Search Results

Search found 42453 results on 1699 pages for 'my question'.

Page 79/1699 | < Previous Page | 75 76 77 78 79 80 81 82 83 84 85 86  | Next Page >

  • Beginner assembly programming memory usage question

    - by Daniel
    I've been getting into some assembly lately and its fun as it challenges everything i have learned. I was wondering if i could ask a few questions When running an executable, does the entire executable get loaded into memory? From a bit of fiddling i've found that constants aren't really constants? Is it just a compiler thing? const int i = 5; _asm { mov i, 0 } // i is now 0 and compiles fine So are all variables assigned with a constant value embedded into the file as well? Meaning: int a = 1; const int b = 2; void something() { const int c = 3; int d = 4; } Will i find all of these variables embedded in the file (in a hex editor or something)? If the executable is loaded into memory then "constants" are technically using memory? I've read around on the net people saying that constants don't use memory, is this true?

    Read the article

  • Question about factory classes

    - by devoured elysium
    Currently I have created a ABCFactory class that has a single method creating ABC objects. Now that I think of it, maybe instead of having a factory, I could just make a static method in my ABC Method. What are the pro's and con's on making this change? Will it not lead to the same? I don't foresee having other classes inherit ABC, but one never knows! Thanks

    Read the article

  • Facebook Connect on iPhone question

    - by TheGambler
    When you use facebook connect on the iPhone do you have to use the supplied login button and login screen built into the framework? The reason I ask is because I'm also using twitter and I would like to have the same user experience when they log in to user as they have when they log in to facebook. So I can either replicate the login screen facebook connect uses for twitter or just not use the facebook connect login screen all together.

    Read the article

  • C Pointer Question: &(*struct->struct)

    - by NTek
    I have a struct defined with the structure as follows (names are different) struct str1 { int field1; struct str2; } And I have a *str1 in a function. I'd like to get a pointer to str2. So I tried &(str1->str2) and was hoping this would return a pointer to str2. Is this incorrect? It doesn't seem to be working. How would I get a pointer to str2 if given a pointer to str1?

    Read the article

  • A trivial Python SWIG error question

    - by Alex
    I am trying to get Python running with swig to do C/C++. I am running the tutorial here, 'building a python module'. When I do the call gcc -c example.c example_wrap.c -I /my_correct_path/python2.5 I get an error: my_correct_path/python2.5/pyport.h:761:2: error: #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)." example_wrap.c: In function 'SWIG_Python_ConvertFunctionPtr': example_wrap.c:2034: warning: initialization discards qualifiers from pointer target type example_wrap.c: In function 'SWIG_Python_FixMethods': example_wrap.c:3232: warning: initialization discards qualifiers from pointer target type It actually does create an example.o file, but it doesn't work. I am using python2.5 not 2.1 as in the example, is this a problem? The error (everything else is just a 'warning') says something about wrong platform. This is a 64bit machine; is this a problem? Is my gcc configured wrong for my machine? How do I get past this? UPDATE: I am still having problems. How do I actually implement this "fix"?

    Read the article

  • Javascript Prototyping Question

    - by Nick Lowman
    I'm just reading about Prototypes in JavaScript and Douglas Crockford offers and excellent way to select a new objects prototype but can anyone explain (below) why obj01's type equals 'object' when I pass it in function as it's prototype? if (typeof Object.beget !== 'function') { Object.beget = function (o) { console.log(typeof o);//function var F = function () {}; F.prototype = o; console.log(typeof F);//function return new F(); }; } var func01 = function(){}; var obj01 = Object.beget(func01); console.log(typeof obj01);//object console.log(typeof obj01.prototype);//object I thought it would be console.log(typeof obj01);//function console.log(typeof obj01.prototype);//function

    Read the article

  • SQL CASE WHEN NULL - question

    - by cc0
    Ok, so I'm trying to select an amount of rows from a column that holds the value 3, but only if there are no rows containing 10 or 4, if there are rows containing 10 or 4 I only want to show those. What would be a good syntax to do that? So far I've been attempting a CASE WHEN statement, but I can't seem to figure it out. Any help would be greatly appreciated. (My database is in an MS SQL 2008 server)

    Read the article

  • iPhone/Objective-C struct question my own CGRectZero

    - by Mark
    I am designing a Padding struct as follows: /* Padding. */ struct CGPadding { CGFloat left; CGFloat top; CGFloat right; CGFloat bottom; }; typedef struct CGPadding CGPadding; CG_INLINE CGPadding CGPaddingMake(CGFloat left, CGFloat top, CGFloat right, CGFloat bottom) { CGPadding p; p.left = left; p.top = top; p.right = right; p.bottom = bottom; return p; } This all works perfectly well, the problem is how can I create a const CGPadding CGPaddingZero? If I do like this: const CGPadding CGPaddingZero = (CGPadding){0.0, 0.0, 0.0, 0.0}; It doesnt work. So what am I doing wrong?

    Read the article

  • Servlet Security question about j_security_check, j_username and j_password

    - by Nitesh Panchal
    Hello, I used jdbcRealm in my web application and it's working fine. I defined all constraints also in my web.xml. Like all pages of url pattern /Admin/* should be accessed by only admin. I have a login form with uses standard j_security_check, j_username and j_password. Now, when i type Admin/home.jsf it rightly redirects me login.jsf and there when i type the password i am redirected to home.jsf. This works alright but problem comes i directly go to login.jsf and then type password and username. This time it again redirects me to login.jsf. Is there any way through which i can specify which page to go when successful login is there? I need to specify different different pages for different roles. For Admin, it is /Admin/home.jsf for general users it is /General/home.jsf because login form is shared between different type of users. Where do i specify all these things? Secondly, i want to have a remember me checkbox at the end of login form. How do i do this? By default, it is submitted to j_security_check servlet and i have no control over its execution. Please help. This doesn't seem so hard but looks like i am missing something.

    Read the article

  • JQuery Tabbed Nav Menu and PHP Forms Question?

    - by SlAcKeR
    I'm using a JQuery Tabbed Menu which holds different types of forms and when I select a different form located under a different tab and submit the form the tab will jump to the default tab instead of the current tab the form is located in. I was wondering how would I go about fixing this so that when the form is submitted the current tab is still selected, is it the JQuery or PHP problem? Here is the JQuery. $(document).ready(function() { //When page loads... $(".form-content").hide(); //Hide all content var firstMenu = $("#home-menu ul li:first"); firstMenu.show(); firstMenu.find("a").addClass("selected-link"); //Activate first tab $(".form-content:first").show(); //Show first tab content //On Click Event $("#home-menu ul li").click(function() { $("#home-menu ul li a").removeClass("selected-link"); //Remove any "selected-link" class $(this).find("a").addClass("selected-link"); //Add "selected-link" class to selected tab $(".form-content").hide(); //Hide all tab content var activeTab = $(this).find("a").attr("href"); //Find the href attribute value to identify the selected-link tab + content $(activeTab).fadeIn(); //Fade in the selected-link ID content return false; }); });

    Read the article

  • Challenging question find if there is an element repeating himself n/k times

    - by gleb-pendler
    here how it's goes: You have an array size n and a constant k (whatever) you can assume the the array of int type tho it kind be of whatever type but just for the clearane let assume it's an integer. Describe an algorithm that finds if there is an element/s that repeat itself at least n/k times... if there is return one - do it in linear time running O(n) Imortent: now the catch do this algorithm or even pseuo-code using a constant usage of memory and running over the array only TWICE!!!

    Read the article

  • iPhone WebApp Question

    - by Henry D'Andrea
    I have this code- /** Save the web view as a screenshot. Currently only supports saving to the photo library. / - (void)saveScreenshot:(NSArray)arguments withDict:(NSDictionary*)options { CGRect screenRect = [[UIScreen mainScreen] bounds]; CGRect imageRect = CGRectMake(0, 0, CGRectGetWidth(screenRect), CGRectGetHeight(screenRect)); UIGraphicsBeginImageContext(imageRect.size); [webView.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); UIImageWriteToSavedPhotosAlbum(viewImage, self, nil, nil); UIAlertView *alert= [[UIAlertView alloc] initWithTitle:nil message:@"Image Saved" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; } This is for saving whatever you drew in my app. How would I add the button for this in the HTML code. How do i call from it?

    Read the article

  • java.math.BigInteger pow(exponent) question

    - by Jan Kraus
    Hi, I did some tests on pow(exponent) method. Unfortunately, my math skills are not strong enough to handle the following problem. I'm using this code: BigInteger.valueOf(2).pow(var); Results: var | time in ms 2000000 | 11450 2500000 | 12471 3000000 | 22379 3500000 | 32147 4000000 | 46270 4500000 | 31459 5000000 | 49922 See? 2,500,000 exponent is calculated almost as fast as 2,000,000. 4,500,000 is calculated much faster then 4,000,000. Why is that? To give you some help, here's the original implementation of BigInteger.pow(exponent): public BigInteger pow(int exponent) { if (exponent < 0) throw new ArithmeticException("Negative exponent"); if (signum==0) return (exponent==0 ? ONE : this); // Perform exponentiation using repeated squaring trick int newSign = (signum<0 && (exponent&1)==1 ? -1 : 1); int[] baseToPow2 = this.mag; int[] result = {1}; while (exponent != 0) { if ((exponent & 1)==1) { result = multiplyToLen(result, result.length, baseToPow2, baseToPow2.length, null); result = trustedStripLeadingZeroInts(result); } if ((exponent >>>= 1) != 0) { baseToPow2 = squareToLen(baseToPow2, baseToPow2.length, null); baseToPow2 = trustedStripLeadingZeroInts(baseToPow2); } } return new BigInteger(result, newSign); }

    Read the article

  • PHP Form checkbox question

    - by Sef
    Hello, I have a form that takes the following inputs: Name: IBM Surface(in m^2): 9 Floor: (Checkbox1) Phone: (Checkbox2) Network: (Checkbox3) Button to send to a next php page. All those values above are represented in a table when i press the submit button. The first two (name and surname) are properly displayed in the table. The problem is with the checkboxes. If i select the first checkbox the value in the table should be presented with 1. If its not selected the value in the table should be empty. echo "<td>$Name</td>"; // works properly echo "<td>$Surface</td>"; // works properly echo "<td>....no idea for the checkboxes</td>; Some part of my php code with the variables: <?php if (!empty($_POST)) { $standnaam = $_POST["name"]; $oppervlakte = $_POST["surface"]; $verdieping = $_POST["floor"]; $telefoon = $_POST["telefoon"]; $netwerk = $_POST["netwerk"]; if (is_numeric($surface)) { $_SESSION["name"]=$name; $_SESSION["surface"]=$surface; header("Location:ExpoOverzicht.php"); } else { echo "<h1>Wrong input, Pleasee fill in again</h1>"; } if(!empty($floor) && ($phone) && ($network)) { $_SESSION["floor"]=$floor; $_SESSION["phone"]=$phone; $_SESSION["network"]=$network; header("Location:ExpoOverzicht.php"); } } ?> Second page with table: <?php $name= $_SESSION["name"]; $surface= $_SESSION["surface"]; $floor= $_SESSION["floor"]; $phone= $_SESSION["phone"]; $network= $_SESSION["network"]; echo "<table class=\"tableExpo\">"; echo "<th>name</th>"; echo "<th>surface</th>"; echo "<th>floor</th>"; echo "<th>phone</th>"; echo "<th>network</th>"; echo "<th>total price</th>"; for($i=0; $i <= $_SESSION["name"]; $i++) { echo "<tr>"; echo "<td>$name</td>"; // gives right output echo "<td>$surface</td>"; // gives right output echo "<td>...</td>"; //wrong output (ment for checkbox 1) echo "<td>...</td>"; //wrong output (ment for checkbox 2) echo "<td>...</td>"; //wrong output (ment for checkbox 3) echo "<td>....</td>"; echo "</tr>;"; } echo "</table>"; <form action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="post" id="form1"> <h1>Vul de gegevens in</h1> <table> <tr> <td>Name:</td> <td><input type="text" name="name" size="18"/></td> </tr> <tr> <td>Surface(in m^2):</td> <td><input type="text" name="surface" size="6"/></td> </tr> <tr> <td>Floor:</td> <td><input type="checkbox" name="floor" value="floor"/></td> </tr> <tr> <td>Phone:</td> <td><input type="checkbox" name="phone" value="phone"/></td> </tr> <tr> <td>Network:</td> <td><input type="checkbox" name="network" value="network"/></td> </tr> <tr> <td><input type="submit" name="verzenden" value="Verzenden"/></td> </tr> </table> There might be a few spelling mistakes since i had to translate it. Best regards.

    Read the article

  • php and mysql site design question

    - by Jacksta
    I am trying to build a website with mysql and php. This is the first site I have attempted so I want to write a little plan and get some feedback. The site allows users to add some text in a text field as a “comment”. Once the comment has been entered into the site it is added to the database where it can be voted for by other users. When a new comment has been added to the database it needs to create a new page, e.g. www.xxxxx.com/commentname or www.xxxxxx.com/?id=99981. There will be a list of "Comments" in the database along with the number of votes for each comment. The home page will have two functions. 1) Allow users to add a "comment" 2) Display two tables, each with 20 rows containing most "popular comments" and "recent comments" Each comment will generate its one page where the comment will be displayed. Here users can read the comment and Vote for the comment if they wish. Please help me out by explaining how to do the following. -Generate a new page whenever a comment is added to the database -Add a vote to the vote count in the comment database. -Display the top 20 most popular comments as per number of votes.

    Read the article

  • Zend Framework Autoloader question.

    - by Andre
    In zend framework I register my namespace like this (in application.php): 'autoloaderNamespaces' => array( 'Cms_' ) And after this - I'd expect that Zend would always check that path in addition to Zend and ZendX paths if unknown class is called. But for some reason this doesn't work with for example view helpers. I still have to register a separate path for my view helpers even though view helper scripts are named according to Zend coding standards and are located in: Cms/View/Helper/ And this is how I register helper path in config file: view' => array( 'charset' => 'UTF-8', 'doctype' => 'XHTML1_TRANSITIONAL', 'helperPath' => array( 'Cms_View_Helper_' => 'Cms/View/Helper' ) ), So - I'm not sure why I have to register "Cms" namespace twice first through 'autoloaderNamespaces' and then through View "helperPath"? Shouldn't Cms namespace include Cms/View/Helper namespace? can someone plz clarify this:)

    Read the article

  • VB.NET: question about "using" block

    - by Craig Johnston
    Consider the code: On Error Goto ErrorHandler Using sr As StreamReader = New StreamReader(OpenFile) str = sr.ReadToEnd sr.Close() End Using Exit Sub ErrorHandler: If there is an error inside the Using block how do you clean up the sr object? The sr object is not in scope in ErrHandler so sr.Close() cannot be called. Does the Using block cleanup any resources automatically even if there is an error?

    Read the article

  • javascript singleton question

    - by Shawn
    I just read a few threads on the discussion of singleton design in javascript. I'm 100% new to the Design Pattern stuff but as I see since a Singleton by definition won't have the need to be instantiated, conceptually if it's not to be instantiated, in my opinion it doesn't have to be treated like conventional objects which are created from a blueprint(classes). So my wonder is why not just think of a singleton just as something statically available that is wrapped in some sort of scope and that should be all. From the threads I saw, most of them make a singleton though traditional javascript new function(){} followed by making a pseudo constructor. Well I just think an object literal is enough enough: var singleton = { dothis: function(){}, dothat: function(){} } right? Or anybody got better insights? [update] : Again my point is why don't people just use a simpler way to make singletons in javascript as I showed in the second snippet, if there's an absolute reason please tell me. I'm usually afraid of this kind of situation that I simplify things to much :D

    Read the article

  • Question about variable definitions in functions.

    - by Kaan Tekelioglu
    Hi. #include <stdio.h> main() { int a; for(a=1; a<=4 && printf("%d ",a); a++) { int a; static int b=a; printf("%d ",(a++)-b); } getchar(); getchar(); } In this code, the printout is 1 0 2 1 3 2 4 3. I understand why the int a; part works differently then the int a which was defined outside the for function, and why static int b; is only defined once with the primary value of a ; but why does the (a++) part in printf affect proceeding values of a? Don't we redefine int a; each time the for function runs? Thanks in advance.

    Read the article

  • Try::Tiny-Question

    - by sid_com
    Why doesn't the subroutine with try/catch give me the same results as the eval-version does. #!/usr/bin/env perl use warnings; use strict; use 5.012; use Try::Tiny; sub shell_command_1 { my $command = shift; my $timeout_alarm = shift; my @array; eval { local $SIG{ALRM} = sub { die "timeout '$command'\n" }; alarm $timeout_alarm; @array = qx( $command ); alarm 0; }; die $@ if $@ && $@ ne "timeout '$command'\n"; warn $@ if $@ && $@ eq "timeout '$command'\n"; return @array; } shell_command_1( 'sleep 4', 3 ); say "Test_1"; sub shell_command_2 { my $command = shift; my $timeout_alarm = shift; my @array; try { local $SIG{ALRM} = sub { die "timeout '$command'\n" }; alarm $timeout_alarm; @array = qx( $command ); alarm 0; } catch { die $_ if $_ ne "timeout '$command'\n"; warn $_ if $_ eq "timeout '$command'\n"; } return @array; } shell_command_2( 'sleep 4', 3 ); say "Test_2"

    Read the article

  • Simple question: How to change div title using jquery

    - by user281180
    I have the following code: <div id="DivPassword" title="test" > I want to change the div title and I have the following code: function ChangeAttribute() { $("#DivPassword") .attr('title', 'Photo by Kelly Clark'); $('#DivPassword').dialog('open'); return false; } When the dialog is opened, the title is still test! if I dont assign any title to the div, the dialog doesnt show any title. How can I correct that?

    Read the article

  • Parsing question

    - by j-t-s
    Hi All I have tried using several different parsers as advised by somebody but i don't believe that they'd be of any use for this particular situation. I have a file that looks like this: mylanguagename(main) { OnLoad(protected) { Display(img, text, link); } Canvas(public) { Image img: "Images\my_image.png"; img.Name: "img"; img.Border: "None"; img.BackgroundColor: "Transparent"; img.Position: 10, 10; Text text: "This is a multiline str#ning. The #n creates a new line."; text.Name: text; text.Position: 10, 25; Link link: "Click here to enlarge img."; link.Name: "link"; link.Position: 10, 60; link.Event: link.Clicked; } link.Clicked(sender, link, protected) { Link link: from sender; Message.Display: "You clicked link."; } } ... and I need to be able to parse that code above, so and convert it to a Javascript equivelent, (or JScript). Can somebody please help, or get me started in the right direction? Thanks

    Read the article

  • Simple question C#.net about if else statement

    - by ilkdrl
    Iam doing a simple website and when i press button, i should see weight in label.. i see but if text.maxlenght 6, i should see ERROR message in same label but repeat see weight in label. How can i solve this problem? protected void Button1_Click(object sender, EventArgs e) { double sayi1, sayi2, sayi3, hesap, sonuc; sayi1 = Convert.ToDouble(Tb1.Text); sayi2 = Convert.ToDouble(Tb2.Text); sayi3 = Convert.ToDouble(Tb3.Text); if (Tb1.MaxLength > 6 || Tb2.MaxLength > 6) { lbl1.Text = "ERROR."; } else { hesap = (((sayi1 - ((sayi1 - sayi2) / 2)) * ((sayi1 - sayi2) / 2)) / 40); sonuc = (hesap * sayi3) / 100; lbl1.Text = sonuc.ToString() + "kg"; } }

    Read the article

< Previous Page | 75 76 77 78 79 80 81 82 83 84 85 86  | Next Page >