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  • VB.NET SqlException Was Unhandled

    - by Daniel
    I am trying some SQL code but I get an error when I try this code. Main.database.ExecuteCommand("UPDATE Contacts SET first_name='" + c.first_name + _ "', middle='" + c.middle + _ "', last_name='" + c.last_name + _ "', age='" + c.age + _ "', mobile_phone='" + c.mobile_phone + _ "', home_phone='" + c.home_phone + _ "', work_phone='" + c.work_phone + _ "', home_street='" + c.home_street + _ "', home_city='" + c.home_city + _ "', home_state='" + c.home_state + _ "', home_zip='" + c.home_zip + _ "', work_street='" + c.work_street + _ "', work_city='" + c.work_city + _ "', work_state='" + c.work_state + _ "', work_zip='" + c.work_zip + _ "', home_www='" + c.home_www + _ "', work_www='" + c.work_www + _ "', home_email='" + c.home_email + _ "', work_email='" + c.work_email + _ "' WHERE first_name='" + c.first_name + _ "' AND last_name='" + c.last_name + "'") I get the following error Sql Exception was unhandled The data types text and varchar are incompatible in the equal to operator.

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  • Determining the State of a User using their Hostname

    - by PhpMyCoder
    Not sure if this is the right SE site. I figured this question doesn't belong on SO, but if you think it doesn't belong here either, I apologize. I've been looking into determining the location, specifically the state, of a user accessing my website. One of the options I've known about for a while is the GeoIP City Database, however this isn't the most cost effective solution and I'm cheap so I was looking for a less expensive way. Something that occurred to me was that my state was in the public hostname assigned to me by Comcast: (Dash Separated IP).hsd1.ma.comcast.net Could it be possible that other ISPs follow this same pattern of inserting the state abbreviation into their users' hostnames? I've been looking around for a list of hostnames for other ISPs, but I haven't found anything. Can anyone verify that this holds true for other major ISPs?

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  • SQL Server 2005/2008 Licensing Decision

    - by Hakim
    Hello, I have purchased a dedicated server from a reputable Hosting company. They only have Windows Server 2008 OS installed on it and NO Sql server. Server Configuration is Intel Dual core Processor with 2GB of RAM and 100GB HDD. I wanted to host my web services on that server which will be using the MS SQL Server 2005 at the backend.There are multiple web services and each using a different Database. Microsoft has CAL basis Licensing , Which I understand is based on number of users accessing the database directly ( I may be wrong ) . But my users will be accessing the webservice and no direct connection to the database as such. Yes but the number of users accessing the web server cannot be known and is not under my control. Which Licensing is best suited for this kind of setup ? I don't need analysing and BI services right now ,but i may want to upgrade that in future may be. Any help will be appreciated. Thanks

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  • How is animation accomplished in these apps?

    - by android noob
    Most of the Android users use the GO SMS app, and the iPhone users use their normal messaging app (Android rocks). Now, whenever a user types a message and presses the send button, the message's edit text field sets a glossy green background, also the green colored background comes floating at the back of the edit text field. How do they do it? (I have been searching this for a while, but was unable to find an answer.)

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  • iPhone memory management, a newbie question

    - by Reuven
    Hi, I've seen in (Apple) sample code two types of ways of allocation memory, and am not sure I understand the difference and resulting behavior. // FAILS NSMutableArray *anArray = [NSMutableArray array]; [anArray release]; // WORKS NSMutableArray *anArray1 = [[NSMutableArray alloc] init]; [anArray release]; By "FAILS" I mean I get crashes/runtime warnings etc., and not always as soon as I call the release... Any explanation appreciated. Thanks

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  • c++ std::ostringstream vs std::string::append

    - by NickSoft
    In all examples that use some kind of buffering I see they use stream instead of string. How is std::ostringstream and << operator different than using string.append. Which one is faster and which one uses less resourses (memory). One difference I know is that you can output different types into output stream (like integer) rather than the limited types that string::append accepts. Here is an example: std::ostringstream os; os << "Content-Type: " << contentType << ";charset=" << charset << "\r\n"; std::string header = os.str(); vs std::string header("Content-Type: "); header.append(contentType); header.append(";charset="); header.append(charset); header.append("\r\n"); Obviously using stream is shorter, but I think append returns reference to the string so it can be written like this: std::string header("Content-Type: "); header.append(contentType) .append(";charset=") .append(charset) .append("\r\n"); And with output stream you can do: std::string content; ... os << "Content-Length: " << content.length() << "\r\n"; But what about memory usage and speed? Especially when used in a big loop. Update: To be more clear the question is: Which one should I use and why? Is there situations when one is preferred or the other? For performance and memory ... well I think benchmark is the only way since every implementation could be different. Update 2: Well I don't get clear idea what should I use from the answers which means that any of them will do the job, plus vector. Cubbi did nice benchmark with the addition of Dietmar Kühl that the biggest difference is construction of those objects. If you are looking for an answer you should check that too. I'll wait a bit more for other answers (look previous update) and if I don't get one I think I'll accept Tolga's answer because his suggestion to use vector is already done before which means vector should be less resource hungry.

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  • Visual Studio Express 2012 - Moving items to tab control loses actions

    - by JohnP
    VS 2012 Express on Windows 7 Professional, this was pre SP1 install. I have a windows form that I had several elements (Listboxes, buttons, text and labels), with some actions associated with changing indices on the list boxes and of course the button actions. I decided I wanted to add a tab control to enable a second tab with a different feature set, so I copied/cut/pasted all of the original items to a tab control that I added. When I did this, all of the elements lost their click action in the events window. I had to go and re-associate all of them. Is this a normal behavior/known issue, or is there some method to move controls that I am not aware of?

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  • How can I add reflection to a C++ application?

    - by Nick
    I'd like to be able to introspect a C++ class for its name, contents (i.e. members and their types) etc. I'm talking native C++ here, not managed C++, which has reflection. I realise C++ supplies some limited information using RTTI. Which additional libraries (or other techniques) could supply this information?

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  • What is the best resource or method for learning more about servers and networking?

    - by kaleidomedallion
    I can get around a server to some degree, but everything I have learned has been as I have needed to learn it. Every once in a while I will learn about some new command that will revolutionize how I think about systems and networking, and realize how I could have been using it this whole time if only I had known about it. Anything to bring someone from novice to some kind of fluency? Do I just need to earn the battle scars bit by bit over the course of years? (I mean of course I do but what can I do to help it be not quite so painful?) For instance, I am still fuzzy on all of networking. Any help would be greatly appreciated.

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  • How to add a constructor to a subclassed numeric type?

    - by abbot
    I want to subclass a numeric type (say, int) in python and give it a shiny complex constructor. Something like this: class NamedInteger(int): def __init__(self, value): super(NamedInteger, self).__init__(value) self.name = 'pony' def __str__(self): return self.name x = NamedInteger(5) print x + 3 print str(x) This works fine under Python 2.4, but Python 2.6 gives a deprecation warning. What is the best way to subclass a numeric type and to redefine constructors for builtin types in newer Python versions?

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  • Is there a better way to declare an empty, typed matrix in MATLAB?

    - by Arthur Ward
    Is there a way to "declare" a variable with a particular user-defined type in MATLAB? zeros() only works for built-in numeric types. The only solution I've come up with involves using repmat() to duplicate a dummy object zero times: arr = repmat(myClass(), [1 0]) Without declaring variables this way, any code which does "arr(end+1) = myClass()" has to include a special case for the default empty matrix which is of type double. Have I missed something a little more sensible?

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  • Class destructor memory handling in C++

    - by wyatt
    What potential memory leaks won't an implicit destructor handle? I know that if you have anything stored on the heap it won't handle it, and if you have a connection to a file or a database, that needs to be handled manually. Is there anything else? What about, say, non-base data types like vectors? Also, in an explicit destructor, need you destroy non-heap variables which would have been destroyed by the implicit, or are they handled automatically? Thanks

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  • empty sharepoint user profile property throw an exception

    - by James123
    I have a user profile property. user not assigned any value that property. If I use below code. It is thorwing exception " object reference not set to an instance of an object " userprof["OptOut"].ToString() I tried all types like if (userprof["OptOut"] != null) OR if(userprof["OptOut"].Value != null) nothing worked out for me. Here userProf object has value. userprof["OptOut"].Value is null How to handle this?

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  • highlite text parts with jquery, best practice

    - by helle
    Hey guys, i have a list of items containig names. then i have a eventlistener, which ckecks for keypress event. if the user types i.g. an A all names starting with an A should be viewed with the A bold. so all starting As should be bold. what is the best way using jquery to highlite only a part of a string? thanks for your help

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  • SQL, Auxiliary table of numbers

    - by vzczc
    For certain types of sql queries, an auxiliary table of numbers can be very useful. It may be created as a table with as many rows as you need for a particular task or as a user defined function that returns the number of rows required in each query. What is the optimal way to create such a function?

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  • Really minimum lisp

    - by Mgccl
    What is the minimum set of primitives required such that a language is Turing complete and a lisp variant? Seems like car, cdr and some flow control and something for REPL is enough. It be nice if there is such list. Assume there are only 3 types of data, integers, symbols and lists.(like in picolisp)

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  • understanding a Build c++

    - by numerical25
    I think I know what a build is. But I am not sure. My definition of a build is another word for saying compiled application. Can someone please tell me what exactly a build is. And why do people ask for 2 types of builds. Such as Debug Build, Profile Build and a Release Build. What are the differences.

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  • Qt - serialize/deserialaize text plus picture

    - by Narek
    I want to use a field (kind of QTextEdit), which is capabale of storing picture and text (like MS Word is doing) and it serializes and deserialaizes picture+text data. Is there any Qt Widget that allows us to manipulate with picture and text simultaniously and it has set/get functions which operate with serializable type? In othger words, I want to know if there exsists any Qt widget that can store picture+text and has "get" types of function that returns the content of that widgets editable area, which is a Type that could be serialized with QDataStream.

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  • Bitwise operations in BC?

    - by user355926
    $ bc BC> ibase=2 BC> 110&101 // wanna get 100 (standar_in) 8: syntax error Wikipedia informs that the ops are "|, & and ^". It may be that they work only in certain BC-types or I misread something.

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  • Java - Regex problem

    - by Yatendra Goel
    I have list of urls of types: http://www.abc.com/pk/etc http://www.abc.com/pk/etc/ http://www.abc.com/pk/etc/etc where etc can be anything. So I want to search only those urls that contains www.abc.com/pk/etc or www.abc.com/pk/etc/

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