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  • PHP inheriting/extending a particular instance of an Object

    - by delta9
    Is there any way to force PHP to extend an existing/particular (and for that matter, already instantiated) instance of an object? This imaginary code should explain what I am wondering: class Base { public $var; function __construct($var){ $this->var = $name; } } class Extender extends Base { function __construct($parent) { parent = $parent; } } $base = new Base('yay!'); $extender = new Extender($base); echo 'Extended base var value: '.$extender->var.'<br/>'; Output (would be): Extended base var value: yay! To be clear, I am wanting to instantiate an object that extends a PARTICULAR INSTANCE of another object, one that has already been instantiated. I am aware that I can pass a reference to an object to another object (via it's constructor function) and then add it as a property of the receiving object, I'm wondering if there is a real way to do this?

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  • Accessing C++ Functions From Text storage

    - by Undawned
    I'm wondering if anyone knows how to accomplish the following: Let's say I have a bunch of data stored in SQL, lets say one of the fields could be called funcName, function name would contain data similar to "myFunction" What I'm wondering is, is there a way I can than in turn extract the function name and actually call that function? There's a few ways I can think of to accomplish this, one is changing funcName to funcId and linking up with an array or similar, but I'm looking for something a bit more dynamic that would allow me to add the data on fly without having to update the actual source code every time I add a call to a new function assuming of course that the function already exists and is accessible via scope location we call it from. Any help would be greatly appreciated.

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  • What should I do or learn to better prepare myself for a co-op position?

    - by Chris Vinz
    I'm currently taking computer systems in a technical institute and I will start looking for a coop job by next September. Since summer vacation is only a few weeks away, I was wondering what I should learn or do to help me land a job and do well in it. I'm pretty sure I'm ahead of most of my classmates since I got around 1.5 years "head start." For now, I'm planning to learn how to use source control (git - for no reason really) and was actually thinking of learning Scheme through SICP and maybe build something nice with it at the end. On the other hand, I'm wondering if it's better to expand on what I know right now and I'm thinking of C++ since I enjoy it a lot more than others like Java. Can I get advice on this? thanks!

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  • Normalized Device Coordinates to window coordinates

    - by okoman
    I just read some stuff about the theory behind 3d graphics. As I understand it, normalized device coordinates (NDC) are coordinates that describe a point in the interval from -1 to 1 on both the horizontal and vertical axis. On the other hand window coordinates describe a point somewhere between (0,0) and (width,height) of the window. So my formula to convert a point from the NDC coordinate system to the window system would be xwin = width + xndc * 0.5 * width ywin = height + ynfv * 0.5 * height The problem now is that in the OpenGL documentation for glViewport there is an other formula: xwin = ( xndc + 1 ) * width * 0.5 + x ywin = ( yndc + 1 ) * height * 0.5 + y Now I'm wondering what I am getting wrong. Especially I'm wondering what the additional "x" and "y" mean. Hope the question isn't too "not programming related", but I thought somehow it is related to graphics programming.

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  • Showing and hidding a DIV

    - by user1741568
    I'm in the process of building a gallery for my public art pieces. I was wondering if there was an easy way to show and hide a div? I only want the concept text to be seen on the first page of the following link: http://www.gerardtonti.com/PresentTense/PresentTense.html Right now I have the concept in a div called "concept" set to absolute positioning. Is there also a way for the text to conform relative to the size of the window like the background image? I've also tried using an iframe and colorbox instead of a div but had no idea how to make the iframe visible only on the first slide as well. Wether using an iframe or div, I was wondering if it was possible to hide either on the frames that follow the first slide. Any help would be greatly appreciated. Thank you, Gerry

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  • MVC Pages that require the user to be logged in

    - by keithjgrant
    I'm working on a little MVC framework and I'm wondering what the "best way" is to structure things so secure pages/controllers always ensure the user is logged in (and thus automatically redirects to a login page--or elsewhere--if not). Obviously, there are a lot of ways to do it, but I'm wondering what solution(s) are the most common or are considered the best practice. Some ideas I had: Explicitly call user->isLoggedIn() at the beginning of your controller action method? (Seems far too easy to forget and leave an important page unsecure on accident) Make your controller extend a secureController that always checks for login in the constructor? Do this check in the model when secure information is requested? (Seems like redundant calls would be made) Something else entirely? Note: I'm working in PHP, though the question is not language-dependent.

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  • Multitrack sound recording - Downloadable control?

    - by Kenny Bones
    Hi, I was just wondering if anyone knows of any free Open Source software wich demonstrates multitrack recording support? I was thinking of something in the lines of this: http://www.soft411.com/company/NCH-Software/MixPad-Audio-Mixer%5Fscreenshot.html I want to include multitrack support in my own software, for personal use and I don't even know where to start to be able to do that. So preferrably a control or something would have been great. I could also be able to pay for something like this, as long as I'd be able to include it in my own VB.NET solution. Any replies are much appreciated! :) Edit: What's with the vote down? I was just wondering if there are any components I can buy and download to use in my own project..

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  • Alternative to singleton for unique resources

    - by user1320881
    I keep reading over and over again that one should avoid using singletons for various reasons. I'm wondering how to correctly handle a situation where a class represents a unique system resource. For example, a AudioOutput class using SDL. Since SDL_OpenAudio can only be open once at a time it makes no sense having more then one object of this type and it seems to me preventing accidentally making more then one object would actually be good. Just wondering what experienced programmers think about this, am i missing another option ?

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  • Are there any test data generator tools which can be used with selenium/Nunit?

    - by Jon
    Hi, I was wondering if there was anything that provides test data for injecting into Nunit tests? I'm sure I came across something recently that does this but I couldn't find it again. Basically the idea is that I could use selenium and Nunit to create new customers within the system automatically. So I could have selenium type in customer names generated from test generator (the < DataGenerator is just an imaginary class): e.g. dim sFirstName as string = < DataGenerator >.GetRandomFirstName() dim sLastName as string = < DataGenerator >.GetRandomLastName() selenium.type("firstname_field",sFirstName) selenium.type("lastname_field",sLastName ) I've already seen SQLDataGenerator from Redgate which has a cmd line wrapper class, but I was wondering if there was anything else.

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  • update portlet without refreshing portal page

    - by mike
    I'm trying to create a simple agena portlet. Now I've developed a basic one using spring-portlet-mvc, it allows you to navigate to the next and previous month with thusly named links that invoke a previousMonth or nextMonth function in my controller. Now the problem I'm having is that this navigation causes my whole page to refresh. Now I was wondering what the best way to fix this was. I've been looking around a bit and it looks like jquery/ajax will do the trick, but since I don't have any experience yet with that technology I was wondering if anyone had any pointers/better ideas to solve my problem.

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  • WeakHashMap iteration and garbage collection

    - by Shamik
    I am using a WeaekHashMap to implement a Cache. I am wondering if I am iterating over the keys of this map, and at the same time garbage collector is actively removing keys from this map, would I receive a ConcurrentModificationException ? I do not think so, because as far as I understand, concurrentmodificationexception happens because of bugs in the application code where the developer forgot to understand that the same map is shared/used by other threads and in this case, it should not happen. But wondering how would JVM handle this when WeakHashMap is not synchronized ?

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  • PHP & RSS Feeds & Special Characters validation Problem.

    - by BUGY
    I keep getting the following validation warning below. And I was wondering that some of my articles deal with special characters and was wondering how should I go about rendering or not rendering special characters in my RSS feeds? Should I use htmlentites or not? If so how? In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendations. line 22, column 35: title should not contain HTML: &amp; PHP code. <title>' . htmlentities(strip_tags($title), ENT_QUOTES, "UTF-8") . '</title>

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  • PHP: Remove blank line before text

    - by Bailey
    Occasionally, my email-to-support-ticket system catches an extra line break before the message itself, thus my messages look like this: " Hello. I have been wondering if y..." What can I use to get rid of that line before the text? It is on random occasion due to email providers and the way they format their emails using mime. I have already tried the trim functions but no luck. (Yes, I also tried ltrim) Once processed it should look like: "Hello. I have been wondering if y..."

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  • refactor this javascript code

    - by nathanvda
    I have two click-events, that are nearly similar, but not quite. I am wondering how to refactor them best: $('.remove_fields.dynamic').live('click', function(e) { var $this = $(this); var after_removal_trigger_node = $this.closest(".nested-fields").parent(); trigger_removal_callback($this); e.preventDefault(); $this.closest(".nested-fields").remove(); trigger_after_removal_callback(after_removal_trigger_node); }); $('.remove_fields.existing').live('click', function(e) { var $this = $(this); var after_removal_trigger_node = $this.closest(".nested-fields").parent(); trigger_removal_callback($this); e.preventDefault(); $this.prev("input[type=hidden]").val("1"); $this.closest(".nested-fields").hide(); trigger_after_removal_callback(after_removal_trigger_node); }); As you can tell there is a fair bit of overlap. I am wondering what the best/nicest way would be to refactor this code.

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  • Good Notification Plugin For Jquery?

    - by chobo2
    Hi I am looking at pines notify(http://pines.sourceforge.net/pnotify/) and it looks good but it seems to have little actual documentation so I am wondering is there anything more established and worked on out there? Like I don't want to spend time trying to figure out how to use pines and then find out it is missing some feature that I needed a few months later that I needed to change to a different plugin. This happened to me with tablesorter 2.0 I was using it then I needed the filtering but theirs kinda sucked so I found datatables what had such a bigger api and developed more. So I am wondering if there is something like datatables(in terms of development and features) just for notifications instead.

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  • Why do we need Web-Api? [closed]

    - by user437973
    I was just wondering what the deal is with Asp.net Web-Api. Why did we need a separate type of controller in order to facilitate varying content types for action results? Why wasn't this capability just baked into the ASP.Net MVC base controller? Anyway, I was just wondering if there was a compelling reason to use both types of controllers within the same project, assuming that the project was being freshly created, or if this project structure was due to an inherent technical limitation. Would it be possible to have ApiControllers fulfill the purpose of an MVC Controller in all cases by just serving HTML when that is the specified accept type? It just seems to me like a lot of unnecessary repetition to have to re-implement the same types of actions using both types of controllers if you want those actions to be available to your web application through the API and through the web interface.

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  • Is an iPhone Call Recorder theoretically possible?

    - by Adam Dempsey
    NOTE: I know neither the iPhone SDK or Objective C, just wondering if possible. I know obviously it would have to be on a Jailbroken device anyway, but it is technically possible for a iPhone call recording application to be made, or is it not possible to hook into the calls or the audio input/output? I know obviously there would be no 'official' way of doing it and certainly not from an App Store application. And I know there are call recording apps which place outgoing calls through their own servers. Just wondering if the reason it doesn't exist yet is just because no-one has coded it or if it's not actually possible?

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