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  • Linux c++ error: undefined reference to 'dlopen'

    - by lerax
    Hi all! I work in Linux with c++ (eclipse) and want to use a library. Eclipse shows me an error: undefined reference to 'dlopen' Do you know a solution? Here is my code. #include <stdlib.h> #include <stdio.h> #include <dlfcn.h> int main(int argc, char **argv) { void *handle; double (*desk)(char*); char *error; handle = dlopen ("/lib/CEDD_LIB.so.6", RTLD_LAZY); if (!handle) { fputs (dlerror(), stderr); exit(1); } desk= dlsym(handle, "Apply"); if ((error = dlerror()) != NULL) { fputs(error, stderr); exit(1); } dlclose(handle); }

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  • help in security assignment

    - by scatman
    i have to write a program that sniffs network packets (part1-the simple part). and i have to update the program (part2) so that it will be able to terminate connections. the specific requirements are: construct raw packets by specifying data link layer and network layer information including appropriate source and destination MAC and IP addresses. These packets are intended to terminate the connection. To do so, you should used SOCK_RAW as the socket type to be able to set the header information by yourself. can anybody give me some ideas on the second part? should i hijack the session,apply a dos attack on one of the users?? all i need is some tips of how to terminate the connection. i am using c programming language. and this is a course assignment for the security course.

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  • XML DOM Manipuation

    - by kunalsawlani
    Hi, I am new to XML and have been trying some simple examples and they work fine. I want to do something like the following, but I am not able to figure out how to go about doing this. I have a HTML web page, where the user types in some data in an input field. I want to take that data, parse it to create an XML string, and the apply XSLT transformation to it, and display the result back on the page. All this needs to be done on the client browser, with JavaScript. If some one could point out the steps or the general procedure to go about doing this, it would be great. I have been looking over the net, but the information is so vast, that I have not been able to locate exactly what I need. Thanks

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  • 3d / 2.5d game library for iphone and pc

    - by Aaron Qian
    I'm trying to make a 2d shooter game with 3d background. The player and enemies are essentially just quads with textures. The background will be simple 3d polygons with textures and some fog and light. Therefore, I don't need a really powerful 3d library. I tried Unity3D and Torque2D, but I don't like to use their GUI editors. I prefer to work with code. So, is there a cross platform (mainly windows and iPhone) 3d / 2.5d game library, commercial or open source? I assume it will be only limited to c, c++, and object-c due to apple's new ToS.

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  • University System Automation, how the internal system of a university works?

    - by Zia ur Rahman
    Hay dear! Suppose we want to make a software , we want to automate the system of university. Suppose a student apply in the university for a certain course, now the question is where the application form of the student will go and what process will be done on this form and then what is the next stage of this form and why it will go to the next stage? Now I hope you have got my point. I need information from the enrollment of a student to its pass out. Or provide a state transition diagram or Data flow diagram. I will be very thankful.

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  • Compute rolling window covariance matrix

    - by user1665355
    I am trying to compute a rolling window (shifting by 1 day) covariance matrix for a number of assets. Say my df looks like this: df <- data.frame(x = 0:4, y = 5:9,z=1:5,u=4:8) How would a possible for loop look like if I want to calculate a covariance matrix on a rolling basis by shifting the rolling window by 1 day? Or should I use some apply family function? What time series class would be preferrable if I want to create a time series object for the loop above? I simply can't get it... Best Regards

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  • What jquery based table plugin can hide sub rows?

    - by user1458290
    I'm in the need to convert excel macros into jquery code, the function is that you need to click on the plus sign to unfold and show the sub rows to modify column2 if you want to type values in column2, the other columns can't be modified. You can't straightly modify values of column2 until you unfold the parent row, because there are many sub rows belonging to parent row,say Car. The values of Name, Model, Code are existing, they are master data, no need to type or modify. please see the snapshot at folded and unfolded, besides modifying values in sub rows , I need to be able to know which sub rows are modified and values of those rows.Initially the editable columns are blank. And when you click on the minus sign, the sub rows can be folded again,but the modified values won't be lost,they are still there when unfolded again. One last requirement is it's cross devices, the code must run well on pc,mobile phone,pad. Is that possible? Many thanks.

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  • How to skip the invalid rows while inserting the data into Database

    - by Dinesh
    We have a statement., that is inserting some rows in a temporary table (say e.g., 10 rows), while inserting 5th row, it has some issue with one of the column format and giving an error and then it stopped inserting the rows. What I want is, it should skip the error rows and insert valid rows. For those error rows, it can skip that error column and insert with some null value & different status. create table #tb_pagecontent_value (pageid int,formid uniqueidentifier, id_field xml,fieldvalue xml,label_final xml) … … insert into #tb_pagecontent_xml select A.pageid,B.formid,A.PageData.query('/CPageDataXML/control') from Pagedata A inner join page B on A.PageId=B.PageId inner join FormAssociation C on B.FormId=C.FormId where B.pageid in (select pageId from jobs where jobtype='zba' and StatusFlag!=1) in the above e.g., I want to apply that logic. Any help is appreciated.

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  • Floating images with multiple sizes in CSS

    - by Jamie Chapman
    I'm wanting to be able to create a banner of floating images based on what are uploaded via users. The tool needs to have images of 50x50 and 100x100. At the moment, I just want to randomly display the images and tried to apply float:left. However, as you can see below - it leaves gaps. Is there an easy way to do this without programatically positioning the images? If you want the code so far, it's here: .wall { width: 300px; background-color: red; display: table; } .wall img { float: left; } and <div class="wall"> <img src="man1.png" alt=""/> <!-- ETC... !--> </div>

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  • MS Access: Order of Events in event ApplyFilter (ADP Project)

    - by Jose Valdes
    I'm having problems with the execution of ServerFilterByForm in Access 2003 When I apply the entered filter it returns the requested data but after it appear on screen (Form) it disappears. Don't know why this is happening Does anyone had the same problem? How can it be solved? Heris is part of the code Private Sub Form_ApplyFilter(Cancel As Integer, ApplyType As Integer) Dim stSql As String If Len(ServerFilter) > 0 Then stSql = "SELECT * FROM v_InitialReviewQuery " & _ " WHERE " + ServerFilter & _ " ORDER BY acctnumber" Else stSql = "SELECT top 1 * FROM v_InitialReviewQuery ORDER BY acctnumber" End If Me.RecordSource = stSql End Sub

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  • GWT - RichTextArea - ScrollTo

    - by Yanick Rochon
    If I have an RichTextArea like this : RichTextArea rta = new RichTextArea(); rta.setHTML("<p id=\"foo\">Foo</p>....<p id=\"bar\">Bar</p>"); If I extend the RichTextArea class, how would be the proper way (cross-browser wise) to write a scrollTo() method? Ex: class RichTextAreaExt extends RichTextArea { ... public native void scrollTo(String element) /*-{ // the underlaying DOMElement is an iframe, so.... }-*/; ... } Thanks!

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  • SQLite not pluralizing Table Names

    - by weenet
    I am using SQLite as my db during development, and I want to postpone actually creating a final database until my domains are fully mapped. So I have this in my Global.asax.cs file: private void InitializeNHibernateSession() { Configuration cfg = NHibernateSession.Init( webSessionStorage, new [] { Server.MapPath("~/bin/MyNamespace.Data.dll") }, new AutoPersistenceModelGenerator().Generate(), Server.MapPath("~/NHibernate.config")); if (ConfigurationManager.AppSettings["DbGen"] == "true") { var export = new SchemaExport(cfg); export.Execute(true, true, false, NHibernateSession.Current.Connection, File.CreateText(@"DDL.sql")); } } The AutoPersistenceModelGenerator hooks up the various conventions, including a TableNameConvention like so: public void Apply(FluentNHibernate.Conventions.Instances.IClassInstance instance) { instance.Table(Inflector.Net.Inflector.Pluralize(instance.EntityType.Name)); } This is working nicely execpt that the sqlite db generated does not have pluralized table names. Any idea what I'm missing? Thanks.

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  • MySQL inner join different results

    - by Darryl at NetHosted
    I am trying to work out why the following two queries return different results: SELECT DISTINCT i.id, i.date FROM `tblinvoices` i INNER JOIN `tblinvoiceitems` it ON it.userid=i.userid INNER JOIN `tblcustomfieldsvalues` cf ON it.relid=cf.relid WHERE i.`tax` = 0 AND i.`date` BETWEEN '2012-07-01' AND '2012-09-31' and SELECT DISTINCT i.id, i.date FROM `tblinvoices` i WHERE i.`tax` = 0 AND i.`date` BETWEEN '2012-07-01' AND '2012-09-31' Obviously the difference is the inner join here, but I don't understand why the one with the inner join is returning less results than the one without it, I would have thought since I didn't do any cross table references they should return the same results. The final query I am working towards is SELECT DISTINCT i.id, i.date FROM `tblinvoices` i INNER JOIN `tblinvoiceitems` it ON it.userid=i.userid INNER JOIN `tblcustomfieldsvalues` cf ON it.relid=cf.relid WHERE cf.`fieldid` =5 AND cf.`value` REGEXP '[A-Za-z]' AND i.`tax` = 0 AND i.`date` BETWEEN '2012-07-01' AND '2012-09-31' But because of the different results that seem incorrect when I add the inner join (it removes some results that should be valid) it's not working at present, thanks.

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  • Applying a function with multiple inputs using Map? (Haskell)

    - by Schroedinger
    G'day guys, Trying currently to finish up a bit of homework I'm working on, and having an issue where I'm trying to apply map across a function that accepts multiple inputs. so in the case I'm using processList f (x:xs) = map accelerateList f xs x xs processList is given a floating value (f) and a List that it sorts into another List Accelerate List takes a floating value (f) a List and a List Object through which it returns another List Object I know my Accelerate List code is correct, but I cannot for the life of me get the syntax for this code working: processList :: Float -> [Object] -> [Object] accelerate f [] = [] accelerate f [x] = [(accelerateForce f x x)] accelerate f (x:xs) = map accelerateList f xs x xs Any ideas? I've been scratching my head for about 3 hours now. I know it's something really simple.

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  • Poster image on embedded youtube video

    - by Srijan Deshpande
    Hi, I want to embed a youtube video on my website and I need to replace the default poster image that shows up on the video with a jpg of my own. The default image that shows up is a scaled-up thumbnail and is therefore very blurry and pixelated and I need to use a hi-res jpg in place of it. I'm aware that youtube only allows us to pick one of three auto-generated thumbnails, but does that restriction also apply to youtube videos embedded on an external website? If so, is there an alternate way to do this? Thanks!

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  • routine to generate a 2d array from two 1d arrays and a function

    - by intuited
    I'm guessing that there's a word for this concept, and that it's available in at least some popular languages, but my perfunctory search was fruitless. A pseudocode example of what I'd like to do: function foo(a, b) { return a * b // EG } a = [ 1, 2, 3 ] b = [ 4, 5, 6 ] matrix = the_function_for_which_I_search(foo, [a, b] ) print matrix => [ [ 4, 8, 12], [5, 10, 15], [6, 12, 18] ] // or function concatenate(a,b) return a.b } print the_function_for_which_I_search( concatenate, [ a, b ]) => [ [ '14', '24', '34'], ['15', '25', '35'], [16', '26', '36'] ] In other words, function_for_which_I_search will apply the function given as its first argument to each combination of the elements of the two arrays passed as its second argument, and return the results as a two-dimensional array. I would like to know if such a routine has a common name, and if it's available in a python module, cpan package, ruby gem, pear package, etc. I'm also wondering if this is a core function in other languages, maybe haskell or R?

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  • Sort a GridView Column related to other Table

    - by Tim
    Hello, i have a GridView bound to a DataView. Some columns in the DataView's table are foreignkeys to related tables(f.e. Customer). I want to enable sorting for these columns too, but all i can do is sorting the foreignkey(fiCustomer) and not the CustomerName. I have tried this without success(" Cannot find column ERP_Customer.CustomerName "): <asp:TemplateField HeaderText="Customer" SortExpression="ERP_Customer.CustomerName" > A tried also the DataViewManager, but i've a problem to detect the table to sort: Dim viewManager As New DataViewManager(Me.dsERP) viewManager.DataViewSettings(dsERP.ERP_Charge).RowFilter = filter viewManager.DataViewSettings(dsERP.ERP_Charge).Sort = sort 'sort is the GridView's SortExpression Me.GrdCharge.DataSource = viewManager.CreateDataView(dsERP.ERP_Charge) I have to apply the sort on a distinct table of the DataViewManager, but this table would differ on the related tables. I have bound the TemplateColumns in Codebehind in RowDataBound-Event f.e.: Dim LblCustomer As Label = DirectCast(e.Row.FindControl("LblCustomer"), Label) LblCustomer.Text = drCharge.ERP_CustomerRow.CustomerName 'drCharge inherits DataRow What is the recommended way to sort a GridView on columns related to another table?

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  • Sorting a meta-list by first element of children lists in Python

    - by thismachinechills
    I have a list, root, of lists, root[child0], root[child1], etc. I want to sort the children of the root list by the first value in the child list, root[child0][0], which is an int. Example: import random children = 10 root = [[random.randint(0, children), "some value"] for child in children] I want to sort root from greatest to least by the first element of each of it's children. I've taken a look at some previous entries that used sorted() and a lamda function I'm entirely unfamiliar with, so I'm unsure of how to apply that to my problem. Appreciate any direction that can by given Thanks

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  • Correct handling of return data

    - by Serhiy
    Hello, I have a question related to correct handling of returns of the DAO library I'm writing for one project. This library probably is going to be used by another people and I want to do it correctly. So I would like to know, how I should deal with return statements of the functions of my DAO. Example 1 I have function to getCustomer which should return String. In case query doesn't return any result should I return null, empty string or throw some kind of Exception? Example 2 I have function getCutomerList which return ArrayList. In case query doesn't return any result should I return null, empty ArrayList or throw some Exception? Example 3 Some sql exception was detected, what should I do: throw exception or do try..catch of the block where it can occur? What is the "good" practice or "best" practice to apply in my case? Thanks on advance, Serhiy.

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  • Most efficient way for a lookup/search in a huge list (python)

    - by user229269
    Hey guys, -- I just parsed a big file and I created a list containing 42.000 strings/words. I want to query [against this list] to check if a given word/string belongs to it. So my question is: What is the most efficient way for such a lookup? A first approach is to sort the list [list.sort()] and then just use the if word in list: print 'word' -- which is really trivial and I am sure there is a better way to do it. My goal is to apply a fast lookup that finds whether a given string is in this list or not. If you have any ideas of another data structure, they are welcome. Yet, I want to avoid for now more sophisticated data-structures like Tries etc. I am interested in hearing ideas (or tricks) about fast lookups or any other python library methods that might do the search faster than the simple 'in'. Thanks in advance!

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  • C++0x, How do I expand a tuple into variadic template function arguments?

    - by Gustaf
    Consider the case of a templated function with variadic template arguments: template<typename Tret, typename... T> Tret func(const T&... t); Now, I have a tuple t of values. How do I call func() using the tuple values as arguments? I've read about the bind() function object, with call() function, and also the apply() function in different some now-obsolete documents. The GNU GCC 4.4 implementation seems to have a call() function in the bind() class, but there is very little documentation on the subject. Some people suggest hand-written recursive hacks, but the true value of variadic template arguments is to be able to use them in cases like above. Does anyone have a solution to is, or hint on where to read about it?

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  • Windows authetication with Silverlight custom binding.

    - by sfx
    Hello, I am trying to set up security within a web.config file for a WCF service hosted in IIS but keep getting the error message: Security settings for this service require 'Anonymous' Authentication but it is not enabled for the IIS application that hosts this service. I have read Nicholas Allen’s blog (link text) and it appears that this is the route that I need to take. However, I am using “binaryMessageEncoding” in a customBinding for my Silverlight service, and as such, I’m not sure how to apply this type of security to such an element. This is how my custom binding looks in config at present: <customBinding> <binding name="silverlightBinaryBinding"> <binaryMessageEncoding /> <httpTransport /> </binding> </customBinding> Has anyone had any experience getting Windows authentication to work with a custom binding using binaryMessageEncoding? Cheers, sfx

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  • Trying to figure out how to check a checksum

    - by rross
    I'm trying to figure out how to check a checksum. My message looks like this: 38 0A 01 12 78 96 FE 00 F0 FB D0 FE F6 F6 being the checksum. I convert the preceding 12 sets in to binary and then add them together. Then attempt a bitwise operation to apply the 2s complement. I get a value of -1562, but I can't convert it back to hex to check if the value is correct. Can someone point me in the right direction? my code: string[] hexValue = {"38", "0A", "01", "12", "78", "96", "FE", "00", "F0", "FB", "D0", "FE"}; int totalValue = 0; foreach(string item in hexValue) { totalValue += Int32.Parse(item, NumberStyles.HexNumber); } int bAfter2sC = ~totalValue + 1; Console.Write("answer :" + bAfter2sC + "\n");

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  • Browser Compatablitiy, Support, Modern Browsers and older Versions.

    - by smoop
    This is a question to all web-developers working in the industry more than a few years. Today the server guy at my work told me that his browser didnt render a google font I used on a site properly, so I checked his browser - it was firefox 3.5. (google font Raleway).. This made me think.. I know for some of our sites its a requirement to support IE6 (larger corperate sites) but for the rest (personal sites) should I be looking at developing for all incrments of firefox, chrome, IE and safari???? Does your company still support IE6? Does your company support previous versions of modern browsers or just the latest ones? and finally, has anyone else had this problem with FF 3.5 and Google Hosted font Raleway..(the font displays extra extra thing so the font is almost unreadable) If anyones interested I found a working solution to my font problem here: http://www.jshsolutions.net/google-webfonts-cross-browser-fix-howto/ Sam

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  • JSF skips phases - How to debug that?

    - by Pentius
    Hey fellows, I have to debug a foreign jsf application thanks god. The problem is, that I submit a form, but the values aren't carried over. With a phase listener I can see, that the life cycle doesn't run completely through, so to say it skips phase 2 -5: After the restore view phase, the render response phase is directly called. I miss the apply values, validation, update model actions and so on. So, this could be a chicken-and-egg problem: 1. The responsible phases aren't called, so the new form input can't be carried over. 2. The system doesn't recognize any new input and therefore directly renders after restoring the view. I checked that there is no call of responseComplete() oder renderResponse(). I'm stuck somehow. Any idea to validate one of the two hypothesis? Or how to debug that in general? Did anybody have a similar problem?

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