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  • NSTableView not refreshing when calling method from different class

    - by Matt S.
    I have a table view that gets refreshed two different ways. One is through a button and the other is when I call my refresh method, which is the same method that I use for the button, but for some reason, when I hit the button it works, but when I call it through a different class it doesn't. Here's the code that I use to refresh the tableview: Msqv *qv = [Msqv new]; [qv refresh:self]; //refresh is an IBAction that is used by the button

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  • Why does the compiler give an ambiguous invocation error when passing inherited types?

    - by Matt Mitchell
    What is happening in the C# compiler to cause the following ambiguous invocation compilation error? The same issue applies to extension methods, or when TestClass is generic and using instance rather than static methods. class Type1 { } class Type2 : Type1 {} class TestClass { public static void Do<T>(T something, object o) where T : Type1 {} public static void Do(Type1 something, string o) {} } void Main() { var firstInstance = new Type1(); TestClass.Do(firstInstance, new object()); // Calls Do(Type1, obj) TestClass.Do(firstInstance, "Test"); // Calls Do<T>(T, string) var secondInstance = new Type2(); TestClass.Do(secondInstance, new object()); // Calls Do(Type1, obj) TestClass.Do(secondInstance, "Test"); // "The call is ambiguous" compile error }

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  • Accessing preloaded images from parent script two use in child script. How?

    - by Matt
    I'm trying to update an image in a parent window with clickable links in a child window. I've preloaded the images in the parent window with one javascript file. "scriptss.js" My problem is I need to access the preloaded images of the parent window with the childscript "scriptremote.js" Thanks again for all the JS Help! The JS (scriptss.js) var newWindow = null; window.onload = init; var i = 0; image_object = new Image(); myImages = new Array(); // declare array myImages[0]="images/img1.jpg" // load array myImages[1]="images/img2.jpg" myImages[2]="images/img3.jpg" myImages[3]="images/img4.jpg" myImages[4]="images/img5.jpg" myImages[5]="images/img6.jpg" Here's the HTML for parent window: <img src="" width="200px" height="200px" id="myimage" name="myimage" /></img> Here's the JS for child window: window.onload = init; function init() { } function first_image() { window.parent.image_object.src = myImages[3]; //Problem happens here I think document.getElementById("myimage")window.parent.src = window.parent.image_object.src; } The HTML Child Window <h1>My Remote</h1> <a href="#" id="first" onclick="first_image()" >First Image</a> </br>

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  • Send data over telnet without pressing enter

    - by Matt
    I've recently started messing around with Java sockets and telnet... I want the user to be able to connect to the server, just type a letter and have it sent to the server, without pressing enter to send it. I'm sure there's no way for the server to set this up, but maybe telnet has a parameter or something which could allow this? Maybe if I got the user to type stty cbreak or stty raw before running telnet, this would work? (UNIX only, I know!) If I can get telnet to do this then it saves me having to write a special client just for this feature...

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  • RoR: Condition Always False - Why?

    - by Matt Hollingsworth
    Working in RoR 2.3.x. My quiz_results table has a row for user_id (3907) and result (0.1), and two users I'm looking at with no rows in the quiz_results table. This line keeps returining false: -if QuizResult.find_by_user_id(@user_id).present? But if I change it to anything that returns true, the next line reports an error on the * method: ="#{(QuizResult.average('score', :conditions => 'user_id = #{@user.id}') * 100).round}%" The beginning of the code is a loop: [email protected] do |user| Any ideas how to fix? Have tried unsuccessfully all day.

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  • Accessing preloaded images from parent script too use in child script. How?

    - by Matt
    I'm trying to update an image in a parent window with clickable links in a child window. I've preloaded the images in the parent window with one javascript file. "scriptss.js" My problem is I need to access the preloaded images of the parent window with the childscript "scriptremote.js" Thanks again for all the JS Help! The JS (scriptss.js) var newWindow = null; window.onload = init; var i = 0; image_object = new Image(); myImages = new Array(); // declare array myImages[0]="images/img1.jpg" // load array myImages[1]="images/img2.jpg" myImages[2]="images/img3.jpg" myImages[3]="images/img4.jpg" myImages[4]="images/img5.jpg" myImages[5]="images/img6.jpg" Here's the HTML for parent window: <img src="" width="200px" height="200px" id="myimage" name="myimage" /></img> Here's the JS for child window: window.onload = init; function init() { } function first_image() { window.parent.image_object.src = myImages[3]; //Problem happens here I think document.getElementById("myimage")window.parent.src = window.parent.image_object.src; } The HTML Child Window <h1>My Remote</h1> <a href="#" id="first" onclick="first_image()" >First Image</a> </br>

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  • how to get something to display only once in a while loop

    - by Matt Nathanson
    I've got a mysql query running and it checks to see if an iterator is equal to 1, then display this div title... if ($this->dliterator == 1) {echo "<div class='clientsection' id='downloads'>Downloads</div><br/>";}; The problem is, is that the dl iterator may not necessarily start at 1. (it is directly related to a downloadid from the database). How can I get this to display only for the first time through the loop ONLY? while ($row = mysql_fetch_assoc($result)) { if ($row['download'] != null){ if ($this->dliterator == 1) {echo "<div class='clientsection' id='downloads'>Downloads</div><br/>";}; if ($editDownload == 1) { echo "<div class='clientlink' style='margin-top: 15px;'>"; echo "<input name='downloads[$this->dliterator][name]' type='text' id='download$this->dliterator' value='" . $row['download'] . "'/>"; echo "<input name='downloads[$this->dliterator][title]' type='text' id='downloadtitle$this->dliterator' value='" . $row['downloadtitle'] . "'/>"; echo "<img class='removelink' src='/images/deletelink.png' width='15' />"; echo "<input id='downloadid' name='downloads[$this->dliterator][id]' type='hidden' value='".$row['downloadid']."' style='display: none'/>"; echo "<br/><img id='uploaddownload$uploaditerator' class='uploaddownload' src='../images/upload.png' width='80'/>"; echo "</div>"; }; }; $this->dliterator++; $uploaditerator++; };

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  • CSS 3 columns, why is the third column taking over the other 2?

    - by Matt Dawdy
    Here is the smallest amount of code that clearly illustrates my problem: <html> <body> <div style="float: left; width: 200px;">One</div> <div style="float: left; width: 200px;">Two</div> <div style="background-color: #f0f;">Three</div> </body> </html> The first 2 divs are supposed to be 2 left columns. The 3rd should take up the rest of the page. Eventually, I'm going to add options to hide and show the 2 columns on the left. But, why is the color purple extending all the way to the browser's left edge? I am trying to get it to start at the word "Three".

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  • Calling a constructor to reinitialize variables doesn't seem to work?

    - by Matt
    I wanted to run 1,000 iterations of a program, so set a counter for 1000 in main. I needed to reinitialize various variables after each iteration, and since the class constructor had all the initializations already written out - I decided to call that after each iteration, with the result of each iteration being stored in a variable in main. However, when I called the constructor, it had no effect...it took me a while to figure out - but it didn't reinitialize anything! I created a function exactly like the constructor - so the object would have its own version. When I called that, it reinitialized everything as I expected. int main() { Class MyClass() int counter = 0; while ( counter < 1000 ) { stuff happens } Class(); // This is how I tried to call the constructor initially. // After doing some reading here, I tried: // Class::Class(); // - but that didn't work either /* Later I used... MyClass.function_like_my_constructor; // this worked perfectly */ } ...Could someone try to explain why what I did was wrong, or didn't work, or was silly or what have you? I mean - mentally, I just figured - crap, I can call this constructor and have all this stuff reinitialized. Are constructors (ideally) ONLY called when an object is created?

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  • How can I handle validation of non-latin script input in PHP?

    - by Matt
    I am trying to adapt a php application to handle non-latin scripts (specifically: Japanese, simplified Chinese and Arabic). The app's data validation routines make frequent use of regular expressions to check input, but I am not sure how to adapt the \w character type to other languages without installing additional locales on the system (which I cannot rely on). Previous developers to have worked on the app have simply added needed characters to the regexes as the number of languages we supported grew (you frequently see "[\wÀÁÂÃÄÅÆÇÈÉ... etc" in the code), but I can't really do this for all the alphabets I need to support now. Does anybody out there have some advice on how to tackle this?

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  • Postion of & to denote reference type

    - by Matt H
    I was wondering whether to put the ampersand (&) after the variable type or before the variable name. To put it simply, I want to know which one is the conventional style or the standard, or if it is entirely down to preference. int &x; or int& x;

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  • Signs that a SQL statement is dangerous

    - by Matt
    Hi, I want to develop a function in PHP that checks how dangerous a SQL statement is. When i say dangerous i mean, certain symbols, characters or strings that are used to get data from a database that the user shouldnt see. For example: SELECT * FROM users WHERE userId = '1' can be injected in several ways. Although i clean the params, i also want to monitor how safe the query is to run. Thanks in advance

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  • Reading from CSVs in Python repeatedly?

    - by matt
    I'm trying to check the value of extracted data against a csv I already have. It will only loop through the rows of the CSV once, I can only check one value of feed.items(). Is there a value I need to reset somewhere? Is there a better/more efficient way to do this? Thanks. orig = csv.reader(open("googlel.csv", "rb"), delimiter = ';') goodrows = [] for feed in gotfeeds: for link,comments in feed.items(): for row in orig: print link if link in row[1]: row.append(comments) goodrows.append(row)

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  • iphone app working on most devices but not a few

    - by Matt Facer
    Hi there. I have recently been rewriting some of my iphone app because a couple of users have said it was crashing on certain events. The event in question is when I add a new XIB to the view using the following code AddItemViewController * add_item = [[AddItemViewController alloc] initWithNibName:@"AddItem" bundle:[NSBundle mainBundle]]; [self presentModalViewController:add_item animated:YES]; [add_item setViewFormat:2]; [add_item release]; it works perfectly on my iphone and a mate's ipod touch (both running 3.1.3) but another user on an ipod touch also with 3.1.3 says it crashes when the function above is called. Why could this be happening? Surely if it works on one device it should work on another?! Is there a better way to add a view which maybe doesnt crash? I have also disabled all the code on the loading xib - so it literally is loading a near blank page. It's SO annoying!! Thanks for any help.

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  • How to switch data pins on/off on parallel port?

    - by Matt
    I want to simply switch certain data pins on and off, so that they can control a set of relays. I'm not asking about the hardware bit (should be easy), but I don't know where to begin writing the software. I don't want a high level library that can send bytes to a device - I literally want to switch on/off certain pins. I'm running Linux and I want to do this in Java, so would I just need a library? It would be nice if the library has good documentation and is easy to use, but if not then a short example code will help me get started.

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  • style a navigation link when a particular div is shown

    - by Matt Meadows
    I have JQuery working to show a particular div when a certain link is clicked. I have managed to apply the effect I'm after with the main navigation bar through id'ing the body tag and using css to style when the id is found. However, i'd like to apply the same effect to the sub navigation when a certain div is present. How the main navigation is styled: HTML: <nav> <ul> <li id="nav-home"><a href="index.html">Home</a></li> <li id="nav-showreel"><a href="showreel.html">Showreel</a></li> <li id="nav-portfolio"><a href="portfolio.html">Portfolio</a></li> <li>Contact</li> </ul> </nav> CSS: body#home li#nav-home, body#portfolio li#nav-portfolio { background: url("Images/Nav_Underline.png") no-repeat; background-position: center bottom; color: white; } (Other links havent been added to styling as those pages are still in development) How the sub navigation is structured: <nav id="portfolioNav"> <ul> <li id="portfolio-compositing"><a id="compositingWork" href="#">Compositing</a></li> <li id="portfolio-animation"><a id="animationWork" href="#">Animation</a></li> <li id="portfolio-motionGfx"><a id="GFXWork" href="#">Motion Graphics</a></li> <li id="portfolio-3D"><a id="3DWork" href="#">3D</a></li> </ul> </nav> As you can see, its similar format to the main navigation, however i've tried the same approach and it doesn't work :( The Javascript that switches the divs on the navigation click: <script type="text/javascript"> $(document).ready(function() { $('#3DWork').click(function(){ $('#portfolioWork').load('portfolioContent.html #Portfolio3D'); }); $('#GFXWork').click(function(){ $('#portfolioWork').load('portfolioContent.html #motionGraphics'); }); $('#compositingWork').click(function(){ $('#portfolioWork').load('portfolioContent.html #PortfolioCompositing'); }); $('#animationWork').click(function(){ $('#portfolioWork').load('portfolioContent.html #PortfolioAnimation'); }); }); </script> JSFiddle for full HTML & CSS : JSFiddle File The effect I'm After:

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  • Credit card validation with regexp using test()

    - by Matt
    I'm trying to complete some homework and it appears the book might have gotten it wrong. I have a simple html page that allows user to pick a credit card in our case american express. The user then enters a number and evalutes that number based on a regular expression. My question ends up being when test() evaluates the number it returns a boolean or a string? I should then compare that string or boolean? True == true should fire off the code in a nested if statement. Heres what the book gives me as valid code: if(document.forms[0].cardName.value == "American Express") { var cardProtocol = new RegExp("^3[47][0-9]{13}$"); //REGEX ENTRY HERE if(cardProtocol.test(document.forms[0].cardNumber.value)) document.forms[0].ccResult.value = "Valid credit card number"; } The above code doesn't work in firefox. I've tried modifying it with 2 alerts to make sure the number is good and the boolean is good...and still no luck: if(document.forms[0].cardName.value == "American Express") { var cardProtocol = new RegExp("^3[47][0-9]{13}$"); //REGEX ENTRY HERE <------ alert(document.forms[0].cardNumber.value) alert(cardProtocol.test(document.forms[0].cardNumber.value)) if((cardProtocol.test(document.forms[0].cardNumber.value)) == true ) // <--Problem { document.forms[0].ccResult.value = "Valid credit card number"; } else { document.forms[0].ccResult.value = "Invalid credit card number"; } } Any ideas? the if loop is the culprit but I'm not figuring out why it is not working. Please throw up the code for the if loop! Thanks for the help!

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  • PHP - How do i display the first 20 li then have a link to display more (gallery)

    - by Matt Rogers
    I want to display about 20 li on a page with a link at the bottom that says something like 'display more'. This link will then clear the first 20 and display the next 20. How should i go about doing this. (I am creating a gallery) I was thinking about using PHP and MySQL. However for what I am doing I do not really need to store it in a database so is there an easier way of doing it only using html, php or javascript? thanks

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  • How to distinguish between new and returning anonymous Drupal users?

    - by Matt V.
    Is there an easy way (or a module) in Drupal to distinguish between anonymous users who have never created an account versus those who are returning but are not currently logged in? For non-returning (ie, completely new) users, I'd like to have a front page that is very streamlined and focused on registration as the call-to-action. However, if someone is a returning user but not currently logged in, I'd like to present a lot more information on the front page and have login as the main call-to-action. I realize both pages would still need to have both login and register options available, I just want to make the focus significantly different between the two.

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  • How to get the value of an attribute from XML file in PHP?

    - by Matt
    Hi, Sorry if this seems like an easy question, but I've started pulling hair out on this... I have a XML file which looks like this... <VAR VarNum="90"> <option>1</option> </VAR> I'm trying to get the VarNum. So far I've been successful using the follow code to get the other information: $xml=simplexml_load_file($file); $option=$xml->option; I just can't get VarNum (the attribute value I think?) Thanks!

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  • CSS: How to set remaining width as %, but having knowledge of only pixels

    - by Mega Matt
    Hi all, I've seen this question asked in a couple other contexts on SO, but I thought it would be worth asking again for my particular case. I'm trying to create some re-usable CSS classes for more consistency and less clutter on my site, and I'm stuck on trying to standardize one thing I use frequently. I have a container div that I don't want to set the height for (because it will vary depending on where on the site it is), and inside it is a header div, and then an unordered list of items, all with CSS applied to them. It looks a lot like this: I want the unordered list to take up the remaining room in the container div, knowing that the header div is 18px tall. I just don't know how to specify the list's height as "the result of 100% minus 18px". Does anyone have any advice in this situation? Thanks very much.

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  • Javascript Date: Ensure getMinutes(), getHours(), getSeconds() puts 0 in front if necessary

    - by Mega Matt
    Hi all, Looking for a creative way to be sure values that come from the getHours, getMinutes, and getSeconds() method for the javascript Date object return "06" instead of 6 (for example). Are there any parameters that I don't know about? Obviously I could write a function that does it by checking the length and prepending a "0" if need be, but I thought there might be something more streamlined than that. Thanks.

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