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  • If url exists Objective-c

    - by HiGuy Smith
    Hey, I have a program that needs to tell if an online image exists, but the only way that I've gotten this to work is by loading the image in a NSData pointer and checking if the pointer exists. - (BOOL)exists { NSString *filePath = @"http://couleeapps.hostei.com/BottomBox.png"; NSURL *url = [NSURL URLWithString:filePath]; NSData *imageData = [NSData dataWithContentsOfURL:url]; if (imageData) { return YES; } return NO; } This has worked for me, but my problem is that I have a very slow connection, and it takes forever to download the image. So my question is: is there a way to check if a image (say "http://couleeapps.hostei.com/BottomBox.png") is available without having to download it? Help is much appreciated HiGuy

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  • Best resource for serious Commodore 64 programming.

    - by postfuturist
    What is the best resource for serious Commodore 64 programming? Assume that serious programming on the Commodore 64 is not done in BASIC V2 that ships with the Commodore 64. I feel like most of the knowledge is tied up in old books and not available on the internet. All that I have found online are either very beginner style introductions to Commodore 64 programming (Hello world), or arcane demo-coder hacks to take advantage of strange parts of the hardware. I haven't found a well-explained list of opcodes, memory locations for system calls, and general mid-level examples and tips. Main portals I have found: lemon64 C-64 Scene Database c64web Actually hosted on a Commodore 64! Tools I have found: cc65 A C compiler that can target Commodore 64.

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  • How to use RadSpell within a Telerik MVC Grid editor popup?

    - by Brian David Berman
    Is it possible to use RadSpell within a Telerik MVC Grid editor popup? I have followed some of the examples online to use RadSpell with ASP.NET MVC (http://www.telerik.com/help/aspnet-ajax/mvc-using-spellchecker.html and http://www.telerik.com/help/aspnet-ajax/spell-client-side-api.html) and I am able to attach multiple text controls to check but the display gets messed up when using Telerik MVC Grid editor popups since it's already in a modal. Sometimes it will randomly pick another div on the page and treats it like it's the main window (it will gray out just a portion of the page and I'll see the RadSpell popup peeking through but it's unusable). It seems like it chooses different places in the DOM to inject the iframe/radwindow for RadSpell as well. Any ideas? I didn't include any code because my implementation is a mess and I'd prefer to start with something simpler, from scratch.

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  • What is the correct way to import and export out of Excel to SQL Server and back?

    - by Vecdid
    Looking for the correct way and control to import and export of out of Microsoft Excel programmatically. I am willing to get a 3rd party control that supports this functionality, or I can create it myself, but looking to get this prioject done fast. The Datasource will be offline. Although when it is online for the upload/download if there is a control that would merge them, that would work also. But best is to remain offline, don't need the support headache. Security is also an issue. SSIS is not available on the shared database server. The website that hosts the asp.net application is not on the same machine as the sql server. Thank you.

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  • Python and App Engine project structure

    - by Joel
    Hello, I am relatively new to python and app engine, and I just finished my first project. It consists of several *.py files (usually py file for every page on the site) and respectively temple files for each py file. In addition, I have one big PY file that has many functions that are common to a lot of pages, in I also declared the classes of db.Model (that is the datastore kinds). My question is what is the convention (if there is one) of arranging these files. If I create a model.py with the datastore classes, should it be in different package? Where should I put my template files and all of the py files that handle every page (should they be in the same directory as the one big common PY file)? I have tried to look for MVC and such implementations online but there are very few. Thanks, Joel

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  • Problem with Regex in .NET (C#)

    - by Craig Bovis
    I'm trying to write a a regex to validate a string to match the following rules. Must start with a-z (case insensitive) Must only contain a-z A-Z 0-9 . - I've put something together based on my limited knowledge and ran it through an online testing tool for a whole bunch of situations and the results were as I had hoped however when I place the pattern into my .NET code it doesn't match correctly. The pattern I am using is, [a-zA-Z][a-zA-Z0-9.\-]* Is this the correct pattern or am I barking up the wrong tree? Some examples of what I'm expecting. craig.bovis - VALID 24craig - INVALID craig@bovis - INVALID craig24 - VALID -craig24 - INVALID craig24.bovis-test - VALID

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  • telerik mvc grid access cell data to enable columns.Command

    - by AZee
    Hi! I can't seem to find a way to reference the value in a column in the grid, in my case it is the StatusId. Based on the cell value in this row, for the StatusId, I need to return a true or false to the method ".Visible(???)". It would be nice to find the answer in the documentation online but I haven't been able to. I find it hard to believe that I would be the first person who ever needed this functionality. I would be most appreciative of any assistance since no one in the telerik forums know. .Columns(columns => { columns.Command(commands => { commands.Edit().ButtonType(ButtonType); commands.Delete().ButtonType(ButtonType); }).Width(90).Visible(???); Thanks! AZee

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  • Metaprograming - self explanatory code - tutorials, articles, books

    - by elena
    Hello everybody, I am looking into improving my programming skils (actually I try to do my best to suck less each year, as our Jeff Atwood put it), so I was thinking into reading stuff about metaprogramming and self explanatory code. I am looking for something like an idiot's guide to this (free books for download, online resources). Also I want more than your average wiki page and also something language agnostic or preferably with Java examples. Do you know of such resources that will allow to efficiently put all of it into prectice (I know experience has a lot to say in all of this but i kind of want to build experience avoiding the flow bad decitions - experience - good decitions)? Thank you!

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  • Architecture of an image hosting site

    - by kamziro
    I'm sure many here are aware of image hosting sites, like imgur, min.us, photobucket etc. Not that I want to develop one, but besides just uploading the file, organising it in some directory somewhere, what architectural considerations are involved in these sites? Especially when there's millions of page views a day (like imgur, I'd imagine) I'm curious about this because it seems that a lot of sites (say, dating websites etc) would be pretty image intensive. Even if it's not for millions of page views, what are some basic architectural requirements of efficient image deliveries online?

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  • Project planning, Note taking tool for developers

    - by iceangel89
    i am looking for a project planning tool that include features like a organizer, todo list, target * deadlines of projects. since i am a developer, it will be good to have a tool that can also do modelling like UML/ERD etc. i am also looking for something that can do note taking. something like a blog with code snipplets - so with syntax highlighting. OneNote etc all does not have code highlighting - the best i can do is use an online syntax highlighter to generate HTML then paste in which is slow. of course its good to have a free/open source tool that has all the features i listed. but its fine to know what paid options are there

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  • GameQuery Collision Detection

    - by Pez Cuckow
    I am having a problem with GameQuery (jQuery) collision detection Tthey just never seem to fire?!? I have checked all the .arrow's exist and the same for the .bot's but it just never seems to call the function I have the below code in my main callback: $(".bot").each(function(){ $(this).collision(".arrow").each(function(){ alert("Test"); }); }); Do you have any idea why this would just simply be doing nothing? The bot walks (has it's x value) moved right over the arrow. Current revision online at http://labs.pezcuckow.com/solveit/game.html (no where near finished) if anyone doesn't mine having a look! Many thanks,

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  • Ping script with loop and save in a txt

    - by matthias
    Hello, i try to make an Ping script with vbs. I need a Script, that ping (no ping limit, the program will run all the time) a computername in the network every 2 seconds and save the results in a txt file. For Example: 06/08/2010 - 13:53:22 | The Computer "..." is online 06/08/2010 - 13:53:24 | The Computer "..." is offline Now i try a little bit: strComputer = "TestPC" Set objPing = GetObject("winmgmts:{impersonationLevel=impersonate}")._ ExecQuery("select * from Win32_PingStatus where address = '"_ & strComputer & "'") For Each objStatus in objPing If IsNull(objStatus.StatusCode) Or objStatus.StatusCode <> 0 Then .......... Next And than i don't know how to make it. (I'm new with vbs :-)) I hope some one can help me. Greeting, matthias

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  • Android and Protocol Buffers

    - by spaceboy2000
    I am writing an Android application that would both store data and communicate with a server using protocol buffers. However, the stock implementation of protocol buffers compiled with the LITE flag (in both the JAR library and the generated .java files) has an overhead of ~30 KB, where the program itself is only ~30 KB. In other words, protocol buffers doubled the program size. Searching online, I found a reference to an Android specific implementation. Unfortunately, there seems to be no documentation for it, and the code generated from the standard .proto file is incompatible with it. Has anyone used it? How do I generate code from a .proto file for this implementation? Are there any other lightweight alternatives?

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  • Pagination For SMS in Android specifically

    - by Priyank
    Hi. I had a pagination related question posted earlier. Here I went through the posted answers and suggested choices and I realized that to implement pagination in an application I could still write db level queries and ensure that I could implement pagination, even if in a crude form. However I have few follow up questions now: I am trying to show SMS from a content provider. Suppose I don't want to use content provider; can I access SMS table in database through my application. Aoes android's security framework allow that? How do people generally handle pagination problems in android, related to content that they are not storing but instead are fetching through content providers. (Android's own or custom) Isn't this a bigger problem. I am surprised to find so little text online about it.

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  • Correct permutation cycle for Verhoeff algorithm

    - by James
    Hello, I'm implementing the Verhoeff algorithm for a check digit scheme, but there seems to be some disagreement in web sources as to which permutation cycle should form the basis of the permutation table. Wikipedia uses: (36)(01589427) while apparently, Numerical Recipies uses a different cycle and this book uses: (0)(14)(23)(56789), quoted from a 1990 article by Winters. It also notes that Verhoeff used the one Wikipedia quotes. Now, my number theory is a little rusty, but the Wikipedia cycle clearly will repeat after the 8th power, while the book one will take 10, despite it saying that s^8=s. Table 2.14(b) has other errors in the 2-cycles, so this is dubious anyway. Unfortunately, I don't have copies of the original articles (and am too tight to pay/disgusted that 40-year old knowledge is still being held to ransom by publishers), nor a copy of Numerical Recipes to check (and am loath to install their paranoia-induced copy protection plug-in to view online). So does any one know which is correct? Are they both correct?

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  • Accessing an asp.net web service with classic asp

    - by thchaver
    My company is considering working with another company on a particular module. Information would be sent back and forth between us through my web service. Thing is, my web service uses ASP.NET, and they use classic ASP. Everything I've found online says (it's a pain, but) they can communicate, but I'm not clear on some details. Specifically, do I have to enable GET and POST on my web service? If I don't have to, but could, would enabling them make the communication significantly easier/better? And finally, GET and POST are disabled by default because of security. What are the security risks involved in enabling them?

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  • Project roles discovery

    - by Lirik
    I have a school project in which we're going to write a financial engine prototype by a group of 4 people. Most of us have never met each other before, so I'm trying to create a questionnaire to help us find the appropriate roles for each team-member. We have the following responsibilities: Database design Programming User interface design Training Documentation / technical writing Network design Project management Business analysis Testing And we have the following roles: Project Manager Developer Tester Business Analyst Our group has people with various experience: a full-time graduate student, an associate director at the CME (Chicago Mercantile Exchange), full-time professionals, etc. Do any of you know of any tools that would help build a questionnaire or do you have a reference to an online questionnaire that can help us identify the most suitable role(s) for each team member?

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  • Is T R O L L O L O G Y a good term for studies of cyber spying, cyber stalking and cyber mobbing ? [closed]

    - by e-mental
    To fight spam and to free speech is necessary for produtive online communication. But this field is plenty of problems and there are many questions not yet put together. The last problem of constituting an interdisciplinary forum and theoretical frame for such studies of cyber spying & stalking & mobbing is the best name for it. But I would like to ask, whether trollology is a good idea - or if You have betters. Thanx a lot.

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  • How can I electronically transfer money to another account using Bank Transfer (BACS)

    - by Mooktakim Ahmed
    I'm working on a project where we collect payments from users using credit/debit/PayPal payments. The service is taking payments from users on behalf of a 3rd party organisation. Once we take the payment, minus fees, we want to transfer the amount to the organisations bank account. For now, what we can do is pay the organisation using Online Banking BACS bank transfer. But I would like to know if there is a way to do this automatically using an API. If we need to somehow register the 3rd parties bank account details before making transfers, this is fine. We just want to automate the whole process, since at the moment the transfer is a manual step. Are there any gateways or APIs I can use for this? In the UK?

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  • In database table design, how does "Virtual Goods" affect table design -- should we create an instan

    - by Jian Lin
    When we design a database table for a DVD rental company, we actually have a movie, which is an abstract idea, and a physical DVD, so for each rental, we have a many-to-many table with fields such as: TransactionID UserID DvdID RentedDate RentalDuration AmountPaid but what about with virtual goods? For example, if we let a user rent a movie online for 3 days, we don't actually have a DVD, so we may have a table: TransactionID UserID MovieID RentedDate RentalDuration AmountPaid should we create a record for each instance of "virtual good"? For example, what if this virtual good (the movie) can be authorized to be watched on 3 devices (with 3 device IDs), then should we then create a virtual good record in the VirtualGoods table, each with a VirtualGoodID and then another table that has VirtualGoodID DeviceID to match up the movie with the DeviceIDs? We can also just use the TransactionID as the VirtualGoodID. Are there circumstances where we may want to create a record to record this "virtual good" in a VirtualGoods table?

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  • Client Side Includes on HTML pages

    - by Roy Rico
    Previously I had thought that there were only ways to get content from external URLs into your page. These 2 ways are use an IFRAME or Javascript to include it into your pages. I've just learned of a new way using the tag. <object type="text/html" frameborder="0" data="http://Server/URL/"></object> I have found some content online that confirms this ability, but it doesn't talk much about features such as Accessibility and SEO of the page. Does anyone have any experience with this? Is there any information available regarding using this method and how it effects Accessibility and SEO?

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  • How to define clock input in Xilinx

    - by seventeen
    Hey, I have almost no experience with Xilinx. I have a group project for a Digital Logic course that is due soon, where my partner, who was supposed to take care of the Xilinx simulations decided to bail on me. So here I am trying to figure it out last minute. I have designed a synchronous counter using a few JK Flip Flops and I need to define the CLK input for the FJKCs. I have drawn up the correct schematic, but I cannot figure out how to define a clock input. Any help appreciated, and yes, this is homework. I just can't find any basic xilinx documentation/tutorials online and I honestly don't have time to learn the whole IDE.

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  • Force jQuery to accept XHTML string as XML?

    - by MidnightLightning
    So, as part of a baseline OpenID implementation in Javascript, I'm fetching a remote page source through AJAX, and looking for the <link rel="openid.server" href="http://www.example.com" /> tag in the head. I'm using the jQuery javascript library for the AJAX request, but am unable to parse out the link tags. Several other online sources talk about using the usual jQuery selectors to grab tags from XML/XHTML sources, but it seems jQuery can only get content from the body of an HTML document, not the head (which is where the link tags are; $(response).find('link') returns null). So, I'd either need to get jQuery to force this document into XML mode or otherwise get at the head tags. Is there a way to force jQuery to parse the response of an AJAX query as XML, when it's in reality XHTML? Or do I need to fall back to regular expressions to get the link tags out?

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  • Need strategy to phone home to a Pyton web app and check licensing information for a commercial Wind

    - by Cornish
    What's a good strategy for building licensing checking into a Windows desktop app using a Python web application? This is a very open ended question because I don't have the slightest clue how to start to build this feature. What I do have is a number of general concerns: I have developed a commercial Windows desktop application and I want to make money from it but I don't want to build the licensing into the app since it's inevitable that someone will create a keygen or a crack, circulate it online and then it's 'game over' for me. So my idea was to create a web application where people could purchase a license key that is generated by the web app and every time the desktop application is started up, it will 'phone home' to the web app to check whether the license is valid and whether it seems to be in use at multiple locations. I'm just not sure how to do this. Would appreciate any general technical strategies and/or pointers to libraries/modules that might be of use.

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  • Error When Creating CLF Function

    - by Julio Miranda
    I've created an C# class that contains 2 static method and I successfully created an Assembly in SQL 2005. When I try to create a table-valued function from that Assembly I get the following error: Msg 6509, Level 16, State 36, Procedure , Line 2 An error occurred while gathering metadata from assembly '' with HRESULT 0x80004005. We have other CLR functions that are that are with in the same dll and seem to work fine. I tried to emulate what the other functions are doing, but I can't seem to get this function to work. All the documentation online doesn't seem to help

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