010 SP1 and includes support for the Project Server Integration Feature Pack and updates to .NET Framework 4.0. The complete Visual Studio SP1 list including Test and Lab Manager: http://support.microsoft.com/kb/983509 The release addresses some of the most requested features from customers of Visual Studio 2010 like better help support IntelliTrace support for 64bit and SharePoint Silverlight 4 Tools in the box unit testing support on .NET 3.5 a new performance wizard for Silverlight Another major addition is the announcement of Unlimited Load Testing for Visual Studio 2010 Ultimate with MSDN Subscribers! The benefits of Visual Studio 2010 Load Test Feature Pack and useful links: Improved Overall Software Quality through Early Lifecycle Performance Testing: Lets you stress test your application early and throughout its development lifecycle with realistically modeled simulated load. By integrating performance validations early into your applications, you can ensure that your solution copes with real-world demands and behaves in a predictable manner, effectively increasing overall software quality. Higher Productivity and Reduced TCO with the Ability to Scale without Incremental Costs: Development teams no longer have to purchase Visual Studio Load Test Virtual User Pack 2010. Download the Visual Studio 2010 Load Test Feature Pack Deployment Guide Get started with stress and performance testing with Visual Studio 2010 Ultimate: Quality Solutions Best Practice: Enabling Performance and Stress Testing throughout the Application Lifecycle Hands-On-Lab: Introduction to Load Testing with ASP.NET Profile in Visual Studio 2010 How-Do-I videos: Use ASP.NET Profiler in Load Tests Use Network Emulation in Load Tests VHD/VPC walkthrough: Getting Started with Load and Performance Testing Best Practice guidance: Visual Studio Performance Testing Quick Reference Guide

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• Interpolation between two 3D points?

  - by meds

  I'm working with some splines which define a path a character follows (you can see a gameplay video here to get a better understanding of what's going on: http://www.youtube.com/watch?v=BndobjOiZ6g). Basically the characters 'forward' look direction is set to the 'forward' direction of the spline and when players tilt their phone left and right the character is strafed along its 'right' coordinate. The issue with this is (rather obviously) in performance, interpolating over a spline to find the nearest position and tangent relative to the player is an incredibly costly operation. To get by this I cache a finite number of positions in what I call 'SplineDetails', the class is as follows: public class SplineDetails { public SplineDetails() { Forward = Vector3.forward; Position = Vector3.one * float.MaxValue; Alpha = -1; } public float Alpha; // [0,1] measured along length of spline where 0 is the initial point and 1 is the end point of the spline public Vector3 Position; // the point of the spline at this alpha public Vector3 Forward; // the forward tangent of the spline at this alpha } I populate this with say 30 coordinates and I can give a rough estimate of a coordinate and 'forward' based on a position past in. It's not as accurate but it's much faster. But now I'd like to make the system work better by estimating positions and 'forward' directions by interpolating between two of the cached points though I'm stuck trying to figure out some logic. My first problem is, how can I determine between which two points the object is? Given each point can be placed at different intervals along the spline it could mean that two points in front or behind the object can be closer to the object. The other problem is to figure out the proportion between the two paths it's between, i.e. if there is a point a at coordinate (0,0,0) and point b at coordinate (1,0,0) if the object is at position (0.5,0,0) then the result it should give is '0.5' (as it is equal distance away from point a and point b). That's a simple example, but what if the object is at coordinate (0.5,3,0) for example?

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• Changes to the LINQ-to-StreamInsight Dialect

  - by Roman Schindlauer

  In previous versions of StreamInsight (1.0 through 2.0), CepStream<> represents temporal streams of many varieties: Streams with ‘open’ inputs (e.g., those defined and composed over CepStream<T>.Create(string streamName) Streams with ‘partially bound’ inputs (e.g., those defined and composed over CepStream<T>.Create(Type adapterFactory, …)) Streams with fully bound inputs (e.g., those defined and composed over To*Stream – sequences or DQC) The stream may be embedded (where Server.Create is used) The stream may be remote (where Server.Connect is used) When adding support for new programming primitives in StreamInsight 2.1, we faced a choice: Add a fourth variety (use CepStream<> to represent streams that are bound the new programming model constructs), or introduce a separate type that represents temporal streams in the new user model. We opted for the latter. Introducing a new type has the effect of reducing the number of (confusing) runtime failures due to inappropriate uses of CepStream<> instances in the incorrect context. The new types are: IStreamable<>, which logically represents a temporal stream. IQStreamable<> : IStreamable<>, which represents a queryable temporal stream. Its relationship to IStreamable<> is analogous to the relationship of IQueryable<> to IEnumerable<>. The developer can compose temporal queries over remote stream sources using this type. The syntax of temporal queries composed over IQStreamable<> is mostly consistent with the syntax of our existing CepStream<>-based LINQ provider. However, we have taken the opportunity to refine certain aspects of the language surface. Differences are outlined below. Because 2.1 introduces new types to represent temporal queries, the changes outlined in this post do no impact existing StreamInsight applications using the existing types! SelectMany StreamInsight does not support the SelectMany operator in its usual form (which is analogous to SQL’s “CROSS APPLY” operator): static IEnumerable<R> SelectMany<T, R>(this IEnumerable<T> source, Func<T, IEnumerable<R>> collectionSelector) It instead uses SelectMany as a convenient syntactic representation of an inner join. The parameter to the selector function is thus unavailable. Because the parameter isn’t supported, its type in StreamInsight 1.0 – 2.0 wasn’t carefully scrutinized. Unfortunately, the type chosen for the parameter is nonsensical to LINQ programmers: static CepStream<R> SelectMany<T, R>(this CepStream<T> source, Expression<Func<CepStream<T>, CepStream<R>>> streamSelector) Using Unit as the type for the parameter accurately reflects the StreamInsight’s capabilities: static IQStreamable<R> SelectMany<T, R>(this IQStreamable<T> source, Expression<Func<Unit, IQStreamable<R>>> streamSelector) For queries that succeed – that is, queries that do not reference the stream selector parameter – there is no difference between the code written for the two overloads: from x in xs from y in ys select f(x, y) Top-K The Take operator used in StreamInsight causes confusion for LINQ programmers because it is applied to the (unbounded) stream rather than the (bounded) window, suggesting that the query as a whole will return k rows: (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) The use of SelectMany is also unfortunate in this context because it implies the availability of the window parameter within the remainder of the comprehension. The following compiles but fails at runtime: (from win in xs.SnapshotWindow() from x in win orderby x.A select win).Take(k) The Take operator in 2.1 is applied to the window rather than the stream: Before After (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) from win in xs.SnapshotWindow() from b in     (from x in win     orderby x.A     select x.B).Take(k) select b Multicast We are introducing an explicit multicast operator in order to preserve expression identity, which is important given the semantics about moving code to and from StreamInsight. This also better matches existing LINQ dialects, such as Reactive. This pattern enables expressing multicasting in two ways: Implicit Explicit var ys = from x in xs          where x.A > 1          select x; var zs = from y1 in ys          from y2 in ys.ShiftEventTime(_ => TimeSpan.FromSeconds(1))          select y1 + y2; var ys = from x in xs          where x.A > 1          select x; var zs = ys.Multicast(ys1 =>     from y1 in ys1     from y2 in ys1.ShiftEventTime(_ => TimeSpan.FromSeconds(1))     select y1 + y2; Notice the product translates an expression using implicit multicast into an expression using the explicit multicast operator. The user does not see this translation. Default window policies Only default window policies are supported in the new surface. Other policies can be simulated by using AlterEventLifetime. Before After xs.SnapshotWindow(     WindowInputPolicy.ClipToWindow,     SnapshotWindowInputPolicy.Clip) xs.SnapshotWindow() xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.PointAlignToWindowEnd) xs.TumblingWindow(     TimeSpan.FromSeconds(1)) xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.ClipToWindowEnd) Not supported … LeftAntiJoin Representation of LASJ as a correlated sub-query in the LINQ surface is problematic as the StreamInsight engine does not support correlated sub-queries (see discussion of SelectMany). The current syntax requires the introduction of an otherwise unsupported ‘IsEmpty()’ operator. As a result, the pattern is not discoverable and implies capabilities not present in the server. The direct representation of LASJ is used instead: Before After from x in xs where     (from y in ys     where x.A > y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, (x, y) => x.A > y.B) from x in xs where     (from y in ys     where x.A == y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, x => x.A, y => y.B) ApplyWithUnion The ApplyWithUnion methods have been deprecated since their signatures are redundant given the standard SelectMany overloads: Before After xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count()) xs.GroupBy(x => x.A).SelectMany(     gs =>     from win in gs.SnapshotWindow()     select win.Count()) xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count(), r => new { r.Key, Count = r.Payload }) from x in xs group x by x.A into gs from win in gs.SnapshotWindow() select new { gs.Key, Count = win.Count() } Alternate UDO syntax The representation of UDOs in the StreamInsight LINQ dialect confuses cardinalities. Based on the semantics of user-defined operators in StreamInsight, one would expect to construct queries in the following form: from win in xs.SnapshotWindow() from y in MyUdo(win) select y Instead, the UDO proxy method is referenced within a projection, and the (many) results returned by the user code are automatically flattened into a stream: from win in xs.SnapshotWindow() select MyUdo(win) The “many-or-one” confusion is exemplified by the following example that compiles but fails at runtime: from win in xs.SnapshotWindow() select MyUdo(win) + win.Count() The above query must fail because the UDO is in fact returning many values per window while the count aggregate is returning one. Original syntax New alternate syntax from win in xs.SnapshotWindow() select win.UdoProxy(1) from win in xs.SnapshotWindow() from y in win.UserDefinedOperator(() => new Udo(1)) select y -or- from win in xs.SnapshotWindow() from y in win.UdoMacro(1) select y Notice that this formulation also sidesteps the dynamic type pitfalls of the existing “proxy method” approach to UDOs, in which the type of the UDO implementation (TInput, TOuput) and the type of its constructor arguments (TConfig) need to align in a precise and non-obvious way with the argument and return types for the corresponding proxy method. UDSO syntax UDSO currently leverages the DataContractSerializer to clone initial state for logical instances of the user operator. Initial state will instead be described by an expression in the new LINQ surface. Before After xs.Scan(new Udso()) xs.Scan(() => new Udso()) Name changes ShiftEventTime => AlterEventStartTime: The alter event lifetime overload taking a new start time value has been renamed. CountByStartTimeWindow => CountWindow

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• What can be the cause of new bugs appearing somewhere else when a known bug is solved?

  - by MainMa

  During a discussion, one of my colleagues told that he has some difficulties with his current project while trying to solve bugs. "When I solve one bug, something else stops working elsewhere", he said. I started to think about how this could happen, but can't figure it out. I have sometimes similar problems when I am too tired/sleepy to do the work correctly and to have an overall view of the part of the code I was working on. Here, the problem seems to be for a few days or weeks, and is not related to the focus of my colleague. I can also imagine this problem arising on a very large project, very badly managed, where teammates don't have any idea of who does what, and what effect on other's work can have a change they are doing. This is not the case here neither: it's a rather small project with only one developer. It can also be an issue with old, badly maintained and never documented codebase, where the only developers who can really imagine the consequences of a change had left the company years ago. Here, the project just started, and the developer doesn't use anyone's codebase. So what can be the cause of such issue on a fresh, small-size codebase written by a single developer who stays focused on his work? What may help? Unit tests (there are none)? Proper architecture (I'm pretty sure that the codebase has no architecture at all and was written with no preliminary thinking), requiring the whole refactoring? Pair programming? Something else?

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• Tips about how to spread Object Oriented practices

  - by Augusto

  I work for a medium company that has around 250 developers. Unfortunately, lots of them are stuck in a procedural way of thinking and some teams constantly deliver big Transactional Script applications, when in fact the application contains rich logic. They also fail to manage the design dependencies, and end up with services which depend on another large number of services (a clean example of Big Ball of Mud). My question is: Can you suggest how to spread this type of knowledge? I know that the surface of the problem is that these applications have a poor architecture and design. Another issue is that there are some developers who are against writing any kind of test. A few things I'm doing to change this (but I'm either failing or the change is too small are) Running presentations about design principles (SOLID, clean code, etc). Workshops about TDD and BDD. Coaching teams (this includes using sonar, findbugs, jdepend and other tools). IDE & Refactoring talks. A few things I'm thinking to do in the future (but I'm concern that they might not be good) Form a team of OO evangelists, who disseminate an OO way of thinking in differet teams (these people would need to change teams every few months). Running design review sessions, to criticise the design and suggest improvements (even if the improvements are not done because of time constraints, I think this might be useful) . Something I found with the teams I coach, is that as soon as I leave them, they revert back to the old practices. I know I don't spend a lot of time with them, usually just one month. So whatever I'm doing, it doesn't stick. I'm sorry this question is spattered with frustration, but the alterative to write this was to hit my head on the wall until I pass out.

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• design in agile process

  - by ying

  Recently I had an interview with dev team in a company. The team uses agile + TDD. The code exercise implements a video rental store which generates statement to calc total rental fee for each type of video (new release, children, etc) for a customer. The existing code use object like: Statement to generate statement and calc fee where big switch statement sits to use enum to determine how to calc rental fee customer holds a list of rentals movie base class and derived class for each type of movie (NEW, CHILDREN, ACTION, etc) The code originally doesn't compile as the owner was assumed to be hit by a bus. So here is what I did: outlined the improvement over object model to have better responsibility for each class. use strategy pattern to replace switch statement and weave them in config But the team says it's waste of time because there is no requirement for it and UAT test suite works and is the only guideline goes into architecture decision. The underlying story is just to get pricing feature out and not saying anything about how to do it. So the discussion is focused on why should time be spent on refactor the switch statement. In my understanding, agile methodology doesn't mean zero design upfront and such code smell should be avoided at the beginning. Also any unit/UAT test suite won't detect such code smell, otherwise sonar, findbugs won't exist. Here I want to ask: is there such a thing called agile design in the agile methodology? Just like agile documentation. how to define agile design upfront? how to know enough is enough? In my understanding, ballpark architecture and data contract among components should be defined before/when starting project, not the details. Am I right? anyone can explain what the team is really looking for in this kind of setup? is it design aspect or agile aspect? how to implement minimum viable product concept in the agile process in the real world project? Is it must that you feel embarrassed to be MVP?

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• Best Architecture for ASP.NET WebForms Application

  - by stack man

  I have written an ASP.NET WebForms portal for a client. The project has kind of evolved rather than being properly planned and structured from the beginning. Consequently, all the code is mashed together within the same project and without any layers. The client is now happy with the functionality, so I would like to refactor the code such that I will be confident about releasing the project. As there seems to be many differing ways to design the architecture, I would like some opinions about the best approach to take. FUNCTIONALITY The portal allows administrators to configure HTML templates. Other associated "partners" will be able to display these templates by adding IFrame code to their site. Within these templates, customers can register and purchase products. An API has been implemented using WCF allowing external companies to interface with the system also. An Admin section allows Administrators to configure various functionality and view reports for each partner. The system sends out invoices and email notifications to customers. CURRENT ARCHITECTURE It is currently using EF4 to read/write to the database. The EF objects are used directly within the aspx files. This has facilitated rapid development while I have been writing the site but it is probably unacceptable to keep it like that as it is tightly coupling the db with the UI. Specific business logic has been added to partial classes of the EF objects. QUESTIONS The goal of refactoring will be to make the site scalable, easily maintainable and secure. 1) What kind of architecture would be best for this? Please describe what should be in each layer, whether I should use DTO's / POCO / Active Record pattern etc. 2) Is there a robust way to auto-generate DTO's / BOs so that any future enhancements will be simple to implement despite the extra layers? 3) Would it be beneficial to convert the project from WebForms to MVC?

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• Why does working processors harder use more electrical power?

  - by GazTheDestroyer

  Back in the mists of time when I started coding, at least as far as I'm aware, processors all used a fixed amount of power. There was no such thing as a processor being "idle". These days there are all sorts of technologies for reducing power usage when the processor is not very busy, mostly by dynamically reducing the clock rate. My question is why does running at a lower clock rate use less power? My mental picture of a processor is of a reference voltage (say 5V) representing a binary 1, and 0V representing 0. Therefore I tend to think of of a constant 5V being applied across the entire chip, with the various logic gates disconnecting this voltage when "off", meaning a constant amount of power is being used. The rate at which these gates are turned on and off seems to have no relation to the power used. I have no doubt this is a hopelessly naive picture, but I am no electrical engineer. Can someone explain what's really going on with frequency scaling, and how it saves power. Are there any other ways that a processor uses more or less power depending on state? eg Does it use more power if more gates are open? How are mobile / low power processors different from their desktop cousins? Are they just simpler (less transistors?), or is there some other fundamental design difference?

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• CodePlex Daily Summary for Sunday, June 26, 2011

  CodePlex Daily Summary for Sunday, June 26, 2011Popular ReleasesDroid Builder: Droid Builder - 1.0.4194.38898: Support new type of patch package. Support plugin framework.Mosaic Project: Mosaic Alpha build 254: - Added horizontal scroll by mouse in fullscreen mode - Widgets now have fixed size - Reduced spacing between widgets - Widgets menu is scrollable by mouse now and not overlapping back button on small screens.Net Image Processor: v1.0: Initial release of the library containing the core architecture and two filters. To install, extract the library to somewhere sensible then reference as a file from your project in Visual Studio.Usage Agent: Usage Agent 9.0.8: Latest release. Changes include: - Fixes for Optus - Usage Delta statistic for BigPond - Eliminated the need for UAC prompt at every startupjQuery List DragSort: jQuery List DragSort 0.4.3: Fix item not dropping correctly on Chrome and jQuery 1.6KinectNUI: Jun 25 Alpha Release: Initial public version. No installer needed, just run the EXE.TerrariViewer: TerrariViewer v3.3 [v1.0.5 Compatible]: I have added support for all the new items in Terraria v1.0.5. I have also added the ability to put your character in hardcore mode or take them out via a simple checkbox on the stats tab. If you come across any bugs, please let me know immediately.Media Companion: MC 3.409b-1 Weekly: This weeks release is part way through a major rewrite of the TVShow code. This means that a few TV related features & functions are not fully operational at the moment. The reason for this release is so that people can see if their particular issue has been fixed during the week. Some issues may not be able to be fully checked due to the ongoing TV code refactoring. So, I would strongly suggest that you put this version into a separate folder, copy your settings folder across & test MC that...Terraria World Viewer: Version 1.5: Update June 24th Made compatible with the new tiles found in Terraria 1.0.5Kinect Earth Move: KinectEarthMove sample code: Sample code releasedThis is a sample code for Kinect for Windows SDK beta, which was demonstrated on Channel 9 Kinect for Windows SKD beta launch event on June 17 2011. Using color image and skeleton data from Kinect and user in front of Kinect can manipulate the earth between his/her hands.NetOffice - The easiest way to use Office in .NET: NetOffice Release 0.9b: Changes: - fix critical issue 262334 (AccessViolationException while using events in a COMAddin) - remove x64 Assemblies (not necessary) Includes: - Runtime Binaries and Source Code for .NET Framework:......v2.0, v3.0, v3.5, v4.0 - Tutorials in C# and VB.Net:..............................................................COM Proxy Management, Events, etc. - Examples in C# and VB.Net:............................................................Excel, Word, Outlook, PowerPoint, Access - COMAddi...MiniTwitter: 1.70: MiniTwitter 1.70 ???? ?? ????? xAuth ?? OAuth ??????? 1.70 ??????????????????????????。 ???????????????? Twitter ? Web ??????????、PIN ????????????????????。??????????????????、???????????????????????????。Total Commander SkyDrive File System Plugin (.wfx): Total Commander SkyDrive File System Plugin 0.8.7b: Total Commander SkyDrive File System Plugin version 0.8.7b. Bug fixes: - BROKEN PLUGIN by upgrading SkyDriveServiceClient version 2.0.1b. Please do not forget to express your opinion of the plugin by rating it! Donate (EUR)SkyDrive .Net API Client: SkyDrive .Net API Client 2.0.1b (RELOADED): SkyDrive .Net API Client assembly has been RELOADED in version 2.0.1b as a REAL API. It supports the followings: - Creating root and sub folders - Uploading and downloading files - Renaming and deleting folders and files Bug fixes: - BROKEN API (issue 6834) Please do not forget to express your opinion of the assembly by rating it! Donate (EUR)Mini SQL Query: Mini SQL Query v1.0.0.59794: This release includes the following enhancements: Added a Most Recently Used file list Added Row counts to the query (per tab) and table view windows Added the Command Timeout option, only valid for MSSQL for now - see options If you have no idea what this thing is make sure you check out http://pksoftware.net/MiniSqlQuery/Help/MiniSqlQueryQuickStart.docx for an introduction. PK :-]HydroDesktop - CUAHSI Hydrologic Information System Desktop Application: 1.2.591 Beta Release: 1.2.591 Beta Releasepatterns & practices: Project Silk: Project Silk Community Drop 12 - June 22, 2011: Changes from previous drop: Minor code changes. New "Introduction" chapter. New "Modularity" chapter. Updated "Architecture" chapter. Updated "Server-Side Implementation" chapter. Updated "Client Data Management and Caching" chapter. Guidance Chapters Ready for Review The Word documents for the chapters are included with the source code in addition to the CHM to help you provide feedback. The PDF is provided as a separate download for your convenience. Installation Overview To ins...DropBox Linker: DropBox Linker 1.3: Added "Get links..." dialog, that provides selective public files links copying Get links link added to tray menu as the default option Fixed URL encoding .NET Framework 4.0 Client Profile requiredDotNetNuke® Community Edition: 06.00.00 Beta: Beta 1 (Build 2300) includes many important enhancements to the user experience. The control panel has been updated for easier access to the most important features and additional forms have been adapted to the new pattern. This release also includes many bug fixes that make it more stable than previous CTP releases. Beta ForumsBlogEngine.NET: BlogEngine.NET 2.5 RC: BlogEngine.NET Hosting - Click Here! 3 Months FREE – BlogEngine.NET Hosting – Click Here! This is a Release Candidate version for BlogEngine.NET 2.5. The most current, stable version of BlogEngine.NET is version 2.0. Find out more about the BlogEngine.NET 2.5 RC here. If you want to extend or modify BlogEngine.NET, you should download the source code. To get started, be sure to check out our installation documentation. If you are upgrading from a previous version, please take a look at ...New Projects6_6_6_w_m_s_open: jwervxsdfcfcf: cfcfChairforce hackathon project: project for hackathonDot Net Nuke Ajax Modules: This is a small collection of modules I think on once in a while which intend to improve a little dnn's user experience.Gnosis Game Engine: A simple game engine for the XNA 4.0 frame work that I am working on, mostly as a learning experience. I found that XNA game engines either require you to pay or are XNA 4.0 incompatible, and so this is my solution to that problem.KA_WindowsPhone7_Samples: Sample Code for Windows Phone 7 from http://kevinashley.comKinect MIDI Controller: This tool allows you to use a Kinect Sensor as a MIDI Controller for your Digital Audio Workbench. The tool is written in C#, and uses Microsoft Kinect SDK. Mosaic Project: Mosaic is an application that brings Metro UI to your desktop by live widgets.Movie Gate: A movie database that is also able to play the movies with your favorit media player.Musical Collective: An open-source web service that enables Musicians to collaborate on songs. Written in ASP.NET MVC (C#).NcADS-MVC: Clasificados MVCPokeTD: Ein kleines 2D Pokemon Tower-Defense Spiel. Es ist in C# und XNA geschrieben.PRO-TOKOL: PRO-TOKOL Server is a Programmable Logic Controller communication driver. The project is 100% coded in .NET Managed code. So, the dll can be included in any .NET project. The project uses the Microsoft Workflow Foundation to implement the DF1 Receiver and Transmitter logic.ShumaDaf: small project for display movies info directly from file structure using mymovies.xml. program create one simple xml file and display it!Silverlight Policy Service: The windows service act as a server and listens on TCP port 943 using IPv4 and IPv6. The socket policy included in the project allows all silverlight client applications to connect to TCP ports 4502-4506.SkinObject Module Wrapper: The SkinObject Module Wrapper is a DotNetNuke module that will allow you to add any DNN SkinObject to a page dinamically as if it was a DNN Module. Without any skin modification you can now inject new SkinObjects to you pages, configure the properties and change them on the fly.SkyNet0.3: Program that one should not be able to close.Team Zero Game One: SVN for the personal project(s) of Team Zero - Game One. We are creating a free game in HTML5 canvas using the CAKE api, found here: http://code.google.com/p/cakejs/ The game is about programming a small robot to move through a maze, sneaking past guards and other obstacles, using event-based programming. We've seen a number of games that allow you to "program" a character, and thought it would be interesting to do a different take on it. The game is still in early production, and actively ...Test-Driven Scaffolding (TDS): TDS helps developers of C# function members (methods, indexers, etc.) to quickly write drivers for code under development; these can easily be converted later to NUnit tests. TDS consists of C# code that can be pasted into a new or existing project and removed when no longer needed.Usage Agent: The Usage Agent toolset is designed to help manage your ISP data usage without having to log into your ISP usage page. It can optionally monitor your network card throughput and produce reports on usage. Developed in VB.NET.

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• Balancing dependency injection with public API design

  - by kolektiv

  I've been contemplating how to balance testable design using dependency injection with providing simple fixed public API. My dilemma is: people would want to do something like var server = new Server(){ ... } and not have to worry about creating the many dependencies and graph of dependencies that a Server(,,,,,,) may have. While developing, I don't worry too much, as I use an IoC/DI framework to handle all that (I'm not using the lifecycle management aspects of any container, which would complicate things further). Now, the dependencies are unlikely to be re-implemented. Componentisation in this case is almost purely for testability (and decent design!) rather than creating seams for extension, etc. People will 99.999% of the time wish to use a default configuration. So. I could hardcode the dependencies. Don't want to do that, we lose our testing! I could provide a default constructor with hard-coded dependencies and one which takes dependencies. That's... messy, and likely to be confusing, but viable. I could make the dependency receiving constructor internal and make my unit tests a friend assembly (assuming C#), which tidies the public API but leaves a nasty hidden trap lurking for maintenance. Having two constructors which are implicitly connected rather than explicitly would be bad design in general in my book. At the moment that's about the least evil I can think of. Opinions? Wisdom?

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• for an ajax heavy web application which would be better SOAP or REST?

  - by coder

  I'm building an ajax heavy application (client-side strictly html/css/js) which will be getting all the data and using server business logic via webservices. I know REST seems to be the hot topic but I can't find any good arguments. The main argument seems to be its "light-weight". My impression so far is that wsdl/soap based services are more expressive and allow for more a more complex transfer of data. It appears that soap would be more useful in the application I'm building where the only code consuming the services will be the js downloaded in the client browser. REST on the other hand seems to have a smaller entry barrier and so can be more useful for services like twitter in allowing other developers to consume these services easily. Also, REST seems to Te better suited for simple data transfers. So in summary SOAP is useful for complex data transfer and REST is useful in simple data transfer. I'm currently under the impression that using SOAP would be best due to the complexity of the messages but perhaps there's other factors. What are your thoughts on the pros/cons of soap/rest for a heavy ajax web app?

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• Supporting and testing multiple versions of a software library in a Maven project

  - by Duncan Jones

  My company has several versions of its software in use by our customers at any one time. My job is to write bespoke Java software for the customers based on the version of software they happen to be running. I've created a Java library that performs many of the tasks I regularly require in a normal project. This is a Maven project that I deploy to our local Artifactory and pull down into other Maven projects when required. I can't decide the best way to support the range of software versions used by our customers. Typically, we have about three versions in use at any one time. They are normally backwards compatible with one another, but that cannot be guaranteed. I have considered the following options for managing this issue: Separate editions for each library version I make a separate release of my library for each version of my company software. Using some Maven cunningness I could automatically produce a tested version linked to each of the then-current company software versions. This is feasible, but not without its technical challenges. The advantage is that this would be fairly automatic and my unit tests have definitely executed against the correct software version. However, I would have to keep updating the versions supported and may end up maintaining a large collection of libraries. One supported version, but others tested I support the oldest software version and make a release against that. I then perform tests with the newer software versions to ensure it still works. I could try and make this testing automatic by having some non-deployed Maven projects that import the software library, the associated test JAR and override the company software version used. If those projects build, then the library is compatible. I could ensure these meta-projects are included in our CI server builds. I welcome comments on which approach is better or a suggestion for a different approach entirely. I'm leaning towards the second option.

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• Html 5 clock, part ii - CSS marker classes and getElementsByClassName

  - by Norgean

  The clock I made in part i displays the time in "long" - "It's a quarter to ten" (but in Norwegian). To save space, some letters are shared, "sevenineight" is four letters shorter than "seven nine eight". We only want to highlight the "correct" parts of this, for example "sevenineight". When I started programming the clock, each letter had its own unique ID, and my script would "get" each element individually, and highlight / hide each element according to some obscure logic. I quickly realized, despite being in a post surgery haze, …this is a stupid way to do it. And, to paraphrase NPH, if you find yourself doing something stupid, stop, and be awesome instead. We want an easy way to get all the items we want to highlight. Perhaps we can use the new getElementsByClassName function? Try to mark each element with a classname or two. So in "sevenineight": 's' is marked as 'h7', and the first 'n' is marked with both 'h7' and 'h9' (h for hour). <div class='h7 h9'>N</div><div class='h9'>I</div> getElementsByClassName('h9') will return the four letters of "nine". Notice that these classes are not backed by any CSS, they only appear directly in html (and are used in javascript). I have not seen classes used this way elsewhere, and have chosen to call them "marker classes" - similar to marker interfaces - until somebody comes up with a better name.

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• New CAM Editor v2.3 with Open-XDX for Open Data APIs

  - by drrwebber

  Creating actual working XML exchanges, loading data from data stores, generating XML, testing, integrating with web services and then deployment delivery takes a lot of coding and effort. Then writing the documentation, models, schema and doing naming and design rule (NDR) checks and packaging all this together (such as for NIEM IEPD use). What if there was a tool that helped you do all that easily and simply? Welcome to the new Open-XDX and the CAM Editor! Open-XDX uses code-free techniques in combination with CAM templates and visual drag and drop to rapidly design your XML exchange. Then Open-XDX will automatically generate all the SQL for you, read the database data, generate and populate the valid output XML, and filter with parameters. To complete the processing solution Open-XDX works with web services and JDBC database connections as a callable module that can be deployed plug and play with your middleware stack, all with just a few lines of Java code (about 5 actually). You can build either Query/Response or Publish/Subscribe services from existing data stores to XML literally in minutes. To see a demonstration of using Open-XDX, a MySQL data store and integrating with Oracle Web Logic server please see this short few minutes video - http://youtube.com/user/TheCameditor There is also a Quick Guide available that provides more technical insights along with a sample pack download of templates and SQL that you can try for yourself. Head on over to our project resource site to learn more, download the latest CAM Editor and see links to all the resources and materials. We look forward to seeing how the developer community is able to jump start information sharing initiatives using this new innovative approach.

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• Concurrency pattern of logger in multithreaded application

  - by Dipan Mehta

  The context: We are working on a multi-threaded (Linux-C) application that follows a pipeline model. Each module has a private thread and encapsulated objects which do processing of data; and each stage has a standard form of exchanging data with next unit. The application is free from memory leak and is threadsafe using locks at the point where they exchange data. Total number of threads is about 15- and each thread can have from 1 to 4 objects. Making about 25 - 30 odd objects which all have some critical logging to do. Most discussion I have seen about different levels as in Log4J and it's other translations. The real big questions is about how the overall logging should really happen? One approach is all local logging does fprintf to stderr. The stderr is redirected to some file. This approach is very bad when logs become too big. If all object instantiate their individual loggers - (about 30-40 of them) there will be too many files. And unlike above, one won't have the idea of true order of events. Timestamping is one possibility - but it is still a mess to collate. If there is a single global logger (singleton) pattern - it indirectly blocks so many threads while one is busy putting up logs. This is unacceptable when processing of the threads are heavy. So what should be the ideal way to structure the logging objects? What are some of the best practices in actual large scale applications? I would also love to learn from some of the real designs of large scale applications to get inspirations from!

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• How to promote an open-source project?

  - by Shehi

  First of all, I apologize if this is the wrong section of network to post this question. If it is, please feel free to move it to more appropriate location... Question: I would like to hear your ideas regarding the ways of open source projects being started and run. I have an open-source content management system project and here some questions arise: How should I act? Shall I come up with a viable pre-alpha edition with working front- and back-ends first and then announce the project publicly? Or shall I announce it right away from the scratch? As a developer I know that one should use versioning system like Git or SVN, which I do, no problems there. And the merit of unit-testing is also something to remember, which, to be frank, I am not into at all... Project management - I am a beginner in that, at best. Coding techniques and experiences such as Agile development is something I want to explore... In short, any ideas for a developer who is new to open-source world, is most welcome.

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• Modular Web App Network Architecture

  - by nairware

  Assuming that I am dealing with dedicated physical servers or VPSs, is it conceivable and does it make sense to have distinct servers setup with the following roles to host a web application? Reverse Proxy Web server Application server Database server Specific points of interest: I am confused how to even separate the web and application servers. My understanding was that such 3-tier architectures were feasible. It is unclear to me if the app server would reside directly between the web and database server, or if the web server could directly interact with the database as well. The app server could either do the computational heavy-lifting on behalf of the app server or it could do heavy-lifting plus control all of the business logic (as implied in the diagram above, thus denying the web server of direct database access). I am also unsure what role the reverse proxy (ex. nginx) could and should fulfill as a web server, given the above mentioned setup. I know that nginx has web server features. But I do not know if it makes sense to have the reverse proxy be its own VPS, given that the web server–in theory–would be separate from the app server.

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• Defining work days and work time

  - by user2553268

  I'm working on development of SMS parking software, and I'm stuck at one point for a month... I need to implement periods of payment (or work time, of a work day, if you will). Here's the problem: For an example, traffic wardens work from Monday to Saturday. From Monday to Friday, the work times are from 07:00 to 21:00, and on Saturday, the work time is from 07:00 to 14:00. The project request was, that the customer can pay parking by SMS unlimited, which I did, but didn't implement this logic. I started with making a table for this periods of payment, it consists of: dayofweek (INT, for use with mysql function DAYOFWEEK, to tell me which day in week is the current date), work_start and work_stop (DATETIME, for defining starting and ending the work day), but I'm unsure if I should use DATETIME, beacuse of the date, or should I use only TIME. The idea is this: If you send an SMS, at 20:50, Monday, it should be valid until 07:50, Tuesday (it's payed by the hour). Extending the time of payment, regarding the work time in week. Currently, it works with extending time by the hour without this rule. Really would use some help, or some ideas, I'm stuck with this for quite some time...

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• Are long methods always bad?

  - by wobbily_col

  So looking around earlier I noticed some comments about long methods being bad practice. I am not sure I always agree that long methods are bad (and would like opinions from others). For example I have some Django views that do a bit of processing of the objects before sending them to the view, a long method being 350 lines of code. I have my code written so that it deals with the paramaters - sorting / filtering the queryset, then bit by bit does some processing on the objects my query has returned. So the processing is mainly conditional aggregation, that has complex enough rules it can't easily be done in the database, so I have some variables declared outside the main loop then get altered during the loop. varaible_1 = 0 variable_2 = 0 for object in queryset : if object.condition_condition_a and variable_2 > 0 : variable 1+= 1 ..... ... . more conditions to alter the variables return queryset, and context So according to the theory I should factor out all the code into smaller methods, so That I have the view method as being maximum one page long. However having worked on various code bases in the past, I sometimes find it makes the code less readable, when you need to constantly jump from one method to the next figuring out all the parts of it, while keeping the outermost method in your head. I find that having a long method that is well formatted, you can see the logic more easily, as it isn't getting hidden away in inner methods. I could factor out the code into smaller methods, but often there is is an inner loop being used for two or three things, so it would result in more complex code, or methods that don't do one thing but two or three (alternatively I could repeat inner loops for each task, but then there will be a performance hit). So is there a case that long methods are not always bad? Is there always a case for writing methods, when they will only be used in one place?

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• When module calling gets ugly

  - by Pete

  Has this ever happened to you? You've got a suite of well designed, single-responsibility modules, covered by unit tests. In any higher-level function you code, you are (95% of the code) simply taking output from one module and passing it as input to the next. Then, you notice this higher-level function has turned into a 100+ line script with multiple responsibilities. Here is the problem. It is difficult (impossible) to test that script. At least, it seems so. Do you agree? In my current project, all of the bugs came from this script. Further detail: each script represents a unique solution, or algorithm, formed by using different modules in different ways. Question: how can you remedy this situation? Knee-jerk answer: break the script up into single-responsibility modules. Comment on knee-jerk answer: it already is! Best answer I can come up with so far: create higher-level connector objects which "wire" modules together in particular ways (take output from one module, feed it as input to another module). Thus if our script was: FooInput fooIn = new FooInput(1, 2); FooOutput fooOutput = fooModule(fooIn); Double runtimevalue = getsomething(fooOutput.whatever); BarInput barIn = new BarInput( runtimevalue, fooOutput.someOtherValue); BarOutput barOut = barModule(BarIn); It would become with a connector: FooBarConnectionAlgo fooBarConnector = new fooBarConnector(fooModule, barModule); FooInput fooIn = new FooInput(1, 2); BarOutput barOut = fooBarConnector(fooIn); So the advantage is, besides hiding some code and making things clearer, we can test FooBarConnectionAlgo. I'm sure this situation comes up a lot. What do you do?

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• Question about a simple design problem

  - by Uri

  At work I stumbled uppon a method. It made a query, and returned a String based on the result of the query, such as de ID of a customer. If the query didn't return a single customer, it'd return a null. Otherwise, it'd return a String with the ID's of them. It looked like this: String error = getOwners(); if (error != null) { throw new Exception("Can't delete, the flat is owned by: " + error); } ... Ignoring the fact that getCustomers() returns a null when it should instead return an empty String, two things are happening here. It checks if the flat is owned by someone, and then returns them. I think a more readable logic would be to do this: if (isOwned) { throw new Exception("Can't delete, the flat is owned by: " + getOwners()); } ... The problem is that the first way does with one query what I do with two queries to the database. What would be a good solution involving good design and efficiency for this?

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