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• Scaling up an image

  - by codefail

  How do I fulfill the condition "returns the entire scaled up image" If I am coding this correctly, scaleColor handles individual colors, getRed handles the red, etc. I am multiplying this by the input, numTimes, which will create a new image that is scaled up it. This scaled up (increase size) is to be returned. This is what I have. Image Image::scaleUp(int numTimes) const { for (int x = 0; x < width; x++) { for (int y = 0; y < height; y++) { pixelData[x][y].scaleColor(pixelData[x][y].scaleRed(pixelData[x][y].getRed()*numTimes)); pixelData[x][y].scaleColor(pixelData[x][y].scaleGreen(pixelData[x][y].getGreen()*numTimes)); pixelData[x][y].scaleColor(pixelData[x][y].scaleBlue(pixelData[x][y].getBlue()*numTimes)); } } //return Image(); }

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• SVN Attribution Plugin?

  - by Rosarch

  I'm using SVN with Google Code Project Hosting for a school project. As the codebase increases in size, I often find myself wondering questions like: "who originally checked in this line of code?" "who has been checking in the most code recently?" "Of the final product, how much of it was written by Person X?" "Which coder is best at adhering to the coding conventions?" Is there any plugin available to do this? (If not, I would be interested in developing one myself. Any ideas on where to get started on that?) We're using Visual Studio 2008 with the AnkhSVN plugin.

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• Code Review "ToDo" Follow Up Items

  - by Blake Blackwell

  I am trying to institute code reviews at my company, and recently we had our first code review meeting. During the meeting, several positive suggestions were made and I added TODO comments in my code for following up. After reading suggestions on here on best practices for code reviews, I would like to follow up on all the items I corrected at the start of the next meeting. Is there a way to add a similar type of comment to the code such as FOLLOWUP so that I can quickly highlight through those code segments in the next meeting?

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• what's the "best" approach to creating the UI of an audio plugin that will be both audio unit and VST for OS X and Windows?

  - by SaldaVonSchwartz

  I'm working on a couple audio plugins. Right now, they are audio units. And while the "DSP" code won't change for the most part between implementations / ports, I'm not sure how to go about the GUI. For instance, I was looking at the Apple-supplied AUs in Lion. Does anyone know how did they go about the UI? Like, are the knobs and controls just subclasses of Cocoa controls? are they using some separate framework or coding these knobs and such from scratch? And then, the plugs I'm working on are going to be available too as VSTs for Windows. I already have them up and running with generic interfaces. But I'm wondering if I should just get over it and recreate all my interfaces with the vstgui code provided by Steinberg or if there's a more practical approach to making the interfaces cross-platform.

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• Condensing multiple else if statements, referencing them from a table?

  - by Haskella

  Hi I'm about to type some 500 else if statements into my code (PHP) which have the exact same coding each: if (color=White); rgb = 255-255-255; print rgb; else if (color=Black); rgb = 0-0-0; print rgb; else if (color=Red); rgb = 255-0-0; print rgb; else if (color=Blue); rgb = 0-0-255; print rgb; [the list keeps going] I also (luckily) have a table that displays the color in the first column and rgb value in the next column for 500 of them... how do I use this to save time typing all those else if statements? Some how I have to reference the table file (made in excel, I'm guessing I'll have to save it as .csv?)

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• Payment Gateway Question

  - by Sphynx

  Hi, My question is not exactly about coding, and I'm not sure if I can ask it here. Nevertheless, it's somewhat related to the payment integration process. I'm going to establish a service, and deliver it through a website. When you accept payments through PayPal, they display your actual name to every client, and I'm not that comfortable with such lack of privacy. Is there any way around that? Perhaps an alternative payment gateway that doesn't display your personal info to everyone? Any suggestions welcome! Thanks

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• Where to split a string literal

  - by quinmars

  Every time I have to split a long string literal into two (or more) pieces, because it does not fit into a single line, I have to decide if I split the text before or after a space. For example: const char * long_text1 = "This is a long text, which does not fit " "in one line"; /* or */ const char * long_text2 = "This is a long text, which does not fit" " in one line"; I tend to use the first way, but I do not have a real reason for it. So I wonder is there any advantage to favor one of them? I know this questions tend to be coding style question, but that's not my intend. I only want to know if there is a convincing reason why one of those two ways might be preferable.

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• Table View Page Control Code

  - by PerwyL

  Hi Everyone this is what i want to achieve 1) Have a page control that allows user to do a swipe to 6 different pages 2) each page is a table view controller 3) everything is done via code NOT IB The tutorials that are i find either use VIEW CONTROLLER or is done via IB. I am not very good with IB and prefer to have everything done via coding. I have a TableViewController.h and TableViewController.m When the user navigate to the TableViewController view, my application will display a table view (filled with some information), when the user swip to the next page, another page (table view) will appear with another set of information... I am very new to objective-c and iphone programing...can some one pls guide me on how to achieve the above or is there another way to doing things? oh yar....i have a tab bar controller as my root controller...and for one of the tab (tab A) i have a navigation controller and my TableViewControllers falls inside tab A. THANKS IN ADVANCE!!!

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• Constant Expected "{" before ")" token

  - by Thijs

  I've got a little problem. I am applying some changes to an iOS program i wrote, but I've struck a problem. I constantly get a "Expected '{' before ')' token" warning, but my coding skills aren't good enough to find the problem. A little help would greatly be appreciated. #import "Search.h" #import "RootViewController.h" //button - (IBAction)buttonPressed)sender{ RootViewController *newview = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:nil]; [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.5]; [UIView setAnimationTransition:UIViewAnimationTransitionFl ipFromRight forView:self.view cache:YES]; [self.view addSubview:newview.view]; [UIView commitAnimations]; @implementation Search @end

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• How do I use Mercurial?

  - by Derek

  I'm assuming Mercurial is for having an updated website and it archiving the old stuff? Easy to test things and such? My question is, how exactly should I get started and can somebody give me a crash course in using Mercurial and using the following techs below: Notepad++ for coding FTP PHP/MySQL Jquery & other js libraries I use windows and would like to keep things fairly simple. I'm developing 1 website currently and want some kind of CVS system in place. Or should I just stick to my current edit file in notepad++ and upload via ftp method and make a backup copy of everything every once and a while? Any thoughts? EDIT: I'm doing http://bugtracker.gttools.com/public/wiki/bluehost/Mercurial right now in order to try and 'install' it.

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• Inline javascript performance.

  - by Geromey

  I know it is better coding practice to avoid inline javascript like: <img id="the_image" onclick="do_this(true);return false;"/> I am thinking about switching this kind of stuff for bound jquery click events like: $("#the_image").bind("click",function(){ do_this(true); return false; }); Will I lose any performance if I bind a ton of click events? I am not worried about the time it takes to initially bind the events, but the response times between clicking and it happening. I bet if there is a difference, it is negligible, but I will have a ton of functions bound. I'm wondering if browsers treat the onclick attribute the same way as a bound event. Thanks

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• New to C# and trying to use a global variable

  - by Andrew G. Johnson

  Is it possible to use global variables in C#? I'm coming from mainly a PHP background so variables are either accessible everywhere or just a global definition away. My main issue is I have a User class that I built myself to wrap around the current users table on my company's database. I am defining it in the MasterPage but can't seem to access it from the actual pages (I don't know if there's a better word to describe them but they are the pages that inherit the styles and format from the MasterPage) Any general tips or implementation practices for me? EDIT: here's some code snippets of what I'm trying to do: Site.master.cs public partial class SiteMaster : System.Web.UI.MasterPage { public User user = new User(); } logout.aspx <%@ Page Title="" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="logout.aspx.cs" Inherits="logout" %> <%@ MasterType virtualPath="~/Site.master"%> logout.aspx.cs public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { User user = Master.user; } }

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• How can I access data that's stored in my App Delegate from my various view controllers?

  - by BeachRunnerJoe

  This question is similar to this other post, but I'm new to iPhone development and I'm getting used to the good practices for organizing my data throughout my app. I understand the ApplicationDelegate object to be the best place to manage data that is global to my app, correct? If so, how can I access data that's stored in my App Delegate from various view controllers? Specifically, I have an array of table section titles for my root table view controller created as such... appdelegate.m sectionTitles = [[NSArray alloc] initWithObjects: @"Title1", @"Title2", @"Title3", nil]; rootViewController.appDelegate = self; and I need to access it throughout the different views of my app, like such... rootviewcontroller.m NSUInteger numSections = [self.appDelegate.sectionTitles count]; Is this the best way to do it or are there any reasons I should organize my data a better way? Thanks so much in advance for your help!

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• What has bigger priority: opacity or z-index in browsers?

  - by MartyIX

  Hi, I'm coding a "popup window" in javascript and I've come across an interesting thing: http://img91.imageshack.us/img91/4761/error01cropped.png - the navy square under the popup window is visible even though I would expect it to be hidden. The popup was added after the square so it should be on the top. CSS opacity property of the navy square is 0.3 (from what I've tried it seems that every number from the interval (0,1) would yield the same result) if I change it to 1 then it behaves as expected (i.e. the part of the square under the popup is hidden). I've tried to use z-index property and set 10 for square and 100 for the popup but it doesn't change anything. What am I missing? Why is the part of square displayed? Thanks for help!

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• Typecasting a floating value or using the math.h floor* functions?

  - by nobody

  Hi, I am coding up an implementation of Interpolation Search in C. The question is actually rather simple, I need to use the floating operations to do linear interpolation to find the correct index which will eventually be an integer result. In particular my probe index is: t = i + floor((((k-low)/(high-low)) * (j-i))); where, i,j,k,t are unsigned ints, and high,low are doubles. Would this be equivalent to: t = i + (unsigned int)(((k-low)/(high-low)) * (j-i)); Is there any reason I would actually want to use math.h floor* functions over just a simple (int) typecast?

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• Exception of Binding form data to object

  - by Captain Kidd

  I'm practising Spring MVC.But fail to populate command object in Controller when I use spring standard tag. For example: "form:input path="password"" But I perfectly do this with HTML standard tag. Like: "input type="text" name="password"" I wonder the way how to use Spring tag binding data. In addition, I think configuration and coding is right in my sample. protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws Exception { UserFormBean b = (UserFormBean)command; System.out.println("s"); return super.onSubmit(request, response, command, errors); } <form:form commandName="command" action="/SpringFrame/register.html"> <form:input path="password"/> <!-- <input type="text" name="password"/> --> <input type="submit"/> </form:form>

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• Magento Design Patterns

  - by JonB

  Magento, IMHO, represents a PHP system that is built on well thought-out coding principles - reuseable design patterns being one of them. In terms of an example of a PHP system, I think it can be considered pretty cutting edge and therefore worth considering from an architectural point of view. As I understand it, there are many design patterns that are available to the OOP developer. Seeing such patterns being put to use in an open-source system such as Magento allows a developer to view examples of such patterns in real use and in situ, rather than in examples that can sometimes be rather achedemic, and even a little misleading. As such, I am wondering what patterns, other than the ones I have listed below, Magento programmers have used when developing for Magento. As a note, I understand that some of these patterns are in place as a consequence of being built on the Zend Framework, MVC / Front Controller being a couple of them, The obvious ones are: Factory: $product = Mage::getModel('catalog/product'); Singleton: $category = Mage::getSingleton('catalog/session'); Registry: $currentCategory = Mage::registry('current_category');

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• Why do SQL connection leave parameters in?

  - by acidzombie24

  While coding with sqlite everytime i always had the exact number of parameters and when i executed the query i always had 0 parameters after it. I kept using the cmd object and it worked fine. Now while porting to use sql server (2008) my SqlConnection has parameters left over from a successful command. Why? I seem to be able to create tables without the problem (then again i may have use a clone of an empty cmd since i use recursion). Does SqlCommand always leave the parameters in after a query? This always breaks the following query unless i do parameter.clear(). Should i create a new SqlCommand object? or use parameter.clear() each time? I'm somewhat confused.

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• Dot Net Nuke app_offline randomly being generated

  - by chelfers

  We have had multiple DNN sites running for quite a few months now without any issues. Twice in the last 3 days our sites have gone offline by the addition of the app_offline.htm file in the root dir. There is only one developer with access to the sites at a coding / directory viewing level and the file is generated at weird times times when he is NOT accessing our network. We are not publishing anything to the server ( and have not published any .net code in days ), upgrading, changing code, or even modifying content. Has anyone run into this issue?

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• const read only local copies

  - by robUK

  Hello gcc 4.4.4 c89 I am just wondering is it worth passing a const into a function. i.e. void do_something(const char *dest, const int size) The size is a read-only so I don't want to change it. However, some developers never have this as const has it is a local copy that is being used. The pointer is const as you can change the value in the calling routine. I always have a const on read-only local copies, as it confirms to anyone reading my code that it is a read-only variable. And also, when coding I don't make the mistake of changing it without realizing. Many thanks for any suggestions,

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• Bitwise operators versus .NET abstractions for bit manipulation in C# prespective

  - by Leron

  I'm trying to get basic skills in working with bits using C#.NET. I posted an example yesterday with a simple problem that needs bit manipulation which led me to the fact that there are two main approaches - using bitwise operators or using .NET abstractions such as BitArray (Please let me know if there are more build-in tools for working with bits other than BitArray in .NET and how to find more info for them if there are?). I understand that bitwise operators work faster but using BitArray is something much more easier for me, but one thing I really try to avoid is learning bad practices. Even though my personal preferences are for the .NET abstraction(s) I want to know which i actually better to learn and use in a real program. Thinking about it I'm tempted to think that .NET abstractions are not that bad at, after all there must be reason to be there and maybe being a beginner it's more natural to learn the abstraction and later on improve my skills with low level operations, but this is just random thoughts.

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• Converting a navbar to a tabbar app

  - by Nick

  Hey guys, I was wondering how to convert a NavigationController style app into a TabBarcontroller style app. I changed my mainwindow to not contain a navigationcontroller anymore (but a tabbarcontroller instead) and my delegate also appropiatly, but when I launch the app something still thinks I want a navigationController: Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key navigationController.' Stack trace: #0 0x020fa004 in ___TERMINATING_DUE_TO_UNCAUGHT_EXCEPTION___ #1 0x96fc0509 in objc_exception_throw #2 0x020ee1c1 in -[NSException raise] #3 0x000d8a78 in _NSSetUsingKeyValueSetter #4 0x000d84c5 in -[NSObject(NSKeyValueCoding) setValue:forKey:] #5 0x004fb4c8 in -[UIRuntimeOutletConnection connect] #6 0x020af92f in -[NSArray makeObjectsPerformSelector:] #7 0x004f9f7f in -[UINib instantiateWithOptions:owner:loadingResourcesFromBundle:] #8 0x004fbfcb in -[NSBundle(NSBundleAdditions) loadNibNamed:owner:options:] #9 0x0033b0a6 in -[UIApplication _loadMainNibFile] #10 0x0034482a in -[UIApplication _runWithURL:sourceBundleID:] #11 0x00341b88 in -[UIApplication handleEvent:withNewEvent:] #12 0x0033d6d3 in -[UIApplication sendEvent:] #13 0x003440b5 in _UIApplicationHandleEvent #14 0x0265aed1 in PurpleEventCallback #15 0x02092b80 in CFRunLoopRunSpecific #16 0x02091c48 in CFRunLoopRunInMode #17 0x0033be69 in -[UIApplication _run] #18 0x00345003 in UIApplicationMain #19 0x00002ec8 in main at main.m:14 Where can I specify the app is a tabbarcontrolled app, instead of a navigationbarcontrolled app? Thanks in advance,

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• Sharing user controls acrros multiple websites

  - by Jasper

  Hello, I am currently working on a project which involves three different websites with a lot of common functionality. At the moment the common functionality is placed in a different website full of user controls. The problem is sharing the user controls across the multiple websites. Looking around on SO and other websites, the only solution seems the be using virtual directories. As this is a workable solution (we us this at the moment) it doesn't seem as a "clean" solution. Which "best practices" exist on sharing common functionality (including the GUI/HTML) between different site? Is it (for example) possible to create a single Web Application project and deploy subdirectories (each with their own web.config) to different production environments?

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• Shipping jar with default .properties file configurations

  - by Maxim Veksler

  Hello, I would like to include a default default.properties file in my .jar library. The idea is to allow the user to override my default is he so desires. I'm having trouble getting the classloader to play nicely with this setup, I've tried to look a at popular jars such as log4j, common-* and others and it seems that no one is implementing this idea. Am I going the wrong way? The second best thing is hard coding the values, and using the default if no .properties key has been found, but this sound oh so wrong. Suggestions?

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• Is there a design pattern for injecting methods into a class?

  - by glenn I.

  I have a set of classes that work together (I'm coding in javascript). There is one parent class and a number of child classes that are instantiated by the parent class. I have a number of clients of these classes that each need to add on one more methods to the parent or child classes. Rather than having each client inherit from these classes, which is doable but messy because of the child classes, I am having these clients pass functions into the parent class when they instantiate the main class. The main class creates the methods dynamically and the clients can call the methods like they were there all along. My questions are: is this a sensible thing to do? what would the design pattern be for what I am doing?

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