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  • Packing a long binary integer in Ruby

    - by user1056142
    I'm trying to send a very long binary integer over UDP (on the order of 200 bits). When I try to use Array's pack method, it complains the string I'm trying to convert is too large. Am I going about this the wrong way? ruby-1.8.7-p352 :003 > [0b1101001010101101111010100101010011010101010110010101010101010010010101001010101010101011101010101010101111010101010101010101].pack('i') RangeError: bignum too big to convert into `unsigned long' from (irb):3:in `pack' from (irb):3 This number is supposed to represent a DNS query packet (this is for a homework assignment; we're not allowed to use any DNS libraries).

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  • error in GP installation

    - by Rahul khanna
    Hi all, I know this is not the forum to post installation problem, though i am posting this type problem because i am helpless. Pls someobody give me some idea. After installing the GP10.0 while i run the GP Utility for server installation. In between installation i got the following error. I have SQL2000 data base and created the System DSN for and tested successfully. Pls somebody help me what is this error about. The following SQL statement produced an error: create procedure smRuleTestSendMail @emailid varchar(255), @ccids varchar(255), @bccids varchar(255), @emailmsg varchar(255) as if substring(CONVERT(varchar(128), SERVERPROPERTY('ProductVersion')),1,PATINDEX('%.%', CONVERT(varchar(128), SERVERPROPERTY('ProductVersion'))) - 1) < 9 begin exec master.dbo.xp_sendmail @recipients=@emailid, @copy_recipients=@ccids, @blind_copy_recipients=@bccids, @message=@emailmsg, @Subject='TEST message from SQL Server' end else begin if PATINDEX ('%64-bit%',@@version) 0 begin exec msdb.dbo.sp_send_dbmail @recipients=@emailid, @copy_recipients=@ccids, @blind_copy_recipients=@bccids, @body=@emailmsg, @subject='TEST message from SQL Server' end else begin exec master.dbo.xp_sendmail @recipients=@emailid, @copy_recipients=@ccids, @blind_copy_recipients=@bccids, @message=@emailmsg, @Subject='TEST message from SQL Server' end end

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  • How can I use partial views in ASP.NET?

    - by kavitha desai
    I have done partial views in ASP.NET MVC but now I want to convert it to ASP.NET. I have used AJAX and JavaScript. How can I convert the following: <a href="#" onclick="LoadPartialView('#MainContentDiv', '<%=Url.Action("AdminHome", "Admin")%>')">Home</a> , <input type="button" value="Submit" onclick="LoadPartialViewPost('#MainContentDiv', '<%=Url.Action("ViewPage", "Controller")%>', $('form').serialize())" /> to ASP.NET, or in other words, how can I load a partial view in ASP.NET?

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  • jQuery.each for lists and non-lists

    - by Brian M. Hunt
    I've a jQuery.each(data, foo), where data is either a string or a list of strings. I'd like to know if there's an existing utility function to convert the string to a list, or otherwise perform foo on just the string. So instead of the easy route: if (!$.isArray(data)) { foo(0, data); // can't rely on `this` variable } else { $.each(data,foo); } I was just wondering if there was already a builtin function of jQuery or Javascript that would convert data to a list automatically, like this: function convert_to_list(data) { return $.isArray(data) ? data : [data]; } $.each(convert_to_list(data), foo); Just curious! Thanks for reading. Brian

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  • Using boost::iostreams to parse a binary file byte by byte

    - by Zsol
    So I would like to parse a binary file and extract some data from it. The problem I am facing with this is that I need to convert a stream of chars to a stream of unsigned chars. Reading the boost documentation, it seems that boost::iostreams::code_converter should be the solution for this, so I tried this: typedef unsigned char uint8_t; typedef boost::iostreams::stream<boost::iostreams::code_converter< boost::iostreams::basic_array_source<uint8_t> >, std::codecvt<uint8_t, char, std::mbstate_t> > array_stream; The idea was to specify a codecvt with InternalType=uint8_t and ExternalType=char. Unfortunately this does not compile. So the question is: how do I convert a stream of chars to a stream of uint8_ts?

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  • [SOLVED] Store files in C# EXE file

    - by sublay
    It is actually useful for me to store some files in EXE to copy to selected location. I'm generating HTML and JS files and need to copy some CSS, JS and GIFs. Snippet System.IO.File.WriteAllBytes(@"C:\MyFile.bin", ProjectNamespace.Properties.Resources.MyFile); doesn't work for me! On "WriteAllBytes" it says: "cannot convert from 'System.Drawing.Bitmap' to 'byte[]'" for image and "cannot convert from 'string' to 'byte[]'" for text file. Help! UPDATE: Solved below.

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  • Invalid view state exception in asp.net. do you know any solution?

    - by mmtemporary
    this problem make me crazy! i have asp.net website it raise periodically this error (in IE8): System.Web.HttpException: Invalid viewstate. at System.Web.UI.Page.DecryptStringWithIV(String s, IVType ivType) at System.Web.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler .ProcessRequest(HttpContext context) ,... or (in IE6) System.FormatException: Invalid length for a Base-64 char array. at System.Convert.FromBase64String(String s) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) or (in IE7) System.FormatException: Invalid character in a Base-64 string. at System.Convert.FromBase64String(String s) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) i set enableViewStateMac in web.config to false and defined machinekey in my web.config and defined UTF-8 encoding for every page but i received this errors. do you have any solution? best regards

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  • Encoding problem with preg_replace() and scandir()

    - by itarato
    Hi, On OS-X (PHP5.2.11) I have a file: siësta.doc (and thousand other with Unicode filenames) and I want to convert the file names to a web-consumable format (a-zA-Z0-9.). If I hardcode the file name above I can do the right conversion: <?php $file = 'siësta.doc'; echo preg_replace("/[^a-zA-Z0-9.]/u", '_', $file); // Output: si_sta.doc ?> But if I read the file names with scandir, I've got strange conversions: <?php $files = scandir(DIRNAME); foreach ($files as $file) { echo preg_replace("/[^a-zA-Z0-9.]/u", '_', $file); // Output for the file above: sie_sta.doc } ?> I tried to detect the encoding, set the encoding, convert it with iconv functions. I tried the mb_ functions also. But it was just worse. What did I do wrong? Thanks in advance

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  • dotConnect LINQ to MySQL Issue

    - by Saravanan I M
    I am using dotConnect LINQ to MySQL and i have the following error. what would be the cause for this issue annot convert parameter value of type 'System.String' to MySQL type 'MySqlType.TimeStamp'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Cannot convert parameter value of type 'System.String' to MySQL type 'MySqlType.TimeStamp'. Source Error: Line 93: { Line 94: string loginLowered = login.ToLower(); Line 95: return context.ISVs.Where(u = u.Email == loginLowered).SingleOrDefault() == null; Line 96: Line 97: }

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  • Context free grammer

    - by Evil
    Hello. I have this problem where i need to convert the following CFG to CFG in CNF. S- ABa A- aab B- Ac I know the steps are as follows. 1) Remove epsilon transitions - Done 2) remove unit productions 3) convert to CNF by: 3.1] introduce a new non terminal for each term 3.2] replace terminals in the productions rules with the new nonterminal 3.3] introduce new nonterminals to reduce the length of the right side of each production i'm a bit confused on how i would do that with the problem above. Mostly i am confused on step 2 and unit productions. If i could get some help or perhaps a link to a good tutorial that would be most helpful.

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  • C# WCF/WebService: Interoperable exception handling.

    - by michael paul
    I understand that WCF will convert an exception into a fault and send it back as a SOAP message, but I was wondering if this is truly interoperable. I guess I'm having a tough time trying to figure out this possible scenario: Client (Java) calls a WCF Service (LoginService). Server checks for proper authorization, user authorization fails. Server throws an UnauthorizedAccessException. WCF converts this into a Fault somehow. (* - See Below As Well) Client has to be able to know how to read this Fault. I guess I'm just having a tough time understanding how this could still be interoperable because it is expecting Java to know how to translate a SOAP Fault that .NET encodes from an UnauthorizedAccessException. Also, how does .NET actually convert the exception to a fault, what goes in as the fault code, name, etc. Some of the things seem to be "duh"s like perhaps the Fault Name is "UnauthorizedAccessException", but I'd rather know for sure than guess.

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  • Can someone describe through code a practical example of backtracking with iteration instead of recursion?

    - by chrisapotek
    Recursion makes backtracking easy as it guarantees that you won't go through the same path again. So all ramifications of your path are visited just once. I am trying to convert a backtracking tail-recursive (with accumulators) algorithm to iteration. I heard it is supposed to be easy to convert a perfectly tail-recursive algorithm to iteration. But I am stuck in the backtracking part. Can anyone provide a example through code so myself and others can visualize how backtracking is done? I would think that a STACK is not needed here because I have a perfectly tail-recursive algorithm using accumulators, but I can be wrong here.

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  • Add columns to a datatable in c#?

    - by Pandiya Chendur
    I have a csv reader class that reads a .csv file and its values.... I have created datatable out of it... Consider my Datatable contains three header columns Name,EmailId,PhoneNo.... The values have been added successfully.... Now i want to add two columns IsDeleted,CreatedDate to this datatable... I have tried this but it doesn't seem to work, foreach (string strHeader in headers) { dt.Columns.Add(strHeader); } string[] data; while ((data = reader.GetCSVLine()) != null) { dt.Rows.Add(data); } dt.Columns.Add("IsDeleted", typeof(byte)); dt.Columns.Add(new DataColumn("CreatedDate", typeof(DateTime))); foreach (DataRow dr in dt.Rows) { dr["IsDeleted"] = Convert.ToByte(0); dr["CreatedDate"] = Convert.ToDateTime(System.DateTime.Now.ToString()); dt.Rows.Add(dr); } When i try to add isdeleted values an error saying This row already belongs to this table. ....

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  • fastercsv parsing to int or other into ActiveRecord

    - by Schroedinger
    I'm currently importing a CSV into an activerecord element but can't choose to parse the elements as say ints or decimals on a case by case basis using fastercsv. I can either choose to parse everything as an int or the other, or all as strings. I need to parse some columns as ints, some as decimals and some as strings. Otherwise, is there a way after I've parsed everything as strings to convert and update individual elements in the activerecord to the new form? Say parse values in as strings then convert certain values to ints, others to decs, etc?

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  • Mix RGB colors (L*a*b*)

    - by Samuel
    Hello! Basically I want two mix two colours color1 and color2. Since simple calculation's bring up stuff like blue+yellow = grey ((color1.r + color2.r)/2 etc) i did some research and found that apparently mixing colors in order for the mixed color to look like we expect it too (e.g. blue+yellow = green) isn't that straight forward. What another stackoverflow post taught me was that in order two achieve the mixture correctly i'd have to use the L*a*b* space / CIELAB and linked to the wikipedia page about this topic. I found it informative but i couldn't really understand how to convert RGB to (sRGB and than to) L*a*b* - how to mix the obtained colors and how to convert back I hope somebody here can help me Thanks, Samuel

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  • Accessing Linq Values in ViewData

    - by Jemes
    I'm having trouble accessing the id, area and theme values in my ViewData. They are being set in my action filter but when I get to the Site.Master I don't have access to them. Any help or advice would be great. ActionFilter public override void OnActionExecuting(ActionExecutingContext filterContext) { int SectionID = Convert.ToInt32(filterContext.RouteData.Values["Section_ID"]); int CourseID = Convert.ToInt32(filterContext.RouteData.Values["Course_ID"]); if (CourseID == 0) { filterContext.Controller.ViewData["Styles"] = (from m in _dataContext.Styles where m.Area_ID == SectionID select new {theme = m.Area_FolderName }).ToList(); } else { filterContext.Controller.ViewData["Styles"] = (from m in _dataContext.Styles where m.Course_ID == CourseID select new { theme = m.Course_FolderName }).ToList(); } } } Site.Master <%@ Master Language="C#" Inherits="System.Web.Mvc.ViewMasterPage" % <%@ Import Namespace="Website.Models" % <% foreach (var c in (IEnumerable<Styles>)ViewData["Styles"]) { Response.Write(c.Theme); }%>

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  • Compile error when calling ToList() when accessing many to many with Linq To Entities

    - by KallDrexx
    I can't figure out what I am doing wrong. I have the following method: public IList<WObject> GetRelationshipMembers(int relId) { var members = from r in _container.ObjectRelationships where r.Id == relId select r.WObjects; return members.ToList<WObject>(); } This returns the following error: Instance argument: cannot convert from 'System.Linq.IQueryable<System.Data.Objects.DataClasses.EntityCollection<Project.DomainModel.Entities.WObject>>' to 'System.Collections.Generic.IEnumerable<Project.DomainModel.Entities.WObject>' How can I convert the EntityCollection to a list without lazy loading?

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  • Entity Framework - MySQL - Datetime format issue

    - by effkay
    Hello; I have a simple table with few date fields. Whenever I run following query: var docs = ( from d in base.EntityDataContext.document_reviews select d ).ToList(); I get following exception: Unable to convert MySQL date/time value to System.DateTime. MySql.Data.Types.MySqlConversionException: Unable to convert MySQL date/time value to System.DateTime The document reviews table has two date/time fields. One of them is nullable. I have tried placing following in connection string: Allow Zero Datetime=true; But I am still getting exception. Anyone with a solution?

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  • How can I get the Visual Studio 2010 converstion wizard to come back up?

    - by 2GDave
    When I first opened my website project with Visual Studio 2010 the conversion wizard came up and I said that I didn't want to convert the project. Now I'm ready to convert the project, but I can't find a shortcut or a way to get it back? I tried to remove the suo file, and that didn't do it. If I go into the project properties I can switch the target framework to 4.0, but that tells me it's going to close and reopen the project and I'll have to adjust the pages by hand - doesn't seem like very much fun. Anyone know how to get it to prompt again, or even a command line that would run it? Thank you!

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  • null-coalescing operator or conditional operator

    - by rkrauter
    Which coding style do you prefer: object o = new object(); //string s1 = o ?? "Tom"; // Cannot implicitly convert type 'object' to 'string' CS0266 string s3 = Convert.ToString(o ?? "Tom"); string s2 = (o != null) ? o.ToString() : "Tom"; s2 or s3? Is it possible to make it shorter? s1 does not obviously work.

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  • LabVIEW: converting numeric array to string array

    - by JaysonFix
    Using LabVIEW 2009, I have a VI that outputs an array of U64 integers. I'd like the user to be able to perform discrete selection from among the elements of this array. I'm thinking of accomplishing this by programmatically populating a Menu Ring (as shown at http://digital.ni.com/public.nsf/allkb/FB0409491FAB16FA86256D08004FCE7E). However, I apparently need to convert my array of U64 ints to an array of strings, as it is an array of strings that is used to populate the Menu Ring. My question: how can I convert the array of U64 ints to an array of strings?

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