digital input - Page 562

Hidden line removal in JavaScript or Python?

- by feklee

I have the following task: Input: A 3D scene comprised of a set of cuboids. Could be broken down to a set of triangles. A description of a camera: position, direction, focal length. Output: 2D wire frame projection of the scene as a set of lines. Important: Hidden lines removal should have been applied. Platform: Web app running on Google App Engine for Python. Any idea if there is a JavaScript or Python library that does this?

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HTML tag for identifying text

- by ravi

I am not very much familiar with HTML programming. If we look at the source code of a page, then we can see what are the HTML tags for which texts and so. It is the case that there is group or class of HTML tags which is used for purpose such that it can be used for main text or so. I mean like '<\input type="radio" name="option"' this tag says that there will a radio button, similar can be make a group of HTML tags such that it consist of text part, which means we look at the tag and not at the content and can say that in between startTag and endTag we have text.

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how to hide the image? how can i do ?

- by user309381

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VS 2010 Debugger: Any way to search an object for a particular value?

- by Dr. Zim

I am trying to search the "this" object in an ASP.NET MVC 2 for a string value. In a view, I set the partial view input tag prefix and am trying to figure out how to reference it in the partial view itself. For example: Html.EditorFor(m => m, "templateName", "fieldPrefix"); In the partial view, I would like to search the "this" object for my fieldPrefix string to see where the MVC folks decided to store it. Any ideas?

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How not to lose focus on a login page

- by Misha Moroshko

I have a simple login form with 2 input fields: "username" and "password". "username" field is focused by default. The problem is that when user clicks outside "username" or "password" fields, the focus is gone (it is neither on "username" nor on "password" fields"). How can I force the focus to be on these 2 fields only ? In my case, this is a really annoying behavior, so I really want to do this :) Can I do something like: $("*").focus(function() { if (!$(this).hasClass("my_inputs_class")) { // How to stop the focusing process here ? } }); ?

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SQL Server 2008 + expensive union all

- by Tim Mahy

Hi al, we have 5 tables over which we should query with user search input throughout a stored procedure. We do a union all of the similar data inside a view. Because of this the view can not be materialized. We are not able to change these 5 tables drastically (like creating a 6th table that contains the similar data of the 5 tables and reference that new one from the 5 tables). The query is rather expensive / slow what are our other options? It's allowed to think outside the box. Unfortunately I cannot give more information like the table/view/SP definition because of customer confidentiality... greetings, Tim

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Mutually exclusive regular expressions

- by CaptnCraig

If I have a list of regular expressions, is there an easy way to determine that no two of them will both return a match for the same string? That is, the list is valid if and only if for all strings a maximum of one item in the list will match the entire string. It seems like this will be very hard (maybe impossible?) to prove definitively, but I can't seem to find any work on the subject. The reason I ask is that I am working on a tokenizer that accepts regexes, and I would like to ensure only one token at a time can match the head of the input.

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Jquery counting elements by class what is the best way to implement this?

- by 133794m3r

Ok what i'm trying to do is to count all of the elements in the current page with the same class and then i'm going to use it to be added onto a name for a input form. Basically i'm allowing users to click on an and then by doing so add another one for more of the same type of items. But i can't think of a way to count all of these simply with jquery/javascript. I was going to then name the item as something like name="whatever(total+1)", if anyone has a simple way to do this i'd be extremely grateful as javascript isn't exactly my native tongue and stack overflow usually has a ton of great answers and a great community so i'm hoping my query will not go unheard.

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update value of a variable outside a class in VB.NET

- by dpp

I have a class derived from a Form, it has textbox for username and password and an OK button. I want it to behave like an InputBox so I can use it like this: Dim Username As String = "" Dim Password As String = "" Dim authorization As New Authorization(Username, Password) authorization.ShowDialog() 'The user will click OK and I will expect the Username and Password to change based on the user input MsgBox(Username & " " & Password) The Authorization class: Public Class Authorization Dim RefUsername As String Dim RefPassword As String Public Sub New(ByRef Username As String, ByRef Password As String) InitializeComponent() RefUsername = Username 'I'm trying to pass reference instead of value RefPassword = Password 'I'm trying to pass reference instead of value End Sub Private Sub OKButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AuthorizeButton.Click RefUsername = Username.Text 'I'm trying to change value of variable outside the class RefPassword = Password.Text 'I'm trying to change value of variable outside the class Me.Close() End Sub End Class In short, I want to change the value of variables outside the class when the user clicks the OK, how am I going to accomplish that?

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dependencies linking isnt enough?

- by Russel

In Visual Studio (C++) the other day, I was trying to build some example code and it would not work, even though I was pointing at the right include and lib directories. (I got linker errors) I asked a friend who fixed the problem by specifying the necessary .lib files in the General Properties-Linker-Input field of the project settings. My questions: Simply pointing to the directory with the .lib files is not enough? You need to specifically tell the linker which lib files to link? By listing the .lib files in the "additional dependencies" field, am I specifying exactly which static libs get built into the exe? If the answer to this is yes, then will these be the ONLY lib files that get built into the exe? Why is it called "additional" dependencies? Is there another place to specify lib files to include? Before I thought this was done by including the necessary header file? Thanks everyone! Russel

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nUnit Assert.That(method,Throws.Exception) not catching exceptions

- by JasonM

Hi Everyone, Can someone tell me why this unit test that checks for exceptions fails? Obviously my real test is checking other code but I'm using Int32.Parse to show the issue. [Test] public void MyTest() { Assert.That(Int32.Parse("abc"), Throws.Exception.TypeOf<FormatException>()); } The test fails, giving this error. Obviously I'm trying to test for this exception and I think I'm missing something in my syntax. Error 1 TestCase '.MyTest' failed: System.FormatException : Input string was not in a correct format. at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) at System.Int32.Parse(String s) based on the documentation at Throws Constraint (NUnit 2.5)

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Return rows from stored procedure

- by molgan

Hello I have this code: public IEnumerable<SomeClass> GetAvalibleThingies(DateTime startDate, DateTime endDate, int categoryID) { if (_entities.Connection.State == System.Data.ConnectionState.Closed) _entities.Connection.Open(); using (EntityCommand c = new EntityCommand("SomeEntities.GetAvalibleThingies", (EntityConnection)this._entities.Connection)) { c.CommandType = System.Data.CommandType.StoredProcedure; EntityParameter paramstartDate = new EntityParameter("startDate", System.Data.DbType.DateTime); paramstartDate.Direction = System.Data.ParameterDirection.Input; paramstartDate.Value = startDate; c.Parameters.Add(paramstartDate); ........ var x = c.ExecuteReader(); return x as IEnumerable<SomeClass>; }; But I can't get it to return a list of SomeClass. What's needed to do here? I use the entity framework 3.5sp1 one /M

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Fork to shell script and terminate original process with Haskell

- by Neth

I am currently writing a Haskell program that does some initialization work and then calls ncmpcpp. What I am trying to do is start ncmpcpp and terminate the Haskell program, so that only ncmpcpp is left (optionally, the program can keep running in the background, as long as it's unintrusive) However, even though I am able to start ncmpcpp, I cannot interact with it. I see its output, but input appears to be impossible. What I am currently doing is: import System.Process (createProcess, proc) ... spawnCurses :: [String] -> IO () spawnCurses params = do _ <- createProcess (proc "ncmpcpp" params) return () What am I doing wrong/What should I do differently?

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Translating this query in LINQ ? (list of like)

- by Erick

I would like to translate this query in LINQ ... it is very easy to construct if we do it in pure SQL but in dynamically created LINQ query (building a search query based on user input) it's a whole new story. SELECT * FROM MyTable WHERE 1=1 AND Column2 IN (1,2,3) AND ( Column1 LIKE '%a%' OR Column1 LIKE '%b%' ) Now to try to construct this we tried it this way : if(myOjb.Column2Collection != null) query = query.where(f => f.Column2.Contains(myOjb.Column2Collection)); if(myObj.Column1Collection != null) { // tough part here ? //query = query.Where(); ... } So what would be the best aproach to this normally ? Note that I am aware of the SqlMethod.Like, tho I can't figure a way to implement it here ...

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How to prepare an interview for Ruby on Rails developer position?

- by Snehal

Background about myself: I have about 3 years experience working in Java/J2EE. I am currently pursuing MS in Software Engineering at a reputed university. I have done several classwork projects on Ruby on Rails and can be considered at Intermediate level expertise with ROR. I have an interview coming up next week for a Ruby on Rails developer position at a startup. I have already prepared all the basics of Ruby on Rails but didn't get a lot input on the questions asked for ROR developers. Can you guys help me with the preparation? Any materials, suggestions would be welcome.

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Javascript & jquery : Unable to increment within a form

- by Daniyal

I got a simple increment function like this: $(function(){ $("#inc").click(function(){ var value = parseInt($(":text[name='ice_id']").val()) + 1; $(":text[name='ice_id']").val(value); }); $("#dec").click(function(){ var value = parseInt($(":text[name='ice_id']").val()) - 1; $(":text[name='ice_id']").val(value); }); }); the ice_id text field is embedded within a form <form id="masterSubmit" name="masterSubmit" action="" method="post"> <td><input id="ice_id" type="text" name="ice_id" size="16" maxlength="15"></td> </form> When I try now to increment , it successfully increments a number, but shows the following weird behavior: It 'refreshes' the site, so that the content of the text field is gone. This behavior disappears, if I comment out the form tags ...unfortunately the form tags are required for an AJAX-submit. Are there any ways to avoid this problem? Thanks in advance for any hints and best regards Daniyal

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how to write regular expression to validate a string using regex in C#

- by Charu

I need to validate a user input based on condition. i wrote a regular expression to do so, but it's failing not sure why. Can somebody point where i am making mistake? Regex AccuracyCodeHexRegex = new Regex(@"^[PTQA]((0|8)[01234567]){2}$"); This is what i am trying to validate(If the string is a subset of these strings then it is valid): Phh, Thh, Qhh, Ahh where 'h' is a hex digit in the set {00, 80, 01, 81, 02, 82, 03, 83, 04, 84, 05, 85, 06, 86, 07, 87} Ex: P00 is valid P20 is not valid

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Extract files from zip folder and store these files in blobstore

- by Eng_Engineer

i want to upload zip folder from file input in form the i want to extract the contents of this uploaded zip folder,and store the contents (files)of this zip in the blobstore in order to download them after putting these files in one folder,but the problem is that i can't deal with the zip folder directly(to read it), i tried as this: form = cgi.FieldStorage() file_upload = form['file'] zip1=file_upload.filename zipstream=StringIO.StringIO(zip1.read()) But the problem still that i can't read the zip as previous,also i tried to read zip folder directly like this: z1=zipfile.ZipFile(zip1,"r") But there was an error in this way.Please can any one help me.Thanks in advance.

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checking & unchecking a HTML checkbox inside repeater based on database value

- by subash

i have a repeater control with item templates having check boxes,and i need the check boxes inside the repeatercontrol to be checked based on the database value of a column field "enabled" of bool type of either true or false. the code is as below what modification should i make to check and uncheck the check box? <asp:Repeater ID="rptrDashboardIssue" runat="server"> <ItemTemplate> <%issueEnum += 1;%> <div style="margin-left: -20px; position: absolute;" id="divModificationCaseflow"> <input type="checkbox" name="chkModificationCaseflow" id="chkModificationCaseflowIssue<%=issueEnum%>" checked="<%# DataBinder.Eval(Container.DataItem, "enabled")%>" /> </div> </ItemTemplate> </asp:Repeater>

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how to combine changes tracked from several documents

- by Jessica

I tried to search the solution in internet, but found nothing, is there anyone who can help me? For my application, there is one document (Microsoft word), and this document is reviewed by several people in the "Track changes" mode, so the input to my application is the original document and the reviewed documents with changes (like insert/delete/comments). By this link , I know how to extract all the changes from the reviewed documents. what i want is to combine all the changes from all the reviewed documents into ONE document, and make all the changes "accepted", so the output of my application is one modified Microsoft document with all the changes (delete/insert/comment) accepted. My problem is that I don't know how to combine the changes from several documents into one single document. Anyone has an idea how to do this? Thank you very much in advance.

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tool to generate C++ wrapper over java class

- by Vardhan Varma

From what I understand, SWIG is to wrap C++/C to make it appear in Java, and javah is to implement certain java functions in C++ ( aka native functions ). Is there a tool which can create a C++ wrapper over a java class, so that the caller. of this c++ wrapper doesn't have to worry about java, for example Input Java is class hw { public void hi() { System.out.println("Hello World"); } } Tools outputs hw.hh ( and some. c++ files ), which can be used as: hw *h = new hw(/*JEnv */ env); h-hi(); Is there a tool available which can do this ?

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Which would be better? Storing/access data in a local text file, or in a database?

- by TerranRich

Basically, I'm still working on a puzzle-related website (micro-site really), and I'm making a tool that lets you input a word pattern (e.g. "r??n") and get all the matching words (in this case: rain, rein, ruin, etc.). Should I store the words in local text files (such as words5.txt, which would have a return-delimited list of 5-letter words), or in a database (such as the table Words5, which would again store 5-letter words)? I'm looking at the problem in terms of data retrieval speeds and CPU server load. I could definitely try it both ways and record the times taken for several runs with both methods, but I'd rather hear it from people who might have had experience with this. Which method is generally better overall?

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Regular Expression for accurate word-count using JavaScript

- by Haidon

I'm trying to put together a regular expression for a JavaScript command that accurately counts the number of words in a textarea. One solution I had found is as follows: document.querySelector("#wordcount").innerHTML = document.querySelector("#editor").value.split(/\b\w+\b/).length -1; But this doesn't count any non-Latin characters (eg: Cyrillic, Hangul, etc); it skips over them completely. Another one I put together: document.querySelector("#wordcount").innerHTML = document.querySelector("#editor").value.split(/\s+/g).length -1; But this doesn't count accurately unless the document ends in a space character. If a space character is appended to the value being counted it counts 1 word even with an empty document. Furthermore, if the document begins with a space character an extraneous word is counted. Is there a regular expression I can put into this command that counts the words accurately, regardless of input method?

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How can I catch a change event from an HTML text field when a user clicks on a link after editing?

- by Eric the Red

Our webapp has a form with fields and values that change depending on values entered. Each time there is a change event on one of the form elements, we use an expensive AJAX call to update other elements on the page. This works great for selects, radio buttons and checkboxes. The issue comes in when a user adds content to a text field, and then clicks a link without taking the focus from the text field. The browser moves to a new page, and the contents of the text field are never saved. Is there an easy way to code around this? The AJAX call is too expensive to call with each key press. Here's an example of my Prototype code at the moment: $$('.productOption input.text').invoke('observe', 'change', saveChangeEvent);

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Using xsl param (if exists) to replcae attribute value

- by Assaf

I would like an xsl that replaces the value attribute of the data elements only if the relevant param names are passed. Input <applicationVariables applicationServer="tomcat"> <data name="HOST" value="localhost"/> <data name="PORT" value="8080"/> <data name="SIZE" value="1000"/> </applicationVariables> So for example if passing in a param HOST1=myHost and PORT=9080 the output should be: <applicationVariables applicationServer="tomcat"> <data name="HOST" value="myHost"/> <data name="PORT" value="9080"/> <data name="SIZE" value="1000"/> </applicationVariables> Note that HOST and PORT where replaced but SIZE was not replaced because there was no parameter with name SIZE Since the list of data elements is long (and may change), i would like a generic way of doing this with xsl

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