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  • Does someone have used Network Emulator API exposed in VS 2010

    - by Pritam
    Hi, I have seen VS2010 exposing Network Emulator API. I have installed it and trying to use this API, but not able detect whether it is really running with this code or not. Sometime I have given wrong profile name but it does not throw any error. Please find below my piece of code. If some one have used it please help me. IntPtr m_emulatorHandle = IntPtr.Zero; NetworkEmulationApi.LoadProfile(m_emulatorHandle, "300KB_WithLatency.xml"); NetworkEmulationApi.StartEmulation(m_emulatorHandle); Thanks, Pritam

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  • NSPredicate error/behaving differently on 10.5 vs 10.6

    - by Tristan
    I am using a NSPredicate to determine if an entered email address is valid. On 10.6 it works perfectly as expected. I recently decided to get my app going on 10.5 and this is the only thing that doesn't work. The error i get is as follows: "Can't do regex matching, reason: Can't open pattern U_MALFORMED_SET (string [email protected], pattern ([\w-+]+(?:\.[\w-+]+)*@(?:[\w-]+\.)+[a-zA-Z]{2,7}), case 0, canon 0)" The code im using is as follows: NSString *regex = @"([\\w-+]+(?:\\.[\\w-+]+)*@(?:[\\w-]+\\.)+[a-zA-Z]{2,7})"; NSPredicate *regextest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; if ([regextest evaluateWithObject:[userEmail objectValue]] == YES) Does anyone know why this isn't working on 10.5? And how I might get it working or be able to do this test in a way compatible for both 10.5 and 10.6?

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  • DataGridTemplateColumn for individual control-column vs DataGridTextColumn

    - by msfanboy
    Hello, what is the difference, both works: DataGridTemplateColumn versus DataGridTextColumn <DataGridTemplateColumn Header="Homework"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <RichTextBox > <FlowDocument> <Paragraph> <Run Text="{Binding Homework}"/> </Paragraph> </FlowDocument> </RichTextBox> </DataTemplate> </DataGridTemplateColumn.CellTemplate> </DataGridTemplateColumn> <DataGridTextColumn Header="Homework"> <DataGridTextColumn.CellTemplate> <DataTemplate> <RichTextBox > <FlowDocument> <Paragraph> <Run Text="{Binding Homework}"/> </Paragraph> </FlowDocument> </RichTextBox> </DataTemplate> </DataGridTextColumn.CellTemplate> </DataGridTextColumn >

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  • Flash video player VS HTML 5 Video.....

    - by metal-gear-solid
    I need to add a video player to play a video on a webpage. usually i use Flash player with the help of swfobject library. which works if flash player and javascript both are enabled. I'm currently using XHTML 1.0 strict doctype. My question is can i just change my doctype to HTML 5 doctype and add Video player using HTML 5 video. for browser which do not support HTML5 i can a a javascript. in this condition in supported browser Video will work without Flash player and javascript and in non-supported browser will work with js support. Is this possible? Is this a good idea?

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  • DataTable vs. Collection in .Net

    - by B Pete
    I am writing a program that needs to read a set of records that describe the register map of a device I need to communicate with. Each record will have a handfull of fields that describe the properties of each register. I don't really need to edit or modify the data in my VB or C# program, though I would like to be able to display the data on a grid. I would like to store the data in a CSV file, or perhaps an XML file. I need to enable users to edit the data off-line, preferably in excel. I am considering using a DataTable or a Collection of "Register" objects (which I would define). I prototyped a DataTable, and found I can read/write XML easily using the built in methods and I can easily bind to a DataGridView. I was not able to find a way to retreive info on a single register without using a query that returns a collection of rows, even though I defined a unique primaty key column. The syntax to get a value from a column is also complex, though I could be missing something on both counts. I'm tempted to use a collection of "Register" objects that I can access via a unique key. It would be a little more coding up front, but seems like a cleaner solution overall. I should still be able to use LINQ to dataset to query subsets of registers when I need them, but would also be able to grab a single field using a the key value, something like this: Registers(keyValue).fieldName). Which would be a cleaner approach to the problem? Is there a way to read/write XML into a Collection without needing custom code? Could this be accomplished using String for a key?

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  • LINQ: Dot Notation vs Query Expression

    - by Martín Marconcini
    I am beginning to use LINQ in general (so far toXML and toSQL). I've seen that sometimes there are two or more ways to achieve the same results. Take this simple example, as far as I understand both return exactly the same thing: SomeDataContext dc = new SomeDataContext(); var queue = from q in dc.SomeTable where q.SomeDate <= DateTime.Now && q.Locked != true orderby (q.Priority, q.TimeCreated) select q; var queue2 = dc.SomeTable .Where( q => q.SomeDate <= DateTime.Now && q.Locked != true ) .OrderBy(q => q.Priority) .ThenBy(q => q.TimeCreated); Besides any mistake I may have made in the syntax or a missing parameter or difference, the idea is that there are two ways to express the same thing; I understand that the first method has some limitations and that the "dot notation" is more complete, but besides that, are there any other advantages?

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  • Portable C++ library for IPC (processes and shared memory), Boost vs ACE vs Poco?

    - by user363778
    Hi, I need a portable C++ library for doing IPC. I used fork() and SysV shared memory until now but this limits me to Linux/Unix. I found out that there are 3 major C++ libraries that offer a portable solution (including Windows and Mac OS X). I really like Boost, and would like to use it but I need processes and it seems like that this is only an experimental branch until now!? I have never heard of ACE or POCO before and thus I am stuck I do not know which one to choose. I need fork(), sleep() (usleep() would be great) and shared memory of course. Performance and documentation are also important criteria. Thanks, for your Help!

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  • Throw a long list of exceptions vs throw an Exception vs throw custom exception?

    - by athena
    I have an application which uses two methods of an API. Both these methods throw more than five exceptions each. So, if I just add a throws declaration then it becomes a list of more than ten. (My method cannot handle any of the ten exceptions) I have read that throwing a long list of exceptions is a bad practice. Also throwing (the umbrella) Exception is a bad practice. So, what should I do? Add a try catch block, and log and exit in the catch block? (Current approach) Create a custom exception class, wrap every exception and throw the custom exception? Add a throws declaration for all exceptions? Throw Exception?

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  • SQL: Join vs. subquery

    - by Col. Shrapnel
    I am an old-school MySQL user and always preferred JOIN over sub-query. But nowadays everyone uses sub-query and I hate it, dunno why. Though I've lack of theoretical knowledge to judge myself if there are any difference. Well, I am curious if sub-query as good as join and there is no thing to worry about?

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  • C++11 VS 2012 functor seems to choke when I have more than 5 parameters

    - by bobobobo
    function <void ( int a, int b, int ia, int ib, bool rev, const Vector4f& color )> benchTris = [&pts]( int a, int b, int ia, int ib, bool rev, const Vector4f& color ) { } The error is: error C2027: use of undefined type 'std::_Get_function_impl<_Tx>' with [ _Tx=void (int,int,int,int,bool,const Vector4f &) ] main.cpp(374) : see reference to class template instantiation 'std::function<_Fty>' being compiled with [ _Fty=void (int,int,int,int,bool,const Vector4f &) ] Works ok if I remove ONE parameter, for example a from the front: function <void ( int b, int ia, int ib, bool rev, const Vector4f& color )> benchTris = [&pts]( int b, int ia, int ib, bool rev, const Vector4f& color ) { // ok } Is there some parameter limit I don't know about?

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  • Penalty of using QGraphicsObject vs QGraphicsItem?

    - by Dutch
    I currently have a hierarchy of items based off of QGraphicsItem. I want to move to QGraphicsObject instead so that I can put properties on my items. I will not be making use of signals/slots or any other features of QObject. I'm told that you shouldn't derive from QObject because it's "heavy" and "slow". To test the impact, I derive from QGraphicsObject, add a couple properties to my items, and look at the memory usage of the running app. I create 1000 items using both flavors and I don't notice anything more than 10k more memory usage. Since all I am adding on to my items are properties, is it safe to say that QObject only adds weight if you are using signals/slots?

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  • VS 2010 Layer Diagram Validation Error is Showing A Dependency That Doesn't Even Exist (AV0001)

    - by Dan
    I'm getting the following validation error on my layer diagram Error 65 AV0001 : Invalid Dependency : Weld.Interface.Core(Assembly) -- Weld.Interface(Namespace) Layers: Application Framework Core, Application Framework | Dependencies: Namespace Reference D:\Projects\Windows Projects\Weld\Weld\ModelingProject1\Weld.layerdiagram 0 0 ModelingProject1 Weld.Interface.Core: This assembly and namespace does not have a reference to Weld.Interface and only references .NET Framework classes Weld.Interface: This assembly and namespace does not have a reference to Weld.Interface There is no dependancy between these two layers in the dependency diagram. I am confused why I am getting this error. No dependency in the project or code, and no dependency is even setup in the layer diagram. Somehow the Validation logic in the layer diagram is seeing a non existant dependency and saying it is an error. Any ideas what either I might have missed or what is causing this problem?

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  • Specification Pattern vs Spec in BDD

    - by cadmium
    I'm trying to explore Behavior Driven Design and Domain Driven Design. I'm getting that written specifications drive the tests in BDD, but also that business logic can be encapsulated using the specification pattern for re-use in domain objects and repositories, etc. Are these basically the same concept just used in different ways, used in conjunction together, or am I completely confusing the concepts? Please shed some light, if possible.

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  • Titanium vs The Native Tools

    - by Elfira
    Hi, I'm still checking everything out. I'm wondering what the limitations are if we develop the app using Titanium. What cannot be done using Titanium, for iPhone and for Android? What things can only be done using only the the native tools? I heard that performance could be an issue. How bad is this going to be? Thank you in advance. :)

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  • Blackberry Widget vs Java SDK

    - by rithanyalaxmi
    Hi, I am a newbie to this forum,I was going through the documents of both Blackberry Widget and Java SDK. I have the following doubts to get clarified:- 1) Advantages and disadvantages of Java SDK and Widget SDK? 2) When to go for Java SDK and Widget SDK? 3) Both Java and Widget applications require the latest blackberry OS 5.0? OR whether they are compatible with the lower versions as well? 4) Whatever developed with Java SDK can be done with widget SDK? similarly the vice-versa? 5) Is it possible to create the .java classes for Widget application development? 6) Whether all the blackberry models supports both Java and Widget ? 7) What are the Databases the blackberry Java and Widget supports? Please do shed some light into this as i was unable to find a suitable documentation on these. Thanks, Rithu

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  • Svn vs Git

    - by rudigrobler
    I am starting a new distributed project where some of the developers will not be in the same country... What should I use: Git or SVN? Why? PS. It is a smart client application running on windows and will be developed using Visual Studio [UPDATE] And does it work on MacOS (Not required but interesting to know)?

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  • Castle Windsor: Inject NameValueCollection vs. Dictionary

    - by Aren B
    I've already done many configs where dictionaries are passed into services in the <parameters> block. But what I find myself needing right now is to build a NameValueCollection (allowing multiple entries with the same key) or a Collection of KeyValuePair objects. The reason for this is im not using this dictionary to look up b when given a, im basically using it to pass in a Tuple (pair) of (a,b) to be used later in code. Im kind of new to castle windor and I was wondering how i would go about making a List of KeyValuePair's injected, or a NameValueCollection injected.

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  • Scala actors: receive vs react

    - by jqno
    Let me first say that I have quite a lot of Java experience, but have only recently become interested in functional languages. Recently I've started looking at Scala, which seems like a very nice language. However, I've been reading about Scala's Actor framework in Programming in Scala, and there's one thing I don't understand. In chapter 30.4 it says that using react instead of receive makes it possible to re-use threads, which is good for performance, since threads are expensive in the JVM. Does this mean that, as long as I remember to call react instead of receive, I can start as many Actors as I like? Before discovering Scala, I've been playing with Erlang, and the author of Programming Erlang boasts about spawning over 200,000 processes without breaking a sweat. I'd hate to do that with Java threads. What kind of limits am I looking at in Scala as compared to Erlang (and Java)? Also, how does this thread re-use work in Scala? Let's assume, for simplicity, that I have only one thread. Will all the actors that I start run sequentially in this thread, or will some sort of task-switching take place? For example, if I start two actors that ping-pong messages to each other, will I risk deadlock if they're started in the same thread? According to Programming in Scala, writing actors to use react is more difficult than with receive. This sounds plausible, since react doesn't return. However, the book goes on to show how you can put a react inside a loop using Actor.loop. As a result, you get loop { react { ... } } which, to me, seems pretty similar to while (true) { receive { ... } } which is used earlier in the book. Still, the book says that "in practice, programs will need at least a few receive's". So what am I missing here? What can receive do that react cannot, besides return? And why do I care? Finally, coming to the core of what I don't understand: the book keeps mentioning how using react makes it possible to discard the call stack to re-use the thread. How does that work? Why is it necessary to discard the call stack? And why can the call stack be discarded when a function terminates by throwing an exception (react), but not when it terminates by returning (receive)? I have the impression that Programming in Scala has been glossing over some of the key issues here, which is a shame, because otherwise it's a truly excellent book.

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