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  • antlr: is there a simple example ?

    - by Eli
    I'd like to get started with antlr, but after spending a few hours reviewing the examples at the antlr.org site, I still cant get a clear understanding of the grammar to java process. is there some simple example? something like a four operations calculator implemented with antlr going through the parser definition and all the way to the java source code?

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  • how to implement k-means for simple grouping in java

    - by thandar
    Hi all, I would like to know simple k-means algorithm in java. I want to use k-means only for grouping one dimensional array not multi. For example, before grouping the array consists of 2,4,7,5,12,34,18,25 if we want four group then we got group 1: 2,4,5 group 2: 7,12 group 3: 18,25 group 4: 34

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  • ASP.NET custom routes for simple requirements management tool

    - by Andrew
    I am implementing a very simple requirements management tool. I want the URLs to look like this: Shows home page for "Project One": http://projectmanager/Project/Project%20One Shows a list of requirements being worked on for "Project One" http://projectmanager/Project/Project%20One/Requirements Shows requirement 1 for "Project One" http://projectmanager/Project/Project%20One/Requirement/1 How could I set up routes so that http://projectmanager/Project/Project%20One is handled by the project controller http://projectmanager/Project/Project%20One/Requirements and http://projectmanager/Project/Project%20One/Requirements/1 is handled by the requirements controller. Is it even possible?

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  • Easiest (simple) explanation of "prototype" in JavaScript?

    - by alexeypro
    Hello, Can somebody give me a resource (or just explanation? :-) of what "prototype" is and how it works in Javascript. May be comparison with something in Java? (not really necessary). But it should be as simple/easy as possible so inexperienced person just learning Javascript would understand (need to explain this to jr designer who is proficient with CSS/HTML, but not with Javascript). Thank you!

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  • Creating simple waveforms with CoreAudio

    - by Koning Baard
    I am new to CoreAudio, and I would like to output a simple sine wave and square wave with a given frequency and amplitude through the speakers using CA. I don't want to use sound files as I want to synthesize the sound. What do I need to do this? And can you give me an example or tutorial? Thanks.

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  • iPad App: Simple Launch View -> SplitViewController

    - by Aurimas
    Hello, I want to create an iPad app that would have a simple view at launch with buttons to different components of the app. Each button then could open up a splitviewcontroller type views. (Interface similar to WebMD: http://itunes.apple.com/us/app/webmd-for-ipad/id373185673?mt=8) I was reading online that Apple does not allow splitviewcontroller inside other controllers (like NavigationController). How do I solve this? Thanks!

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  • Php/Mysql Simple survey

    - by creativz
    I want to make a little php poll. The script should ask the users a question they can only answer by numbers from 0-999. After pressing the submit button the data should be stored into mysql. So I just want to know how much users choosed the same number (in percent). It's a simple poll but I don't want any output to be shown.

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  • Java - simple division in Java ---> bug/feature?!

    - by msr
    Hello, Im astonished. Im trying this simple calculation in a Java application: System.out.println("b=" + (1 - 7/10)); Obviously Im wainting for "b=0.3" in the output but here's what I get: b=1 What?! Why this happens? If I make: System.out.println("b=" + (1-0.7)); I get the right result which is "b=0.3". What's going wrong here? Thanks!

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  • Simple java regular expression replace question.

    - by Yang
    I have a simple xml file and I want to remove everything before the first tag. ..... item1 .... The following java code is not working: String cleanxml = rawxml.replace("^[\\s\\S]+<item>", ""); What is the correct way to do this? And how do I address the non-greedy issue? Sorry I'm a C# programmer.

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  • JSON Web Service over simple HTTP GET/POST

    - by whoi
    Hi; Can you suggest a way or a framework or etc. for JEE in order to make simple HTTP GET/POST calls to some web services like in SOAP web services but transport format must be JSON; not XML and there must not be any wrapper around(may be some vey lightweight header) like SOAP etc. In short, my purpose is to serve web services using JSON and HTTP Get/Post in a maximum possible lightweight solution. Thanks

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  • Simple question about MKMapView and the iPhone

    - by gravityone
    Basically I want to show the users location plus a list of selected location on a map. It can even have the standard iphone annotations. But, I have no idea of the general steps I would take to achieve this. Would I use MKMapView, or Core Location, or both? Could someone give me a simple outline of steps to take, or a link to a good tutorial or sample code. Thanks

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  • PHP Libraries for Amazon Simple Notification Service

    - by webdestroya
    I wanted to start using the Amazon Simple Notification Service (http://aws.amazon.com/sns/), but I have not found any PHP libraries that I can use to access the service. I would rather not create my own library, I wanted to see if anybody has used any PHP libraries for the SNS service, and if they would recommend any.

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  • Is there a simple way to emulate friendship in php 5.3

    - by Itay Moav
    I need some classes to befriend other classes in my system. Lack of this feature made me publicize some methods which shouldn't be public. The consequences of that are that members of my team implement code in a bad and ugly way which causes a mess. Is there a way to define a friendship in php 5.3? (I am aware of http://bugs.php.net/bug.php?id=34044 You might want to vote there if there is no simple solution).

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  • Simple ASP.NET Database Query

    - by Steven
    I have loaded my database with one table under "Data Connections" in the "Server Explorer" pane. What is the standard / best-practices way to handle a simple query in a VB ASPX page? My left <div> would be a set of form elements to filter rows, and when the button is clicked, the main <div> would show the columns I want for the rows returned. Note: Answers in C# are okay too, I'll just translate.

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  • Java - simple division in Java ---> bug?!

    - by msr
    Hello, Im astonished. Im trying this simple calculation in a Java application: System.out.println("b=" + (1 - 7/10)); Obviously Im wainting for "b=0.3" in the output but here's what I get: b=1 What?! Why this happens? If I make: System.out.println("b=" + (1-0.7)); I get the right result which is "b=0.3". What's going wrong here? Thanks!

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  • Simple XML over http web service

    - by Mark
    I have a simple html service, developed in django. You enter your name - it posts this, and returns a value (male/female). I need to ofer this as a web service. I have no idea where to start. I want to accept a xml request, and provide an xml response - thats it. Can anyone give ma any pointers - Googling it is difficult when you dont know what your searching for.

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  • a simple smtp server

    - by fixxxer
    Could you please suggest a simple SMTP server with the very basic APIs(by very basic I mean, to read,write,delete email) that could be run on a linux box? I just need to convert the crux of the email into XML format and FTP it to another machine.

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  • javascript simple object creation test: opera leaks?

    - by joe
    Hi, I am trying to figure out certain memory leak conditions in javascript on a few browsers. Currently I'm only testing FF 3.6, Opera 10.10, and Safari 4.0.3. I've started with a fairly simple test, and can confirm no memory leaks in Firefox and Safari. But Opera just takes memory and never gives it back. What gives? Here's the test: <html> <head> <script type="text/javascript"> window.onload = init; //window.onunload = cleanup; var a=[]; function init() { var d = document.createElement('div'); d.innerHTML = "page loading..."; document.body.appendChild(d); for (var i=0; i<400000; i++) { a[i] = new Obj("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"); } d.innerHTML = "PAGE LOADED"; } function cleanup() { for (var i=0; i<400000; i++) { a[i] = null; } } function Obj(msg) { this.msg=msg; } </script> </head> <body> </body> </html> I shouldn't need the cleanup() call on window.unload, but tried that also. No luck. As you can see this is simple JS, no circular DOM links, no closures. I monitor the memory usage using 'top' on Mac 10.4.11. Memory usage spikes up on page load, as expected. In FF and Safari reloading the page does not use any further memory, and all memory is returned when the window (tab) is closed. In Opera, memory spikes on load, and seems to also spike further on each reload (but not always...). But regardless of reload, memory never goes back down below the initial load spike. I had hoped this was a no-brainer test that all browsers would pass, so I could move on to more "interesting" conditions. Am I doing something wrong here? Or is this a known Opera issue? Thanks! -joe

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