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  • std::bind overload resolution

    - by bpw1621
    The following code works fine #include <functional> using namespace std; using namespace std::placeholders; class A { int operator()( int i, int j ) { return i - j; } }; A a; auto aBind = bind( &A::operator(), ref(a), _2, _1 ); This does not #include <functional> using namespace std; using namespace std::placeholders; class A { int operator()( int i, int j ) { return i - j; } int operator()( int i ) { return -i; } }; A a; auto aBind = bind( &A::operator(), ref(a), _2, _1 ); I have tried playing around with the syntax to try and explicitly resolve which function I want in the code that does not work without luck so far. How do I write the bind line in order to choose the call that takes the two integer arguments?

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  • The Apple iPad &ndash; I&rsquo;m gonna get it!

    - by Sahil Malik
    Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). Well, heck, here comes another non-techie blogpost. You know I’m a geek, so I love gadgets! I found it RATHER interesting to see all the negative news on the blogosphere about the iPad. The main bitch points are - No Multi tasking No Flash Just a bigger iPhone. So here’s the deal! My view is, the above 3 are EXACTLY what I had personally hoped for in the Apple iPad. Before the release, I had gone on the record saying - “If the Apple Tablet is able to run full fledged iTunes (so I can get rid of iTunes on my desktop, I don’t like iTunes on Windows), can browse the net, can read PDFs, and will be under $1000, I’ll buy it”. Well, so, the released iPad wasn’t exactly like my dream tablet. The biggest downer IMO was it’s inability to run full iTunes. But, really, in retrospect, I like the newly released iPad. And here is why. No Multi tasking and No Flash, means much better battery life. Frankly, I rarely multi task on my laptop/desktop .. yeah I know my OS does .. but ME – I don’t multi task, and I don’t think you do either!! As I type this blogpost, I have a few windows running behind the scenes, but they are simply waiting for me to get back to them. The only thing truly running and I am making use of, other than this blogost, is media player playing some music – which the iPad can do. Also, I am logged into IM/Email – which again, iPad can do via notifications. It does the limited multitasking I need, without chewing down on batteries. Smart thinking, precisely the reason I love the iPhone. I don’t want a bulky battery consuming machine. Lack of flash? Okay sure, I can’t see Hulu on my iPad. That’s some loss. I can see youtube. Also, per Adobe I can’t see some porn sites, which I don’t want to see on my iPad. But, Flash is heavy. Especially flash video. My dream is to see silverlight run on the iPhone and iPad. No flash = not such a big loss. Speaking of battery life – 10 hours is plenty. I haven’t been away from electricity for that long usually, so I’m okay with charging it up when it runs low. It’s really not such a big deal honestly. Finally, eBook functionality – wow! I went on the record saying, eBook readers are not for me, but seriously, the iPad is perfect for my eBook needs at least. And as far it being just a bigger iPhone? I’ve always wanted a bigger iPhone, precisely for the eBook reading experience. I love my iPhone, I love the apps on it. The only thing that sucks about the iPhone is battery life, but other than that, it is the best gadget I have ever bought! And something that runs on mobile chips, is that thin, and those newly written apps .. mail, calendar .. I am very very excited to get my iPad, which will be the 64gig 3G version. The biggest plus in an iPad ……… no contract on data. I am *hoping*, this means that I can buy a SIM card in Europe, and use the iPad here. That would be killer awesome! But hey, if I had to pick downers in the iPad, they would be - - I wish they had a 128G Version. Now that we have a good video viewing machine, I know I’d chew up space quickly.- Sync over WIFI, seriously Apple.  Both for iPhone and iPad.- 3 month wait!!- Existing iPhone users should get a discount on the iPad data plan. Comment on the article ....

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  • Windows 7 backup keeps trying to backup non-existent file and folders

    - by Ayusman
    My Windows 7 system backup keeps trying to back up 2 non existent file and one folder. I have double checked that these files do not exist. How does windows 7 try to backup that does not exist and then complain and fails the backup? Here is the messages: Backup encountered a problem while backing up file D:\Non library songs\Klub Arabia. Error:(The system cannot find the file specified. (0x80070002)) Backup encountered a problem while backing up file D:\Non library songs\Klub Arabia 2. Error:(The system cannot find the file specified. (0x80070002)) Backup encountered a problem while backing up file D:\Data\FRIENDS. Error:(The system cannot find the file specified. (0x80070002)) These file/folders may have been there at some point but have since been moved. Any idea how to solve this? Does this mean all other content has been backed up successfully? I have windows 7 professional 64bit and I am backing up my Win7 machine to an external hard drive. Ayusman

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  • Certificate revocation check fails for non-domain guest in spite of accessible CRL

    - by 0xFE
    When we try to use certificates on computers that are not part of the domain, Windows complains that The revocation function was unable to check revocation because the revocation server was offline. However, if I manually open the certificate and check the CRL Distribution Point property, I see an ldap:/// URL and an http:// URL that points to externally-accessible IIS site that hosts the CRLs. Of course, the non-domain-joined client cannot access the ldap:/// URL, but it can download the CRL from the http:// link (at least in a browser). I enabled CAPI logging and I see the event that corresponds to this failed revocation check. The RevocationInfo section is: RevocationInfo [ freshnessTime] PT11H27M4S RevocationResult The revocation function was unable to check revocation because the revocation server was offline. [ value] 80092013 CertificateRevocationList [ location] UrlCache [ url] http://the correct URL [fileRef] 6E463C2583E17C63EF9EAC4EFBF2AEAFA04794EB.crl [issuerName] the name of the CA Furthermore, I can see the HTTP request to the correct URL and the server's response (HTTP 304 Not Modified) with Microsoft Network Monitor. I ran certutil -verify -urlfetch, and it seems to show the same thing: the computer recognizes both URLs, tries both, and even though the http:// link succeeds, returns the same error. Is there a way to have non-domain-joined clients skip the ldap:/// link and only check the http:// one? Edit: The ldap:/// URL is ldap:///CN=<name of CA>,CN=<name of server that is running the CA>,CN=CDP,CN=Public Key Services,CN=Services,CN=Configuration,DC=<domain name>?certificateRevocationList?base?objectClass=cRLDistributionPoint The non-domain-joined clients may be on the domain network or on an external network. The http:// CDP is accessible from the public internet.

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  • When to use closure?

    - by shahkalpesh
    I have seen samples of closure from - http://stackoverflow.com/questions/36636/what-is-a-closure Can anyone provide simple example of when to use closure? Specifically, scenarios in which closure makes sense? Lets assume that the language doesn't have closure support, how would one still achieve similar thing? Not to offend anyone, please post code samples in a language like c#, python, javascript, ruby etc. I am sorry, I do not understand functional languages yet.

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  • Abstraction is for lame programmers ? [closed]

    - by Zaban Khuli
    Hi, there's this senior developer in my company who's (in his own opinion) a pretty good C programmer. I happen to be from functional background (ML, to be specific) and so for me composition and abstraction are the two basic elements of programming. But this MrSmartyPants has got some kind of superiority complex and he'd always argue with me that abstraction is for lame programmers and _real_ programmers do not need it. Is it a problem with this guy or all C programmers have this opinion that abstraction is for lame programmers?

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  • Can immutable be a memory hog?

    - by ciscoheat
    Let's say we have a memory-intensive class like an Image, with chainable methods like Resize() and ConvertTo(). If this class is immutable, won't it take a huge amount of memory when I start doing things like i.Resize(500, 800).Rotate(90).ConvertTo(Gif), compared to a mutable one which modifies itself? How to handle a situation like this in a functional language?

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  • Monad in plain English?

    - by fig-gnuton
    In terms that an OOP programmer would understand (without any functional programming background), what is a monad? What problem does it solve and what are the most common places it's used?

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  • Does Scheme work with Microsoft COM?

    - by Martin
    I'm new to Scheme -- the functional programming language and I like it a lot for its first-class/higher-order functions. However, my data comes from a COM source with an object-oriented API. I know Scheme and COM belong to different programming paradigms, but I'm wondering if there is any interface or a way for Scheme to connect to a COM source? Thanks.

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  • How to set RAILS_ENV variable when running Rails tests?

    - by Jason
    In both my environment.rb and test_helper.rb files I have: ENV["RAILS_ENV"] = "development" I have one functional test written, however when I run it, the script tries to connect to my database using the "test" configuration settings which are in the database.ymal file & won't connect the the database. How can I run my tests using the "development" environment settings?

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  • How can I demonstrate the benefits of abstractions to an old-time C programmer?

    - by Zaban Khuli
    Hi, there's this senior developer in my company that programs in C. I happen to be from functional background (ML, to be specific). This senior C programmer refuses to use abstractions because "abstraction is for lame programmers and _real_ programmers do not need it." I can not seem to convince him otherwise Is it a problem with only this programmer or do all C (and other lower level language) programmers have this opinion that abstraction is for lame programmers?

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  • Why did you decide "against" using Erlang?

    - by Zubair
    Have you actually "tried" (means programmed in, not just read an article on it) Erlang and decided against it for a project? If so, why? Also, if you have opted to go back to your old language, or to use another functional language like F#, Haskell, Clojure, Scala, or something else then this counts too, and state why.

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  • When would you choose C# over F#? [closed]

    - by Rosdi
    Possible Duplicate: What are the benefits of using C# vs F# or F# vs c#? There are a lot of general questions comparing functional programming vs object oriented. But I need to know the advantageous of F# over C#. Assuming you have the same skill/experience/expertise in both C# and F#, and there are no other constraints (time, team skills, etc) when would you choose C# over F# (or vice-verse)?**

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  • How does pattern matching work behind the scenes in F#?

    - by kryptic
    Hello Everyone, I am completely new to F# (and functional programming in general) but I see pattern matching used everywhere in sample code. I am wondering for example how pattern matching actually works? For example, I imagine it working the same as a for loop in other languages and checking for matches on each item in a collection. This is probably far from correct, how does it actually work behind the scenes?

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  • Monad in plain English? (For the OOP programmer with no FP background)

    - by fig-gnuton
    In terms that an OOP programmer would understand (without any functional programming background), what is a monad? What problem does it solve and what are the most common places it's used? EDIT: To clarify the kind of understanding I was looking for, let's say you were converting an FP application that had monads into an OOP application. What would you do to port the responsibilities of the monads into the OOP app?

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  • Does it make sense to test ui components seperately?

    - by Bless Yahu
    I'm working on a webform that has about 15 user controls, separated by context (comments, locations, members/leaders, etc).   If each control can render individually (using real or test data), does it make sense to have a seperate "functional" test page to test them in isolation or is there a better way?

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  • Non breaking space in XAML vs. code

    - by Henrik Söderlund
    This works fine, and correctly inserts non-breaking spaces into the string: <TextBlock Text="Non&#160;Breaking&#160;Text&#160;Here"></TextBlock> But what I really need is to replace spaces with non-breaking spaces during data binding. So I wrote a simple value converter that replaces spaces with "&#160;". It does indeed replace spaces with "&#160;" but "&#160;" is displayed literally instead of showing as a non-breaking space. This is my converter: public class SpaceToNbspConverter : IValueConverter { #region IValueConverter Members public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { return value.ToString().Replace(" ", "&#160;"); } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } #endregion } Does anybody know why it works in XAML, but not in code? /Henrik

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  • WCF client and non-wcf client

    - by Lijo
    Hi, Could you please tell what is the difference between a WCF client and a non-WCF client? When I generate proxy of a WCF service using svcutil and put that in client, what is created - wcf client or non-wcf client? When should I use WCF client and non-WCF Client? Thanks Lijo

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  • Access static method from non static class possible in java and not in c#

    - by sagar_kool
    Access static method from non static class with object. It is not possible in C#. Where it is done by JAVA. How it works? example of java /** * Access static member of the class through object. */ import java.io.*; class StaticMemberClass { // Declare a static method. public static void staticDisplay() { System.out.println("This is static method."); } // Declare a non static method. public void nonStaticDisplay() { System.out.println("This is non static method."); } } class StaticAccessByObject { public static void main(String[] args) throws IOException { // call a static member only by class name. StaticMemberClass.staticDisplay(); // Create object of StaticMemberClass class. StaticMemberClass obj = new StaticMemberClass(); // call a static member only by object. obj.staticDisplay(); // accessing non static method through object. obj.nonStaticDisplay(); } } Output of the program: This is static method. This is static method. This is non static method. How to do this in C#? thanks in advance..

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