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• JavaScript tags, performance and W3C

  - by Thomas

  Today I was looking for website optimization content and I found an article talking about move JavaScript scripts to the bottom of the HTML page. Is this valid with W3C's recommendations? I learned that all JavaScript must be inside of head tag... Thank you.

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• Accessing curl executable from Program files?

  - by Kaido

  I have built an application which uses user executable through WScript com object. Now the main program is located in C:\Program files\Myapp Curl executable is located in C:\Curl But it looks like my application is unable to execute curl if main application is in Program files. If i move it to another location it can execute curl nicely. Problem occurs only on Windows Xp on Vista and Win7 it works perfectly. Is there any special permissions i have to give to my app or what?

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• Custom UISlider Image not responding?

  - by Silent

  Hello all i have a custom image to replace the UISLider defult button image, all works fine image shows, it does not clip off. The problem is when i use the slider to move up and down the image dissapears and some how doesnt show up anymore only sometimes. could someone have a fix?

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• Get location of object when animation is complete in android

  - by bgm

  Is there a way to find out the final location of my animated "object" after the animation? Let's say I am animating an ImageView with location in parent as (0,0 - 20,20) using TranslateAnimation and ScaleAnimation over 1 second with setFillAfter(true). How to I find the final location of this "object" (since the View location itself does not move)? I need to continue the animation from this point based on an user input.

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• How may I scroll with vim into a big file ?

  - by Luc M

  Hello, I have a big file with thousands of lines of thousands of characters. I move the cursor to 3000th character. If I use PageDown or <CTRL>-D, the file will scroll but the cursor will come back to the first no-space character. There's is an option to set to keep the cursor in the same column after a such scroll ? I have the behavior with gvim on Window, vim on OpenVMS and Cygwin. Regards

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• I get a "An attempt was made to load a program with an incorrect format" error on a SQL Server repli

  - by baldy

  The exact error is as follows "Could not load file or assembly 'Microsoft.SqlServer.Replication, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. An attempt was made to load a program with an incorrect format." I've recently started working on this project again after a two month move to another project. It worked perfectly before, and I've double checked all the references.

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• Can the memory used by MKMapView be released some how?

  - by gdr

  I am using an MKMapView in my iPhone application. When I load this view, the activity monitor instrument shows that the real memory of my App is increasing significantly. It keeps going up as you move the map around or zoom in and out. Once the View controller that loads this view is removed, the memory that was allocated due to the usage of the mapView does not get freed up. Is there something that can be done to get all this memory back?

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• How to reduce redundant code when adding new c++0x rvalue reference operator overloads

  - by Inverse

  I am adding new operator overloads to take advantage of c++0x rvalue references, and I feel like I'm producing a lot of redundant code. I have a class, tree, that holds a tree of algebraic operations on double values. Here is an example use case: tree x = 1.23; tree y = 8.19; tree z = (x + y)/67.31 - 3.15*y; ... std::cout << z; // prints "(1.23 + 8.19)/67.31 - 3.15*8.19" For each binary operation (like plus), each side can be either an lvalue tree, rvalue tree, or double. This results in 8 overloads for each binary operation: // core rvalue overloads for plus: tree operator +(const tree& a, const tree& b); tree operator +(const tree& a, tree&& b); tree operator +(tree&& a, const tree& b); tree operator +(tree&& a, tree&& b); // cast and forward cases: tree operator +(const tree& a, double b) { return a + tree(b); } tree operator +(double a, const tree& b) { return tree(a) + b; } tree operator +(tree&& a, double b) { return std::move(a) + tree(b); } tree operator +(double a, tree&& b) { return tree(a) + std::move(b); } // 8 more overloads for minus // 8 more overloads for multiply // 8 more overloads for divide // etc which also has to be repeated in a way for each binary operation (minus, multiply, divide, etc). As you can see, there are really only 4 functions I actually need to write; the other 4 can cast and forward to the core cases. Do you have any suggestions for reducing the size of this code? PS: The class is actually more complex than just a tree of doubles. Reducing copies does dramatically improve performance of my project. So, the rvalue overloads are worthwhile for me, even with the extra code. I have a suspicion that there might be a way to template away the "cast and forward" cases above, but I can't seem to think of anything.

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• Opinions on collision detection objects with a moving scene

  - by Evan Teran

  So my question is simple, and I guess it boils down to how anal you want to be about collision detection. To keep things simple, lets assume we're talking about 2D sprites defined by a bounding box. In addition, let's assume that my sprite object has a function to detect collisions like this: S.collidesWith(other); Finally the scene is moving and "walls" in the scene can move, an object may not touch a wall. So a simple implementation might look like this (psuedo code): moveWalls(); moveSprite(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } The problem with this is that if the sprite and wall move towards each other, depending on the circumstances (such as diagonal moment). They may pass though each other (unlikely but could happen). So I may do this instead. moveWalls(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } moveSprite(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } This takes care of the passing through each other issue, but another rare issue comes up. If they are adjacent to each other (literally the next pixel) and both the wall and the sprite are moving left, then I will get an invalid collision since the wall moves, checks for collision (hit) then the sprite is moved. Which seems unfair. In addition, to that, the redundant collision detection feels very inefficient. I could give the player movement priority alleviating the first issue but it is still checking twice. moveSprite(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } moveWalls(); foreach(wall as w) { if(s.collidesWith(w)) { gameover(); } } Am I simply over thinking this issue, should this just be chalked up to "it'll happen rare enough that no one will care"? Certainly looking at old sprite based games, I often find situations where the collision detection has subtle flaws, but I figure by now we can do better :-P. What are people's thoughts?

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• How to capture each frame of a USB webcam using VB.net?

  - by Kevin Boyd

  While I have got some leads from an older SO post and from this site, I haven't been able to figure out how to capture each frame of a web-cam. What I would like to do is something like this capture a frame then do some image processing on it and display the output and then move on to the next frame. Can I can access to web-cam frame events or is there any efficient way to achieve this?

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• get city state from google map

  - by apueee

  I'm using google map api for showing location. In that i case i need option to get city sate zip from google map marker. In map , user can move the marker to position it after drag finished it will return the city, state and zip. I have successfully get the lat and lng but how can i get the city , state and zip. please help me as soon as possible..

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• Can Adding Namespace to my current website, will give me any performance or flexibility Gain?

  - by ManojTrek

  Hi, We have quite Large Web Based System, which is recently converted from Website to WebApplication, when it was an Website we not have any classes marked under the standard MyCompany.UI Namespace, now I am planning to move all the classes under the namespace, will I gain anything with doing that? Thanks, Manoj

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• Style, set to Qt application, vanishes, when QDockWindow or QToolBar is being unattached.

  - by Max

  Style, set to Qt application, vanishes, when QDockWindow or QToolBar is being unattached. Application is designed to work in Windows XP environment, most of users use it's 'classic' scheme, and application's style is Cleanlooks. It looks fine, until one want to undock dockable window or move toolbar. CLeanlooks vanishes, and it is rather ugly. Is there any workaround to handle this?

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• infix operation to postfix using stacks

  - by Chris De La O

  We are writing a program that needs to convert an infix operation (4 5/3) to postfix (4 5 3 / ) using stacks. however my convert to postfix does not work as it doesnt not output the postFix array that is supposed to store the conversion from infix notation to postfix notation. here is the code for the convertToPostix fuction. //converts infix expression to postfix expression void ArithmeticExpression::convertToPostfix(char *const inFix, char *const postFix) { //create a stack2 object named cow Stack2<char> cow; cout<<postFix; char thing = '('; //push a left parenthesis onto the stack cow.push(thing); //append a right parenthesis to the end of inFix array strcat(inFix, ")"); int i = 0;//declare an int that will control posFix position //if the stack is not empty if (!cow.isEmpty()) { //loop to run until the last character in inFix array for (int x = 0; inFix[x]!= '\0'; x++ ) { //if the inFix element is a digit if (isdigit(inFix[x])) { postFix[i]=inFix[x];//it is assigned to the next element in postFix array i++;//move on to next element in postFix } //if the inFix element is a left parenthesis else if (inFix[x]=='(') { cow.push(inFix[x]);//push it unto the stack } //if the inFix element is an operator else if (isOperator(inFix[x])) { char oper2 = inFix[x];//char variable holds inFix operator if (isOperator(cow.stackTop()))//if the top node in the stack is an operator { while (isOperator(cow.stackTop()))//and while the top node in the stack is an operator { char oper1 = cow.stackTop();//char variable holds node operator if(precedence( oper1, oper2))//if the node operator has higher presedence than node operator { postFix[i] = cow.pop();//we pop such operator and insert it in postFix array's next element cow.push(inFix[x]);//and push inFix operator unto the stack i++;//move to the next element in posFix } } } //if the top node is not an operator //we push the current inFix operator unto the top of the stack else cow.push(inFix[x]); } //if the inFix element is a right parenthesis else if (inFix[x]==')') { //we pop everything in the stack and insert it in postFix //until we arrive at a left paranthesis while (cow.stackTop()!='(') { postFix[i] = cow.pop(); i++; } //we then pop and discard left parenthesis cow.pop(); } } postFix[i]='\0'; //print !!postFix array!! (not stack) print();//code for this is just cout<<postFix; }

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• Rotating and Moving a UIImageView (CocoaTouch)

  - by yar

  This code works to rotate: CGAffineTransform transform = CGAffineTransformMakeRotation(radians(lastAngle++)); anImage.transform = transform; and this code works to move my UIImageView CGRect frame = [anImage frame]; frame.origin.x+=1; frame.origin.y+=1; [anImage setFrame:frame]; but when I combine them, the image stretches out increasingly on each run through. Perhaps the frame should not be modified like this?

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• Activating Webkit CSS3 animation using Javascript

  - by jeffreyveon

  I am looking to use Webkit CSS3 to move a absolutely positioned DIV from one location to another on the screen when a button is pressed, by changing its left and right CSS properties. However, all the examples for doing this that I saw use a static CSS rule to apply this transition. I don't know the new position before hand, so how do I apply this CSS3 transition dynamically?

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• Scraping data from Flash (Games)

  - by awegawef

  I saw this video, and I am really curious how it was performed. Does anyone have any ideas? My intuition is that he scraped pixels from the screen (one per 'box'), and then fed that into some program to determine the next move. Is scraping pixel-by-pixel the way to do this, or is there a better way? I am looking to do something similar with either Java or Python. Thanks

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• Should I use my models in a library?

  - by Piers

  I've got my auth library in codeigniter which accesses the database to check to see if the email/password combination is correct. If I'm sticking to the MVC practice, should I move the function that interacts with the database to my model, or is it best practice to leave it where it is so I can use it in the future? Doesn't make much difference to me, other than the fact I'd have to re-write the library and create the function in my model, but if that's the way it should be then so be it.

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• Sprite not moving when using a function from another class SFML c++

  - by user2892932

  I have a Game.cpp, and I am calling a update function in my Player class. In my player update Function I have it to check for keyboard input, and it seems to work, but whenever I try to call the .move() function, it seems to not work. I get no errors either. I am new to sfml, and decent with c++. Help is appreciated! #include "Player.h" Player::Player(void): vel(0), maxvel(100) { Load("Assets/sss.png",true); } void Player::Update(sf::Sprite& p) { if (sf::Keyboard::isKeyPressed(sf::Keyboard::A)) { moveObject(-3,0, p); } if(sf::Keyboard::isKeyPressed(sf::Keyboard::D)) { moveObject(-3,0, p); } } Player::~Player(void) { } This is the GameObject cpp #include "GameObject.h" #include <iostream> GameObject::GameObject(void) { isLoaded = false; } void GameObject::Load(std::string flname, bool isPlayer) { if(!tex.loadFromFile(flname)) { EXIT_FAILURE; } else { if(isPlayer) { if(!tex.loadFromFile(flname, sf::IntRect(0,0,33,33))) { EXIT_FAILURE; } else { std::cout << "Loading image" << "\n"; filename = flname; spr.setTexture(tex); isLoaded = true; } } else { std::cout << "Loading image" << "\n"; filename = flname; spr.setTexture(tex); isLoaded = true; } } } void GameObject::Draw(sf::RenderWindow & window) { if(isLoaded) { window.draw(spr); window.display(); std::cout << "Sprite drew" << "\n"; } } void GameObject::setPos(float x, float y) { if(isLoaded) { spr.setPosition(x,y); } } sf::Vector2f GameObject::GetObjPos() { return spr.getPosition(); } sf::Sprite& GameObject::getSprite() { return spr; } void GameObject::moveObject(float x, float y, sf::Sprite& sp) { sp.move(x, y); } GameObject::~GameObject(void) { }

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• PostgreSQL + Rails citext

  - by glebm

  I am trying to move to heroku which uses PostgreSQL 8.4 which has a citext column type which is nice since the app was written for MySQL. Is there any way to use :citext with rails (so that if the migrations are run on MySQL the citext would just use string/text? I found this ticket, but it seems like it isn't going to be a part of rails for a while: https://rails.lighthouseapp.com/projects/8994/tickets/3174-add-support-for-postgresql-citext-column-type

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• css coding on Myspace - Problem

  - by Frederik Wessberg

  Hey Folks. I've read what I could, and I'm certainly no master, but I'm fixing up a colleagues profile on myspace.com, and im working with 2 divs in each side of the screen, and I want them to align so that they are next to each other. I've tried float: left; and float: right;, and I've tried margin: right; on div 1 and such. Could you help? Here's the site: http://www.myspace.com/jonasjohansen This is info for div1: <div class="textBox" align="left" style="width: 290px; word-wrap:break-word"> <span class="orangetext15"> BANDS </span> <b>MOVE</b><br /> Fredrik ....balbalbalbla </div> <style> .textBox { position: relative; left:-320px; top:0px; width: 290px; height: 350px; overflow-y: visible; overflow-x: visible; top: YYYpx; z-index: 3; background-color: transparent; border:none; } </style> This is info for div2: <style>.i {display:none;}{!-eliminate bio header!-}table table td.text table td.text {display:none;}{!-recover in shows and friends-!}table table td.text div table td.text,table table td.text table.friendSpace td.text {display:inline;}{! move up our custom section. You may change px value !}div.myDivR {position:relative; top:0px; margin-bottom:-300px; }{! you can apply style to the custom div !}div.myDivR {background-color:white; border:2px solid; border-color:darkgreen; float: right;}</style></td></tr></table></td></tr></table><span class="off">Re-Open Bio Table give it our own Class </span><table class="myBio" style="width:435px;"><tr><i class="i"></i><td class="myBioHead" valign="center" align="left" width="auto" bgcolor="ffcc99" height="17"> &nbsp;&nbsp;<span class="orangetext15"> ABOUT JONAS JOHANSEN</span> </td></tr><tr><td><table class="myBioI"><tr><td><span class="off"></span> blalbalbalbalbla <span class="off">END Bio Content </span>

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• how can i develop a command prompt based line editor utility ?.

  - by balaji

  so user will be able to edit/modify/view the content of the actual physical file. command like open, show, append, delete,swap,move,close,exit should be work on that command line.

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• sql CE 3.5 pros and cons

  - by Buzz

  Hi, Currently we are using xml files as local data store for our disconnected application, there is proposal to move to SQL CE database. Can some one with experience of SQL CE provide some pros and cons of using sql compact, for example data type support etc. As Central DB server we are using SQL Server2005. One of the requirement is to merge local store with central DB, and we don't want any data loss. Thanks

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• How to select non-consecutive options of multiple select using keyboard in IE

  - by Yan

  Using only keyboard, how can I select non-consecutive options of a multiple select element. On Firefox or Windows explorer, I can simply ctrl+Arrow to move the focus and then space bar to select. But I don't see any way to make it work on IE. Thanks

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• Copying 6000 tables and data from sqlserver to oracle ==> fastest method?

  - by nazer555

  i need to copy the tables and data (about 5 yrs data, 6200 tables) stored in sqlserver, i am using datastage and odbc connection to connect and datstage automatically creates the table with data, but its taking 2-3 hours per table as tables are very large(0.5 gig, 300+columns and about 400k rows). How can i achieve this the fastes as at this rate i am able to only copy 5 tables per day but within 30 days i need move over these 6000 tables.

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