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• How can I avoid team burnout?

  - by Shawn Dalma

  I work for a small web company that deals with a lot of projects, a few at any given time are development heavy for us (400-1500 hours or more) and I've been noticing developers get extremely burnt out on a project after 150 hours or so. I've been toying around with the idea of working some form of rotation/rest so when someone reaches the threshold, they at least get some time off of working on that project. Is there an industry standard approach?

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• Encouraging software engineers to track time

  - by M. Dudley

  How can I encourage my coworkers to track the time they spend resolving issues and implementing features? We have software to do this, but they just don't enter the numbers. I want the team to get better at providing project estimates by comparing our past estimates to actual time spent. I suspect that my coworkers don't see the personal benefit, since they're not often involved in project scheduling.

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• Design pattern for an ASP.NET project using Entity Framework

  - by MPelletier

  I'm building a website in ASP.NET (Web Forms) on top of an engine with business rules (which basically resides in a separate DLL), connected to a database mapped with Entity Framework (in a 3rd, separate project). I designed the Engine first, which has an Entity Framework context, and then went on to work on the website, which presents various reports. I believe I made a terrible design mistake in that the website has its own context (which sounded normal at first). I present this mockup of the engine and a report page's code behind: Engine (in separate DLL): public Engine { DatabaseEntities _engineContext; public Engine() { // Connection string and procedure managed in DB layer _engineContext = DatabaseEntities.Connect(); } public ChangeSomeEntity(SomeEntity someEntity, int newValue) { //Suppose there's some validation too, non trivial stuff SomeEntity.Value = newValue; _engineContext.SaveChanges(); } } And report: public partial class MyReport : Page { Engine _engine; DatabaseEntities _webpageContext; public MyReport() { _engine = new Engine(); _databaseContext = DatabaseEntities.Connect(); } public void ChangeSomeEntityButton_Clicked(object sender, EventArgs e) { SomeEntity someEntity; //Wrong way: //Get the entity from the webpage context someEntity = _webpageContext.SomeEntities.Single(s => s.Id == SomeEntityId); //Send the entity from _webpageContext to the engine _engine.ChangeSomeEntity(someEntity, SomeEntityNewValue); // <- oops, conflict of context //Right(?) way: //Get the entity from the engine context someEntity = _engine.GetSomeEntity(SomeEntityId); //undefined above //Send the entity from the engine's context to the engine _engine.ChangeSomeEntity(someEntity, SomeEntityNewValue); // <- oops, conflict of context } } Because the webpage has its own context, giving the Engine an entity from a different context will cause an error. I happen to know not to do that, to only give the Engine entities from its own context. But this is a very error-prone design. I see the error of my ways now. I just don't know the right path. I'm considering: Creating the connection in the Engine and passing it off to the webpage. Always instantiate an Engine, make its context accessible from a property, sharing it. Possible problems: other conflicts? Slow? Concurrency issues if I want to expand to AJAX? Creating the connection from the webpage and passing it off to the Engine (I believe that's dependency injection?) Only talking through ID's. Creates redundancy, not always practical, sounds archaic. But at the same time, I already recuperate stuff from the page as ID's that I need to fetch anyways. What would be best compromise here for safety, ease-of-use and understanding, stability, and speed?

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• introducing pointers to a large software project

  - by stefan

  I have a fairly large software project written in c++. In there, there is a class foo which represents a structure (by which i don't mean the programmers struct) in which foo-objects can be part of a foo-object. Here's class foo in simplest form: class Foo { private: std::vector<unsigned int> indices; public: void addFooIndex(unsigned int); unsigned int getFooIndex(unsigned int); }; Every foo-object is currently stored in an object of class bar. class Bar { private: std::vector<Foo> foos; public: void addFoo(Foo); std::vector<Foo> getFoos(); } So if a foo-object should represent a structure with a "inner" foo-object, I currently do Foo foo; Foo innerFoo; foo.addFooIndex(bar.getFoos().size() - 1); bar.addFoo(innerFoo); And to get it, I obviously use: Foo foo; for ( unsigned int i = 0; i < foo.getFooIndices().size(); ++i ) { Foo inner_foo; assert( foo.getFooIndices().at(i) < bar.getFoos().size() ); inner_foo = bar.getFoos().at(foo.getFooIndices().at(i)); } So this is not a problem. It just works. But it's not the most elegant solution. I now want to make the inner foos to be "more connected" with the foo-object. It would be obviously to change class foo to: class Foo { private: std::vector<Foo*> foo_pointers; public: void addFooPointer(Foo*); std::vector<Foo*> getFooPointers(); }; So now, for my question: How to gently change this basic class without messing up the whole code? Is there a "clean way"?

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• F# Project Euler Problem 1

  - by MarkPearl

  Every now and then I give project Euler a quick browse. Since I have been playing with F# I have found it a great way to learn the basics of the language. Today I thought I would give problem 1 an attempt… Problem 1 If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000. My F# Solution I broke this problem into two functions… 1) be able to generate a collection of numbers that are multiples of a number but but are smaller than another number. let GenerateMultiplesOfXbelowY X Y = X |> Seq.unfold (fun i -> if (i<Y) then Some(i, i+X) else None) I then needed something that generated collections for multiples of 3 & 5 and then removed any duplicates. Once this was done I would need to sum these all together to get a result. I found the Seq object to be extremely useful to achieve this… let Multiples = Seq.append (GenerateMultiplesOfXbelowY 3 1000) (GenerateMultiplesOfXbelowY 5 1000) |> Seq.distinct |> Seq.fold(fun acc a -> acc + a) 0 |> Console.WriteLine |> Console.ReadLine My complete solution was … open System let GenerateMultiplesOfXbelowY X Y = X |> Seq.unfold (fun i -> if (i<Y) then Some(i, i+X) else None) let Multiples = Seq.append (GenerateMultiplesOfXbelowY 3 1000) (GenerateMultiplesOfXbelowY 5 1000) |> Seq.distinct |> Seq.fold(fun acc a -> acc + a) 0 |> Console.WriteLine |> Console.ReadLine   Which seemed to generate the correct result in a relatively short period of time although I am sure I will get some comments from the experts who know of some intrinsic method to achieve all of this in one method call.

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• Starting software projects

  - by shox

  Always , when i try to start new project , with what i think new ideas , first of all i search the web to try to find some thing same, most of the time ( if not all ) , i find that my ideas of new project have been implemented hundred of times , i think every one in software industry , feel this every day , the question is : when should i approve an idea and start building it , although its implemented hundred of times around the world . How i can make my way in trying of build something new

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• Heroku and Github integration (how to structure the project)

  - by Noah

  I'm creating a webservice and I want to store the source on github and run the app on heroku. I haven't seen my exact scenario addressed anywhere on the 'net so far, so I'll ask it here: I want to have the following directory structure: /project .git README <-- project readme file TODO.otl <-- project outline ... <-- other project-related stuff /my_rails_app app config ... README <-- rails' readme file In the above, project corresponds to http://github.com/myuser/project, and my_rails_app is the code that should be pushed to heroku. Do I need a separate branch for the rails app, or is there a simpler way that I'm missing? I guess my project-related non-rails files could live in my_rails_app, but the rails README already lives there and it seems inconsistent to overwrite that. However, if I leave it, my github page for the rails app will contain the rails readme, which makes no sense. Thanks, Noah P.S. I tried just setting it up as described above and running git push heroku from the main project folder. Of course, heroku doesn't know I want to deploy the subfolder: -----> Heroku receiving push ! Heroku push rejected, no Rails or Rack app detected.

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• TFS 2010 : Unable to add Project to a collection

  - by Scott

  This morning I'm trying to setup Team Foundation Server 2010 to demo for my team. As this is just a demo, I thought I would install it on my Windows 7 machine which also serves as my development machine. My development machine uses Visual Studio 2008 Team Suite. I installed Team Explorer 2008 and then reapplied SP1. Finally I installed and setup TFS 2010. TFS by default gave me administrator privileges. I started up Visual Studios, and connected up to the Collection just fine. However, I'm unable to create a new project and get the follow error message: "TF30172: You are trying to create a team project either without required permissions or with an older version of team Explorer. Contact your project admin..." To check to permissions, I used my home computer which is running Visual Studio 2010. On this machine I was able to connect up to the same TFS instance and create a project no problem. So it looks as though it is a team explorer problem, but everywhere on the web people are saying not only am what I'm trying to do possible, but they have done it themselves. What am I missing to add a project to TFS 2010 under Visual Studio 2008?

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• iPhone UIWebView: loadData does not work with certain types (Excel, MSWord, PPT, RTF)

  - by Thomas Tempelmann

  My task is to display the supported document types on an iPhone with OS 3.x, such as .pdf, .rtf, .doc, .ppt, .png, .tiff etc. Now, I have stored these files only encrypted on disk. For security reasons, I want to avoid storing them unencrypted on disk. Hence, I prefer to use loadData:MIMEType:textEncodingName:baseURL: instead of loadRequest: to display the document because loadData allows me to pass the content in a NSData object, i.e. I can decrypt the file in memory and have no need to store it on disk, as it would be required when using loadRequest. The problem is that loadData does not appear to work with all file types: Testing shows that all picture types seem to work fine, as well as PDFs, while the more complex types don't. I get a errors such as: NSURLErrorDomain Code=100 NSURLErrorDomain Code=102 WebView appears to need a truly working URL for accessing the documents as a file, despite me offering all content via the NSData object already. Here's the code I use to display the content: [webView loadData:data MIMEType:type textEncodingName:@"utf-8" baseURL:nil]; The mime-type is properly set, e.g. to "application/msword" for .doc files. Does anyone know how I could get loadData to work with all types that loadRequest supports? Or, alternatively, is there some way I can tell which types do work for sure (i.e. officially sanctioned by Apple) with loadData? Then I can work twofold, creating a temp unencrypted file only for those cases that loadData won't like. Update Looks like I'm not the first one running into this. See here: http://osdir.com/ml/iPhoneSDKDevelopment/2010-03/msg00216.html So, I guess, that's the status quo, and nothing I can do about it. Someone suggested a work-around which might work, though: http://osdir.com/ml/iPhoneSDKDevelopment/2010-03/msg00219.html Basically, the idea is to provide a tiny http server that serves the file (from memory in my case), and then use loadRequest. This is probably a bit more memory-intensive, though, as both the server and the webview will probably both hold the entire contents in memory as two copies then, as opposed to using loadData, where both would rather share the same data object. (Mind you, I'll have to hold the decrypted data in memory, that's the whole point here).

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• Problem installing Microsoft Project

  - by sprasad12

  Hi, I am trying to install Microsoft Project 2007 onto my windows vista. The installation process completes with no problem. But once installed if i try to open, it says that it is configuring the microsoft project and later gives an error saying that there is not enough space for it to open the microsoft project. Can someone please explain what might be going wrong. Thank you.

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• Clojure Protocols vs Scala Structural Types

  - by Vasil Remeniuk

  After watching the interview with Rich Hickey on Protocols in Clojure 1.2, and knowing very little about Clojure, I have some questions on Clojure Protocols: Are they intended to do the same thing as Structural Types in Scala? What benefits do Protocols have over Structural Types (performance, flexibility, code clarity, etc.)? Are they implemented through reflections? Questions on interoperability with Scala: Can Protocols be used instead of Structural Types in Scala? Can they be extended (if 'extension' term can be applied to Protocols) in Scala?

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• Ndepend CQL to find methods of certain types using particular framework assembly

  - by icelava

  In order to check if types not derived from certain base classes are using a low-level framework assembly, the following query can be used. SELECT TYPES WHERE IsDirectlyUsing "ASSEMBLY:Framework.Data" AND !(DeriveFrom "App.BaseTypes.BusinessFacadeBase" OR DeriveFrom "App.BaseTypes.BusinessComponentBase" OR DeriveFrom "App.BaseTypes.DataAccessComponentBase") Now I wish to drill down further to see which methods from those classes are actually doing so. But the thing is if I change the query target from TYPES to METHODS then DeriveFrom is not going to apply. How can these criteria be preserved?

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• How to handle Oracle Store Procedure call with Oracle Types as input or output using EclipseLink

  - by MAK

  Hi, I doing a Proof Of Concept to figure out how efficient to call a store procedure using EclipseLink. I was able to call oracle store procedure using EclispeLink with Scalar/primitive data types (link Integer, varchar etc). I wanted to understand how can I handle Oracle Store procedure from EclipseLink with collection(Oracle Types/User defined types) as input or output parameters. I would really appreciate if some one help me understand this with an example. Thanks MAK

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• Project Honey Pot - mod_httbl

  - by Henko

  I'm very interested in project honey pot. It seems like a smart way of blocking harversters etc from your web server. I found out about mod_httpbl for apache but I haven't find much to read about it other than on project honey pot's homepage. Doesn't seem like a very active project(?) Could someone with exeperience of httpbl tell me if mod_httpbl is good/bad or if there are other better alternatives?

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• Python metaclass for enforcing immutability of custom types

  - by Mark Lehmacher

  Having searched for a way to enforce immutability of custom types and not having found a satisfactory answer I came up with my own shot at a solution in form of a metaclass: class ImmutableTypeException( Exception ): pass class Immutable( type ): ''' Enforce some aspects of the immutability contract for new-style classes: - attributes must not be created, modified or deleted after object construction - immutable types must implement __eq__ and __hash__ ''' def __new__( meta, classname, bases, classDict ): instance = type.__new__( meta, classname, bases, classDict ) # Make sure __eq__ and __hash__ have been implemented by the immutable type. # In the case of __hash__ also make sure the object default implementation has been overridden. # TODO: the check for eq and hash functions could probably be done more directly and thus more efficiently # (hasattr does not seem to traverse the type hierarchy) if not '__eq__' in dir( instance ): raise ImmutableTypeException( 'Immutable types must implement __eq__.' ) if not '__hash__' in dir( instance ): raise ImmutableTypeException( 'Immutable types must implement __hash__.' ) if _methodFromObjectType( instance.__hash__ ): raise ImmutableTypeException( 'Immutable types must override object.__hash__.' ) instance.__setattr__ = _setattr instance.__delattr__ = _delattr return instance def __call__( self, *args, **kwargs ): obj = type.__call__( self, *args, **kwargs ) obj.__immutable__ = True return obj def _setattr( self, attr, value ): if '__immutable__' in self.__dict__ and self.__immutable__: raise AttributeError( "'%s' must not be modified because '%s' is immutable" % ( attr, self ) ) object.__setattr__( self, attr, value ) def _delattr( self, attr ): raise AttributeError( "'%s' must not be deleted because '%s' is immutable" % ( attr, self ) ) def _methodFromObjectType( method ): ''' Return True if the given method has been defined by object, False otherwise. ''' try: # TODO: Are we exploiting an implementation detail here? Find better solution! return isinstance( method.__objclass__, object ) except: return False However, while the general approach seems to be working rather well there are still some iffy implementation details (also see TODO comments in code): How do I check if a particular method has been implemented anywhere in the type hierarchy? How do I check which type is the origin of a method declaration (i.e. as part of which type a method has been defined)?

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• Project setup for creating third party libraries for Android

  - by Jarle Hansen

  Hi all, I am creating a library for Android that others can include in their own project. So far I have been working on it as a normal Java project with JDK 1.6 setup as system library. This works just fine in Eclipse when I add the android.jar. The issue comes when I try to my build script. I am running Gradle and doing a normal compile and test build cycle. My thoughts were that it does not matter if I compile it with a normal JDK, since this is not a standalone application. The benefits by creating a normal Java project is that Gradle does support this much better. My project also does not contain any UI at all. However, the problem is that of course android.jar and the JDK contains lots of the same classes and I think that this is what messes up my build script. Everything crashes when running the tests (the tests are in the same project under src/test/java). My question is, how should I create this project that is meant to be included in Android projects as a third party library? Should I create it as an Android project in Eclipse even though I am only creating a library that does not use any of the UI features? Also, should the tests be in a separate project? Thanks for all responses!

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• visual studio 2010 database project, is there a visual way?

  - by b0x0rz

  started a visual studio 2010 database project. however i am only able to write sql in a text mode, there is no functionality in making the table for example in a visual view as exists when you add a new database to app_data folder and the work on it there. is this the only way and there is no visual way of doing this in the visual studio 2010 database project? or am i missing some obvious way of getting to it? thank you also if there is a tutorial anywhere (video maybe!?) please link it. i only found importing a database from an existing script video using a wizard. would like new database from scratch without wizard.

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• What to look for in estimating a PowerBuilder Conversion Project?

  - by tekiegreg

  Hi there, I've been trying to do a spec for a PowerBuilder 9 to 11.5 migration of a relatively complex application. Granted PowerBuilder is not really my specialty I'm having issues trying to justify an estimate for this part of the project (and the PowerBuilder people I've been talking with have had some personal issues lately and are out of communication). These are some of the metrics that we have seen and can evaluate: -PBL Files -Main Windows -Data Windows -Functions (no we don't have the source available on this project) What metrics in particular are helpful and how long would any given "unit" such as a Data Window take?

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• Visual Studio 2005 Open Project Dialog Slow as Molasses

  - by futureelite7

  Hi, Whenever I try to open a project in Visual Studio 2005 (Windows XP), my open project dialog become slow as molasses - navigating down one level of folders typically takes almost 60 seconds. Finding the project and opening it can take up 4-5 minutes, which is just ridiculous. I've checked the open project dialogs of other programs - only VS2005 is acting this way. What could be causing this problem and how do I go about solving it (apart from reinstalling VS2005 / windows) (Edit: Even VS2008 on the same machine does not have this problem. I don't know what's wrong.) Thanks!

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• Add new types to Go

  - by nevalu

  I'm trying add new types for that been managed/used as in Go core types. To create new types is anything very interesting to validate data before of send it to a non-SQL DBMS or to check data from a form. Go uses univeral constants to define them at global level: var DateType = universe.DefineType("date", universePos, &dateType{}) In this case they're defined to be called from a package like types: var Date = &dateType{} I get these errors: test.go:58: o.lit undefined (cannot refer to unexported field lit) test.go:62: *dateType is not Type missing Pos() token.Position The code is based on: http://github.com/tav/go/blob/master/src/pkg/exp/eval/value.go http://github.com/tav/go/blob/master/src/pkg/exp/eval/type.go package main import ( "exp/eval" "fmt" // "go/token" ) // http://github.com/tav/go/blob/master/src/pkg/exp/eval/value.go type DateValue interface { eval.Value Get(*eval.Thread) string Set(*eval.Thread, string) } /* Date */ type dateV string func (v *dateV) String() string { return fmt.Sprint(*v) } func (v *dateV) Assign(t *eval.Thread, o eval.Value) { *v = dateV(o.(DateValue).Get(t)) } func (v *dateV) Get(*eval.Thread) string { return string(*v) } func (v *dateV) Set(t *eval.Thread, x string) { *v = dateV(x) } // http://github.com/tav/go/blob/master/src/pkg/exp/eval/type.go type Type interface { eval.Type // isDate returns true if this is a date type. isDate() bool } /* Common type */ type commonType struct{} // added func (commonType) isDate() bool { return false } /* Date */ type dateType struct { commonType } // * It should not be an universal constant //var universePos = token.Position{"<universe>", 0, 0, 0} // added //var DateType = universe.DefineType("date", universePos, &dateType{}) var Date = &dateType{} func (t *dateType) compat(o Type, conv bool) bool { t2, ok := o.lit().(*dateType) return ok && t == t2 } func (t *dateType) lit() Type { return t } func (t *dateType) isDate() bool { return true } func (t *dateType) String() string { return "<date>" } func (t *dateType) Zero() eval.Value { res := dateV("") return &res } /* Named types */ /* type NamedType struct { eval.NamedType Def Type }*/ type NamedType struct { // added // token.Position Name string // Underlying type. If incomplete is true, this will be nil. // If incomplete is false and this is still nil, then this is // a placeholder type representing an error. Def Type // True while this type is being defined. incomplete bool methods map[string]eval.Method } func (t *NamedType) isDate() bool { return t.Def.isDate() } /* *********************** */ func main() { print("foo") }

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• Visual Studio 2005 Open Project Dialog Slow as Molasses

  - by futureelite7

  Whenever I try to open a project in Visual Studio 2005 (Windows XP), my open project dialog become slow as molasses - navigating down one level of folders typically takes almost 60 seconds. Finding the project and opening it can take up 4-5 minutes, which is just ridiculous. I've checked the open project dialogs of other programs - only VS2005 is acting this way. What could be causing this problem and how do I go about solving it (apart from reinstalling VS2005 / windows) (Edit: Even VS2008 on the same machine does not have this problem. I don't know what's wrong.) Thanks!

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• Software developer trying to charge us $4,000 for a quoted project of $1,600. What options do I have

  - by Tom Jones

  This is totally out in left field... but I'm grasping at straws here... We hired a software developer and later found out he lives in Pakistan. He quoted us $1,600 for a project… and now that the project is done, he sent us a bill for $4,000. He didn't let us know he went over the quote… he just continued working without notifying us. Now he expects us to pay the $4,000 when he originally told us, via email, that it would NOT be more than $1,600. What options do I have?

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• There are lots of useful answers about estimating the cost of a project. Are there any recommendatio

  - by Chrys

  Let me clarify this a bit more. I started giving estimations about projects/tasks. I write everything down in a spreadsheet. I know that soon this spreadsheet won't help much (searching, recommending similar project estimations etc...) Do you have any recommendations for any tools I can use for keeping a track of all these estimations? Is there a tool out there that for example will give me related project estimations like stackoverflow gives me related questions when I type one question.

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• NAnt errors when generating assembly info after project is upgraded to VS2010

  - by Grant Palin

  I have a project I recently upgraded to VS2010 - the project/solution files are updated, but I'm still targeting .NET 3.5. Until now, my standard NAnt build script has not given me any trouble. However, it appears that after updating the project, and updating the NAnt config to be aware of the new tooling, I am now receiving an error when autogenerating assembly information, which fails the build. The relevant build task is below: <asminfo output="${dir.src}\${file.commonAssemblyInfo}" language="${project.codeLanguage}"> <imports> <import namespace="System.Reflection" /> </imports> <attributes> <attribute type="AssemblyVersionAttribute" value="${project.fullversion}" /> <attribute type="AssemblyFileVersionAttribute" value="${project.fullversion}" /> <attribute type="AssemblyInformationalVersionAttribute" value="${project.fullversion}" /> <attribute type="AssemblyCopyrightAttribute" value="${assembly.copyright}" /> <attribute type="AssemblyCompanyAttribute" value="${assembly.company}" /> <attribute type="AssemblyConfigurationAttribute" value="${project.config}" /> <attribute type="AssemblyTrademarkAttribute" value="${assembly.trademark}" /> <attribute type="AssemblyProductAttribute" value="${assembly.product}" /> </attributes> </asminfo> The error is highlighted for the first line of the asminfo task. It reads: AssemblyInfo file 'C:\Users\Grant\Projects\VisualStudio\Checklist\src\CommonAssemblyInfo.cs' could not be generated. This method implicitly uses CAS policy, which has been obsoleted by the .NET Framework. In order to enable CAS policy for compatibility reasons, please use the NetFx40_LegacySecurityPolicy configuration switch. Please see http://go.microsoft.com/fwlink/?LinkID=155570 for more information. I've gathered so far that this is something new to .NET 4. Has anyone had to address this error before? Does anyone know what it is about asminfo that may be triggering the error?

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• What file types can OpenOffice read

  - by Nifle

  Could anyone give me a current list of file types OpenOffice can open and edit?

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