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  • Question about array subscripting in C#

    - by Michael J
    Back in the old days of C, one could use array subscripting to address storage in very useful ways. For example, one could declare an array as such. This array represents an EEPROM image with 8 bit words. BYTE eepromImage[1024] = { ... }; And later refer to that array as if it were really multi-dimensional storage BYTE mpuImage[2][512] = eepromImage; I'm sure I have the syntax wrong, but I hope you get the idea. Anyway, this projected a two dimension image of what is really single dimensional storage. The two dimensional projection represents the EEPROM image when loaded into the memory of an MPU with 16 bit words. In C one could reference the storage multi-dimensionaly and change values and the changed values would show up in the real (single dimension) storage almost as if by magic. Is it possible to do this same thing using C#? Our current solution uses multiple arrays and event handlers to keep things synchronized. This kind of works but it is additional complexity that we would like to avoid if there is a better way.

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  • Somewhat newb question about assy and the heap.

    - by Eric M
    Ultimately I am just trying to figure out how to dynamically allocate heap memory from within assembly. If I call Linux sbrk() from assembly code, can I use the address returned as I would use an address of a statically (ie in the .data section of my program listing) declared chunk of memory? I know Linux uses the hardware MMU if present, so I am not sure if what sbrk returns is a 'raw' pointer to real RAM, or is it a cooked pointer to RAM that may be modified by Linux's VM system? I read this: How are sbrk/brk implemented in Linux?. I suspect I can not use the return value from sbrk() without worry: the MMU fault on access-non-allocated-address must cause the VM to alter the real location in RAM being addressed. Thus assy, not linked against libc or what-have-you, would not know the address has changed. Does this make sense, or am I out to lunch?

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  • PHP XMLREADER - QUESTION

    - by Matias
    Hi Guys, I am pretty new to xml parsing and I am using XMLREADER to parse a huge file. Given the following XML (sample): <hotels> <hotel> <name>Bla1</name> </hotel> <hotel> <name>Bla2</name> </hotel> </hotels> And then the XMLREADER in PHP which pulls up the values to my Database: $reader = new XMLReader(); $reader->open('hotels.xml'); while ($reader->read()) { if ($reader->name == "name") { $reader->read(); mysql_query("INSERT INTO MyHotels (hotelName) VALUES (\"$reader->value\")"); } } $reader->close(); The problem is that I've got a single empty row between each of the parsed nodes!! Not sure why this happens! | ID | hotelName | | 1 | Bla1 | | 2 | | | 3 | Bla2 | | 4 | | Help is greatly appreciated.

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  • Regex Question..

    - by Josh
    Hello everyone- In my C# Console App I'm trying to use Regex to search a string to determine if there is a match or not. Below is my code but it is not quite working right so I will explain further. sSearchString is set to "_One-Call_Pipeline_Locations" and pDS.Name is a filename it is searching against. Using the code below it is set to true for Nevada_One-Call_Pipeline_Locations and Nevada_One-Call_Pipeline_LocationsMAXIMUM. There should be a match for Nevada_One-Call_Pipeline_Locations But Not for Nevada_One-Call_Pipeline_LocationsMAXIMUM. How can I change my code to do this properly? Thanks in advance if (Regex.IsMatch(pDS.Name, sSearchString))

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  • Twitter Search API Question

    - by supermogx
    I'm using the twitter search API to get twitter posts based on some keywords, using AND and OR keyword. It works OK, but I seem to get problems using hashtags... For example : Not returning any results : http://search.twitter.com/search.json?q="%23ipad+AND+%23ipod"+OR+"%23joke+AND+%23funny"&rpp=100&callback=? Returning results : http://search.twitter.com/search.json?q="ipad+AND+ipod"+OR+"joke+AND+funny"&rpp=100&callback=? But there's results with #ipod AND #ipad because when I search only for #ipod, I can see a lot of posts with both hashtags. Example : http://search.twitter.com/search.json?q=%23ipad&rpp=100&callback=? P.S. %23 = # Any idea?

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  • vba: what does ReDim Preserve do and simple array question

    - by every_answer_gets_a_point
    i am looking at someone else's vba excel code. they are doing ReDim Preserve dataMatrix(7, i) in both loops. what does this do? also, it seems like the second loop just overwrites the data in the first, loop, is that correct? Dim dataMatrix() As String Worksheets.Item("ETS").Select Do While Trim(Cells(r, 1)) <> "" Debug.Print "The line: ", Trim(Cells(r, 1)), r r = r + 1 dataMatrix(1, i) = Trim(Cells(r, 1)) ''file name dataMatrix(2, i) = Trim(Cells(r, 2)) ''sample type dataMatrix(3, i) = Trim(Cells(r, 3)) ''sample name dataMatrix(4, i) = "ETS" '' dataMatrix(5, i) = Trim(Cells(r, 5)) ''Response dataMatrix(6, i) = Trim(Cells(r, 6)) ''ISTD Response dataMatrix(7, i) = Trim(Cells(r, 10)) ''Calculated Conc i = i + 1 ReDim Preserve dataMatrix(7, i) Loop r = 5 Worksheets.Item("ETG").Select Do While Trim(Cells(r, 1)) <> "" Debug.Print "The line: ", Trim(Cells(r, 1)), r r = r + 1 dataMatrix(1, i) = Trim(Cells(r, 1)) ''file name dataMatrix(2, i) = Trim(Cells(r, 2)) ''sample type dataMatrix(3, i) = Trim(Cells(r, 3)) ''sample name dataMatrix(4, i) = "ETG" dataMatrix(5, i) = Trim(Cells(r, 5)) ''Response dataMatrix(6, i) = Trim(Cells(r, 6)) ''ISTD Response dataMatrix(7, i) = Trim(Cells(r, 10)) ''Calculated Conc i = i + 1 ReDim Preserve dataMatrix(7, i) Loop

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  • Question regarding parent/child relationships with dynamically generated checkboxes using jquery

    - by Jeff
    I have a form of checkboxes, that is dynamically generated based on the users content. Sections of checkboxes are broken up by categories, and each category has projects within. For database purposes, the category values have checkboxes, that are hidden. IF a category has sub items that have checkboxes that are checked, THEN the category checkbox is checked as well. I have gotten this working ok using the JQuery .click(), but I can't figure out how to do it when the page loads. Here is my code for when a checkbox is actually clicked: $(".project").click(function() { if($(this).is(":checked") && $(this).hasClass("project")) { $(this).parent().parent().children(':first').attr('checked', true); }else if(!$(this).parent().children('.project').is(":checked")){ $(this).parent().parent().children(':first').attr('checked', false); } }); Now when I am editing the status of these boxes (meaning after they have been saved to the db) the category boxes are not showing up as checked even though their children projects are checked. What can I do to make it so that my category box will be checked at load time if that category's child is checked? Part of the problem I think is with the dynamically changing parent child setup, how can I find the parent box in order to have it checked? Thanks!

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  • Question on preprocessor directives

    - by dotnetdev
    If I use proprocessor directives to define which code an OS will run, like so: #if winXP // Compiling for Windows XP platformName = "Microsoft Windows XP"; #elif win2000 // Compiling for Windows 2000 platformName = "Microsoft Windows 2000"; #elif win7 // Compiling for Windows 7 platformName = "Microsoft Windows 7"; #else // Unknown platform specified platformName = "Unknown"; How does the system pick up which OS is being used? This is an example from the book Visual C# 2010 Recipes, where the author says that the platformName variable (declaration ommitted), wil equal the OS above. Thanks

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  • Quick question about jQuery selector content efficiency

    - by serg
    I am loading HTML page through ajax and then doing a bunch of searches using selectors: $.ajax({ ... dataType: "html", success: function(html) { $("#id1", html); $(".class", html); //... } } Should I extract $(html) into a variable and use it as a content, or it doesn't matter (from performance point)? success: function(html) { $html = $(html); $("#id1", $html); $(".class", $html); //... }

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  • Question on how to remove a Visual Studio Breakpoint

    - by Velika
    Let's say I have 10 breakpoints and I want to clear one but not the other 9. If I toggle the breakpoint on the one that I want to remove, it is resurrected the next time I restart the app. The only way that I know to permanently get rid of it is to clear ALL the breakpoints, which I would rather not do since I would have to reset the other 9. Is there a better way in ANY VS version?

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  • SVN Merge Question

    - by SVN
    Suppose that I have two massive folders in SVN: test and prod. I'm trying to use the following svn command to merge the content from test into prod: svn merge ./prod@HEAD ./test@HEAD ./prod However, my SVN repository is huge and this process takes an enormous amount of time. Is there any way that I can make a simpler merge statement which will be more processor friendly? Perhaps a server-URL based merge? Any insight is appreciated....

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  • PHP Regex Question

    - by oyerli
    Hi, I am developing an application using PHP but I am new to regular expressions, I could not find a solution to my problem. I want to replace all occurences of #word with a link, i have written a preg_match for this: $text=preg_replace('~#([\p{L}|\p{N}]+)~u', '<a href="/?aranan=$1">#$1</a>', $text); The problem is, this regular expression also matches the html character codes like &#039; and gives corrupt output. I need to exclude the words starting with &# but i do not know how to do that using regular expressions. Thanks for your help.

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  • PLEASE HELP JAVA/SQL question

    - by fred-ghosn
    Hello everyone, well I'm new here and I really need some help.. I want to create a table and this table's name will be inserted from a textfield. However when I run the query it's giving me an error, any help on this one? Ill paste the code here: public boolean CreateTable() { TableNumber=jTextField4.getText(); try { String password = null; String s = "CREATE TABLE '"+TableNumber+'" (Item char(50),Price char(50))"; ConnectionForOrders(); stmt = conn.createStatement(); stmt.executeUpdate(s); boolean f=false; ConnectionForOrdersclose();

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  • actionscript 3 array question

    - by Naro
    var arr1:Array = new Array(); arr1.push(item1); arr1.push(item2); arr1.push(item3); then arr1 and its elements get passed to other functions is there a way to know the index of an item in the array? GetParentArrayIndex(item2) would give me 1;

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  • MySQL: Question about SELECT WHERE AND/OR

    - by Andrew
    I'm trying to write a query that returns the same result from three different events, but I think I am doing it wrong. I can run my query against one event ID and it works. How can I select all three? Here's what I have so far: SELECT * FROM `Registrations` WHERE `Role` = "Attendee" AND `RegistrationStatus_ID` = "1" AND `DigSignature` IS NULL AND `Event_ID` = "147" OR `Event_ID` = "155" OR `Event_ID` = "160"

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  • Django and a referrer system question

    - by Hellnar
    Hello, I am trying develop a basic referrer system to my Django website, system will be generating a unique url for each users to share with their friends. Once these friends enter this website, system somehow keep the data that "this user is browsing by the reference of X user" and once this invited person decided to register for an account, system will save this information (maybe as an extra Foreign Key of the inviting user in the UserProfile model) Now how can I keep track of the inviting user from the moment entering using the referred link to the point where he/she registers to the site. Would session framework work on this? If not how could this be done ?

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  • MySQL table data question?

    - by mySQL
    How should my Mysql table data look like for a single checkbox that checks and see if the user has said yes if its clicked or no if its not? Here is the checkbox. <input type="checkbox" name="yes" id="yes" value="yes" /> I was wondering how would I add it to the following table. CREATE TABLE IF NOT EXISTS `vote` ( `counter` int(8) NOT NULL default '0', `value` int(8) NOT NULL default '0' ) ENGINE=MyISAM DEFAULT CHARSET=latin1;

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  • grails question (sample 1 of Grails To Action book) problem with Controller and Service

    - by fegloff
    Hi, I'm doing Grails To Action sample for chapter one. Every was just fine until I started to work with Services. When I run the app I have the following error: groovy.lang.MissingPropertyException: No such property: quoteService for class: qotd.QuoteController at qotd.QuoteController$_closure3.doCall(QuoteController.groovy:14) at qotd.QuoteController$_closure3.doCall(QuoteController.groovy) at java.lang.Thread.run(Thread.java:619) Here is my groovie QuoteService class, which has an error within the definition of GetStaticQuote (ERROR: Groovy:unable to resolve class Quote) package qotd class QuoteService { boolean transactional = false def getRandomQuote() { def allQuotes = Quote.list() def randomQuote = null if (allQuotes.size() > 0) { def randomIdx = new Random().nextInt(allQuotes.size()) randomQuote = allQuotes[randomIdx] } else { randomQuote = getStaticQuote() } return randomQuote } def getStaticQuote() { return new Quote(author: "Anonymous",content: "Real Programmers Don't eat quiche") } } Controller groovie class package qotd class QuoteController { def index = { redirect(action: random) } def home = { render "<h1>Real Programmers do not each quiche!</h1>" } def random = { def randomQuote = quoteService.getRandomQuote() [ quote : randomQuote ] } def ajaxRandom = { def randomQuote = quoteService.getRandomQuote() render "<q>${randomQuote.content}</q>" + "<p>${randomQuote.author}</p>" } } Quote Class: package qotd class Quote { String content String author Date created = new Date() static constraints = { author(blank:false) content(maxSize:1000, blank:false) } } I'm doing the samples using Eclipse with grails addin. Any advice? Regards, Francisco

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  • C++ - Basic WinAPI question

    - by HardCoder1986
    Hello! I am now working on a some sort of a game engine and I had an idea to put everything engine-related into a static library and then link it to my actual problem. Right now I achieved it and actually link that library and every functions seem to work fine, except those, which are windows-related. I have a chunk of code in my library that looks like this: hWnd = CreateWindow(className, "Name", WS_OVERLAPPED | WS_CAPTION | WS_EX_TOPMOST, 0, 0, 800, 600, NULL, NULL, GetModuleHandle(NULL), this); if (hWnd) { ShowWindow(hWnd, SW_NORMAL); UpdateWindow(hWnd); } else { MessageBox(NULL, "Internal program error", "Error", MB_OK | MB_ICONERROR); return; } When this code was not in the library, but in the actual project, it worked fine, created the window and everything was ok. Right now (when I'm linking to my library that contains this code) CreateWindow(...) call returns NULL and GetLastError() returns "Operation succesfully completed" (wtf?). Could anybody help me with this? Is it possible to create a window and display it using a static library call and why could my code fail? Thank you.

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  • CodeIgniter Question: How to delete records using ActiveRecord with mySQL function as WHERE conditio

    - by Jhourlad Estrella
    I have a table named ChatSessions where I keep track of active users in the chatroom. I need to prune expired user sessions from the table every 10 minutes. Using pure php-mysql is plain simple but I'm totally clueless how to convert this into ActiveRecord in CodeIgniter. The plain SQL query is below: SELECT * FROM `ChatSessions` WHERE `SessionExpires` < DATE_SUB( NOW( ) , INTERVAL 10 MINUTE ) Can anybody tell me what is the equivalent code in CodeIgniter using ActiveRecord? Thanks in advanced.

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  • HTML5 Canvas compositing question (source-in)

    - by Alex Ciarlillo
    I am trying to recreate a page flipping type animation in HTML5 using canvas. The animation is based on ideas from here: hxxp://oreilly.com/javascript/archive/flashhacks.html but thats not really important. The problem I am having is that using the 'source-in' composite operation is not giving me the results I expect and would like clarification as to why. Here is the example: (i think it can only be viewed in chrome, not working in FF 3.6) http://acpound.fylez.com/test/example.html The black rectangle is supposed to act as a 'mask' for the page being turned over. All I want to see is the turning page in the areas where it overlaps the mask. The problem is the entire black rectangle is drawn, not just the area where they overlap. The source is all on the page. I know HTML5 isn't really being used yet, I'm just experimenting for my personal site and curiosity. Any ideas would be greatly appreciated.

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  • toString() Method question

    - by cdominguez13
    I've been working on this assignemnt here's code: public class Student { private String fname; private String lname; private String studentId; private double gpa; public Student(String studentFname,String studentLname,String stuId,double studentGpa) { fname = studentFname; lname = studentLname; studentId = stuId; gpa = studentGpa; } public double getGpa() { return gpa; } public String getStudentId() { return studentId; } public String getName() { return lname + ", " + fname; } public void setGpa(double gpaReplacement) { if (gpaReplacement >= 0.0 && gpaReplacement <= 4.0) gpa = gpaReplacement; else System.out.println("Invalid GPA! Please try again."); System.exit(0); } } Now I need to create a toString() method that returns a String formatted something like this: Name: Wilson, Mary Ann ID number: 12345 GPA: 3.5

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  • Question about multiple 'catch'

    - by chun
    Can anyone tell me why the output of this class is 'xa'? why the other exception won't be caught? public class Tree { public static void main(String... args){ try { throw new NullPointerException(new Exception().toString()); } catch (NullPointerException e) { System.out.print("x"); } catch (RuntimeException e) { System.out.print("y"); } catch (Exception e) { System.out.print("z"); } finally{System.out.println("a");} } }

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