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  • Error handling in VS/C# build events.

    - by ProfK
    I have just written a small utility to be used in a pre-build event. The utilty works fine when run as standalone, but does nothing when used in the build event. Is there a standard way of noticing and dealing with error conditions in build events, or is that the domain of more advanced build control?

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  • Performance implications of Synchronous Sockets vs Asynchronous Sockets

    - by Akash Kava
    We are trying to build an SMTP Server to receive mail notifications from various clients over internet. As each of the communication will be longer and it needs to log everything, doing this Asynchronous way is little challenging as well as by using Socket's Asynchronous methods we are not sure of how flow of control and error handling happens. Previously we wrote lot of server/client apps but we always used Synchronous sockets, reason being they are longer sessions and each session also has lot of local data to manage and parsing messages etc. Does anyone have any experience over real performance differences between these two methods? Async calls use ThreadPool which we have experienced many times to just die for no reason. And we fail to restart threadpool etc. In one way Request-Response protocol of HTTP, Async Sockets makes sense, but SMTP/IMAP etc protocols are longer and they have interleaved messages plus state machine of server. So Async methods are really complicated to program. However if anyone can share the performance of Sockets, it will be helpful.

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  • Cleanup vs Dispose(bool) in MVVM-light

    - by Budda
    In the lastest version of MVVM-light (V3 SP1) both "Dispose()" and "Dipose(bool)" methods in ViewModel class are marked Do not use this method anymore, it will be removed in a future version. Use ICleanup.Cleanup() instead Does this mean that IDisposable interface must not be implemented in all ViewModel classes that are derived from GalaSoft.MvvmLight.ViewModelBase (and cleanup must be overrided)? If yes, using can't be used for view-model instances... Probably I didn't understand something... Please clarify... What are the benefits of such cleaning up? Thanks.

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  • Using String+string+string vs using string.replace

    - by Madi D.
    A colleague told me that using the following method: string url = "SomeURL"; string ext = "SomeExt"; string sub = "SomeSub"; string subSub = "moreSub"; string Url = @"http://www." + Url +@"/"+ ext +@"/"+ sub + subSub; is not efficenet (takes more resources) and it is preferred to use the following method: string Url = @"http://www.#URL.#EXT/#sub/#subSub"; string url = "SomeURL"; string ext = "SomeExt"; string sub = "SomeSub"; string subSub = "moreSub"; Url.Replace("#URL",url) Url.Replace("#EXT",ext); Url.Replace("#sub",sub); Url.Replace("#subSub",subSub); Is that true? and what is the explanation behind it?

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  • SQLite vs Firebird

    - by rwallace
    The scenario I'm looking at is "This program uses Postgres. Oh, you want to just use it single-user for the moment, and put off having to deal with installing a database server? Okay, in the meantime you can use it with the embedded single-user database." The question is then which embedded database is best. As I understand it, the two main contenders are SQLite and Firebird; so which is better? Criteria: Full SQL support, or as close as reasonably possible. Full text search. Easy to call from C# Locks, or allows you to lock, the database file to make sure nobody tries to run it multiuser and ends up six months down the road with intermittent data corruption in all their backups. Last but far from least, reliability. As I understand it, the disadvantages of SQLite are, No right outer join. Workaround: use left outer join instead. Not much integrity checking. Workaround: be really careful in the application code. No decimal numbers. Workaround: lots of aspirin. None of the above are showstoppers. Are there any others I'm missing? (I know it doesn't support some administrative and code-within-database SQL features, that aren't relevant for this kind of use case.) I don't know anything much about Firebird. What are its disadvantages?

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  • Developer certificate vs purchased certificate for WCF

    - by RemotecUk
    I understsand that if I want to use authentication in WCF then I need to install a certificate on my server which WCF will use to encrypt data passing between my server and client. For development purposes I believe I can use the makecert.exe util. to make a development certificate. What is the worst that can happen if I use this certificate on the production environment? and... Why cant I use this certificate on the production environment? and ... What is the certificate actually going to do in this scenario? [Edit: Added another question] finally... In a scenario where the website has a certificate installed to provide HTTPS support can the same certificate be used for the WCF services as well? Note on my application: Its a NetTCP client and server service. The users will log in using the same username and password which they use for the website which is passed in clear text. I would be happy to pass the u/n + p/w in cleartext to WCF but this isnt allowed by the framework and a certificate must be in place. However, I dont want to buy an certificate due to budget constraints! (Sorry for the possibly stupid question but I really dont understand this so would welcome some help with this).

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  • NoSQL vs Ehcache caching advise for speeding up read only mysql Database

    - by paddydub
    I'm building a Route Planner Webapp using Spring/Hibernate/Tomcat and a mysql database, I have a database containing read only data, such as Bus Stop Coordinates, Bus times which is never updated. I'm trying to make the app run faster, each time the application is run it will preform approx 1000 reads to the database to calculate a route. I have setup a Ehcache which greatly improves the read from database times. I'm now setting terracotta + Ehcache distributed caching to share the cache with multiple Tomcat JVMs. This seems a bit complicated. I've tried memcached but it was not performing as fast as ehcache. I'm wondering if a MongoDb or Redis would be better suited. I have no experience with nosql but I would appreciate if anyone has any ideas. What i need is quick access to the read only database.

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  • Cornerstone vs Versions for Mac OS X

    - by splicer
    I've been using svn on the command line for 5+ years, but I'm thinking of switching to GUI. The two kings of Mac subversion apps seem to be Versions and Cornerstone. Most of the reviews/comments I've seen comparing the two are from way back in 2008, when Cornerstone was first released. It's now 2010, and both apps have undergone significant changes. I've been running trial copies of both apps for the past week, and I still can't make up my mind. Which would you recommend and why?

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  • F# vs Haskell vs Lisp - which language to learn?

    - by empi
    I've heard a lot about functional programming languages and I'm willing to learn one. I guess it will be mostly for fun, however, I hope it will improve my programming skills. I have mostly C#/.NET background, so my first choice is to learn F# (because of .NET and familiarity with Visual Studio). On the on other hand, I wonder if F# has features like Lisp macros or Haskell higher order functions. Could you compare F#, Haskell and Lisp? Which one will be the language of your choice?

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  • VS 2010 and Entity Framework: accessing SQL Server 2000 databases

    - by pcampbell
    Consider a Visual Studio 2010 project whose requirement is to model the data using Entity Framework. The datasource is a SQL Server 2000 database. The first step is creating a new ADO.NET Entity Data Model item. The Entity Data Model Wizard prompts for a Data Connection. When creating a new Connection, you will need to use a provider other than SqlClient. Usually it's SQLOLEDB. The list of data providers only has SqlClient or ".NET Framework Data Provider for SQL Server". Is there a work-around for Visual Studio 2010 to create or use data connections to SQL Server 2000 using the Entity Framework?

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  • C# vs Java Concurrency

    - by Lirik
    What are some notable differences between C# and Java concurrency? Are there any fundamental differences that we should know about? What should developers consider when trying to pick one or the other? I based my question on this one, but I'm more interested in the fundamental differences... not which one is better.

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  • HiLo vs Identity?

    - by Mendy
    This is the same question as: http://stackoverflow.com/questions/803872/hilo-or-identity Let's take the database of this site as an example. Lets say that the site has the following tables: Posts. Votes. Comments. What is the best strategy to use for it: Identity - which is more common. OR HiLo - which give best performance. Edit: if HiLo is the best, how the structure of the DB would be?

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  • Programming in python Vs programming in Java

    - by yossale
    I've been writing Java for the last couple of years , and now I've started to write in python (in addition). The problem is that when I look at my Python code it looks like someone tried to hammer Java code into a python format , and it comes out crappy because - well , python ain't Java. Any tips on how to escape this pattern of "Writing Java in Python"? Thanks!

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  • BIRT vs Jasper Reports

    - by Sandeep Jindal
    Hi, I goggled for 2 hours to find what shall I use. I found that both are good and have good community. BIRT is supported by IBM, IBM integrated Tivoli reports with it. This proves it is good and will keep growing. Jasper Reports has fairly bid community and (probably) a better report designed (iReport). My requirement is simple: I want to use quick, good reporting tool. My reporting requirements may keep on increasing, thus would like a tool which remains upto-the-mark with market. Please suggest.

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  • Routing in php vs routing in rails..

    - by piemesons
    I was working on php from past 1 yr and now a days i m learning rails. In rails:-- Routing takes an incoming URL and decodes it into a set of parameters that are used by Rails to dispatch to the appropriate controller and action for example rs.recognize_path "/blog/show/123" {:controller=>"blog", :action=>"show", :id=>"123"} M i right?? We mention this (written down) line of code in our routes.rb under config directory to tell rails how to handle the request like "/blog/show/123" using this line of code. map.connect "blog/show/:id", :controller => "blog", :action => "show", :id => /\d+/ Fine.. Now in php when we do something like this www.xxx.com/profile.php?profile_id=2 How the request is sent to the requested page. Means i never wrote anything for routing in php, then how this request has been handled. How the rounting is done in php (anything i missed during my learning/working in php) R u getting what i am asking. Please let me know if there is any problem.

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  • Connection pooling options with JDBC: DBCP vs C3P0

    - by Dema
    What is the best connection pooling library available for Java/JDBC? I'm considering the 2 main candidates (free / open-source): Apache DBCB - http://commons.apache.org/dbcp/ C3P0 - http://sourceforge.net/projects/c3p0 I've read a lot about them in blogs and other forums but could not reach a decision. Is there any relevant alternatives to this two?

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  • Spark VS 2010 intellisense

    - by mare
    I was thinking about switching one of my projects (and after that subsequently other projects too) to Spark View Engine but after todays research I ran into problem of a lack of Intellisense for Visual studio 2010. Not only that but it seems that the project is not maintained regularly. So I'm left with a feeling that I should not choose Spark at this time yet. However, apparently NHaml has the same "issues" too. I know it is discussed in more detail here http://stackoverflow.com/questions/1451319/asp-net-mvc-view-engine-comparison but I would still like you thoughts on what to choose or just stay with WebForms view engine for now?

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  • WPF Binding Failure performance hit vs Exception

    - by Aran Mulholland
    when we bind to heterogeneous collection of objects, not all objects have the same set of properties. in the output window we get a message like: System.Windows.Data Error: 39 : BindingExpression path error: 'RoundingFactor' property not found on 'object' ''MultiLineTextMarkingScheme' (HashCode=7262386)'. BindingExpression:Path=RoundingFactor;.......... This doesn't appear to be an exception, but we are concerned it has a performance impact. Should we be concerned and create a view model that has all the properties we wish to bind to (and have the properties that dont exist on the underlying element return null) or can we just leave it. This situation often occurs in a grid scenario where there might be large numbers of these binding failures.

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