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Articles indexed Sunday March 21 2010

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  • Thrift,.NET,Cassandra - Is this is right combination?

    - by Vadi
    I've been evaluating technology stack for developing a social network based application. Below are the stack I think could well suitable for this application type of application: GUI -- ASP.NET MVC, Flash (Flex) Business Services -- Thrift based services One of the advantage of using Thrift is to solve scaling problems that will come in future when the user base increases rapidly. All the business logic can be exposed as a services using REST,JSON etc., This also allows us to go with C++ or Erlang based services when situation demands. Database -- mySQL, CasSandara mySQL can be used for storing the data which needs to be persisted. Cassandara will be used for storing global identifiers to the persisted data. Since Cassandara is also very good at scaling by introducing more nodes this will leverage Thrift based services as well. And also there is native support between Cassandara and Thrift Cache Server -- Memcached Any requests from Business Services will only talk to Memcached if any non-dirty data is required, otherwise there will be some background jobs that will invalidate the cache from database. The question is: Is the Thrift which is open-sourced one is production-ready? Is it the right stack for services layer to choose when the application (GUI) is primarily gets developed in ASP.NET and DB is mysql? Is there any other caveats that anyone here experienced? One of the main objective behind this stack is to easily scale up with more nodes and also this helps us to use Linux boxes, it will reduce our cost significantly Thoughts please ..

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  • embedding pascal

    - by Sam P
    Is anyone aware of a Pascal interpreter/compiler which is embeddable in C++ (or anything else other than Pascal) applications? I am cloning (for lack of a better word) an application which uses an Object-Pascal compatible scripting language and needs to be script compatible. Am I going to end up writing an interpreter? (!)

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  • Monotouch stringWithFormat using a URL

    - by Pselus
    I'm trying to learn the MapKit with Monotouch and I'm having difficulty figuring out how to search for an address. I finally found this snippet of Objective-C code that might help but it has a line where they use a URL to get a return value and I have no idea how to use this code in C#: NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@&output=csv", [addressField.text stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; If anyone could give me some advice that would be helpful.

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  • Foreign key problem linking tables in phpMyAdmin

    - by alan
    I'm using phpMyAdmin (PHP & MySQL) and I'm having a lot of trouble linking the tables using foreign keys. I'm getting negative values for the field countyId (which is the foriegn key). However, it is linking to my other table and cascading fine. When I go to add data there will be a drop selection for the CountyId and the values will look something like this: " -1 1- " Here is my alter statement: ALTER TABLE Baronies ADD FOREIGN KEY (CountyId) REFERENCES Counties (CountyId) ON DELETE CASCADE

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  • How do I view the location of an swf file that is obfuscated somehow.

    - by atticus
    Specifically, I'm trying to view Elmo's Keyboard-o-rama fullscreen. The original swf file has been moved and obscured. For a toddler, this game really needs to be full screen! The toddler doesn't mind too much and has already lost interest in the game for the day. But it's just driving me crazy. I've tried the usual method of viewing the page info in Firefox to no avail. And before people start trying to delete this for being game specific, I would like to know how to do this for any obfuscated swf location, not just games. Thanks in advance. If anybody knows how to find the appropriate information in tcpdump or wireshark, that could probably help, too. That's what I'm trying to do right now.

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  • Need help with cycle in JS

    - by antiarchitect
    I have such function, that adds a grid of droppables: function AddClassroomDrops(grid, weeks, days, times) { for(week = 1; week <= weeks; week++) { for (day = 1; day <= days; day++) { for (time = 1; time <= times; time++ ) { Droppables.add('container_grid'+ grid + '_week' + week + '_day' + day + '_time' + time, { accept: 'pair', hoverclass : 'hovered_receiver', onDrop: function(pair, receiver) { new Ajax.Request( '/pairs/'+pair.id+'/update_on_drop', { method : 'put', parameters : { classroom : grid, week : week, day : day, time : time, container : receiver.id } } ); } }); } } } } The problem is that params of Ajax.Request (week, day, time) are always equal to weeks + 1, times + 1, days + 1. But they must vary according to the cycle.

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  • What's the best library to do a URL hash/history in JQuery?

    - by alex
    I've been looking around JQuery libraries for the URL hash, but found none that were good. There is the "history plugin", but we all know it's buggy and isn't flexible. I am loading my pages inside a div. I'll need a way to do back/forward along with the url hashing. mydomain.com/#home mydomain.com/#aboutus mydomain.com/#register What's the best library that can handle all of this?

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  • Objective-C: How to replace HTML entities?

    - by arielcamus
    Hi, I'm getting text from Internet and it contains html entities (i.e. &oacute; = ó). I want to show this text into a custom iPhone cell. I've tried to use a UIWebView into my custom cell but I prefer to use a multiline UILabel. The problem is I can't find any way of replacing these HTML entities.

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  • What is the Real Geek "Must do before die" Checklist? [closed]

    - by Osama Gamal
    Hi All, While browsing my favorites, I found that page: http://dailycupoftech.com/2009/05/04/the-geek-must-do-before-you-die-checklist/ I think that some points isn't geeky anymore. Plus, I really wanna know if there are other things that the real geek must do before die? In your opinion, What is the most important things that you -as a geek- MUST do before you die? :)

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  • Invalid Memory Acess for JavaFX ScrollBar

    - by Mike Caron
    I created the following JavaFX script, which when run, generates an Invalid memory access. What is it about javafx.scene.control.ScrollBar that is causing a memory failure? Stage { title: "Scroll View" scene: Scene { content: [ ScrollBar { min: 0 max: 100 value: 0 blockIncrement: 10 vertical: false } ] } resizable: false } I'm using whatever JavaFX (at least 1.2) that comes with NetBeans 6.8: Product Version: NetBeans IDE 6.8 (Build 200912041610) Java: 1.6.0_17; Java HotSpot(TM) 64-Bit Server VM 14.3-b01-101 System: Mac OS X version 10.6.2 running on x86_64; MacRoman; en_US (nb)

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  • ASP.NET MVC Ajax OnBegin/Complete Javascript Problem

    - by mrkcsc
    Hello, I am trying to fire off a javascript method using the OnBegin AjaxOption in an Ajax method. However, when debugging with firebug the callback in unable to find the Javascript method and I do not know why. My code is simple, first I use a basic Ajax method like this: <%= Ajax.ActionLink("Testing", "Testing", new AjaxOptions { OnBegin = "RunThisThing" }) % Then under it I decalre this script. <script type="text/javascript"> function RunThisThing { alert("WORK") } </script> Yet when I try running the page and clicking on the link, Firebug tells me "RunThisThing is not defined". Any idea what I might be doing wrong?

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  • DataAnnotations in ASP.NET MVC 2 - Stop MVC from applying RequiredAttribute to Non-nullable DateTime

    - by jwwishart
    Im trying to create a custom version of the RequiredAttribute to replace the built in one and I've got it working for properties that have strings values, but with properties that are DateTime or integer for example, the default RequiredAttribute seems to be applied automatically (IF the property is not nullable!) My problem is that i want to be able to specify a DateTime property as required using my custom required validator which gets the error message from a resources file (I don't want to have to tell the RequiredAttribute the type of the resource file and the key every time i apply it. That is why I'm making a custom one.) How can i prevent the framework from applying the required attribute to properties of type DateTime and int etc without changing them to nullable. Thanks

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  • Windows XP IIS5 performance across Network

    - by davidsleeps
    Hi, Just wondering whether Windows XP with IIS5 running needs any extra configuration to be suitable as a web server...I'm not considering using this for anything other than a web server on a small network for testing development etc One of the reasons I'm concerned though is that we've deployed an asp.net application to a workstation with Windows XP, and running the application using a browser on the machine (so accessing it through localhost/myApp/page.aspx and not accessing it through the network) runs the application really quickly. If another machine on the LAN accesses the same page (using http://ComputerName/myApp/page.apx) then the whole application runs noticeably slower...yet the computers are connected on a gigabit switch...so I wouldn't have thought network latency or bandwidth could be an issue... Does Windows XP need anything etc enabled or changed or network settings for it to work correctly?

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  • How do I get Windows 7 To Recognize a newly installed RAID 5 volume?

    - by GregH
    I had a previously running Windows 7 (64 bit) system. I added 3 new 1TB Seagate drives that I set up as a RAID 5 volume. I have a Gigabyte GA-P55M-UD2 motherboard. I installed the drives, set up the BIOS and configured the three drives as a RAID volume through the RAID setup utility that was accessed via Ctrl-I while the system was booting. I rebooted the system and could see the drives during the boot sequence. However, when Windows 7 was starting I got an error (quick blue screen) and then Windows tried to repair itself with no success. Do I need to install RAID drivers in Windows? How do I do it if Windows won't boot? Thanks in advance.

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  • PHP application variable... maybe?

    - by James
    I went to a PHP job interview, I was asked to implement a piece of code to detect visitors are bots to crawl thru the website and steal content. So I implemented a few lines of code to detect if the site is being refreshed/visited too quickly/often by using a session variable to store last visit timestamp. I got told that session varaibles can be manupilated by cookies etc, so I am wondering if there is a application variable that I can use to store the timestamp information against visitor IPs eg $_SERVER[REMOTE_ADDR]? I know that I can write the data to a file but it's not very good for a high traffic website. Regards James

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  • c# catch clipboard changes, wont work if form minimized to tray

    - by AnyM
    Hi .. i have a problem using the "Catch Clipboard Events code" found on this link : http://stackoverflow.com/questions/621577/clipboard-event-c/2487582#2487582 the code works great only if the form stays in the foreground, not minimized to tray BUT: if you add a notifyicon and minimize the form to tray and turn the showintaskbar to false (so that you only have an icon in the tray), the program wont catch any clipboard changes anymore ... even if you maximize the form back, it wont work again ...you have to restart the program .. any idea on how to solve this issue !? how can i catch clipboard changes, even if the form is minimized into the tray !? any help is really appreciated ... Thanks

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  • Blittable Value Types

    - by Michael Covelli
    Here is a list of blittable types. It contains Int32 and Int64. But I don't see just plain "int" on the list. How does C# treat the plain "int" type? Does it just get replaced with Int32 or Int64 depending on the system? Or is there a subtle difference? Will using "int" ever cause a performance hit for marshalling?

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  • My method is being recognized within my own program. Newbie mistake probably.

    - by Sergio Tapia
    Here's my code: sentenceToTranslate = raw_input("Please write in the sentence you want to translate: ") words = sentenceToTranslate.split(" ") for word in words: if isVowel(word[0]): print "TEST" def isVowel(letter): if letter.lower() == "a" or letter.lower() == "e" or letter.lower() == "i" or letter.lower() == "o" or letter.lower() == "u": return True else: return False The error I get is: NameError: name 'isVowel' is not defined What am I doing wrong?

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