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  • Why does java have an interpreter? and not a compiler?

    - by Galaxin
    Iam a newbie to java and was wondering why java have a interpreter and not a compiler? While shifting from c++ to java we come across the differences between these two Compilation process being one of them. 1.A major difference between a compiler and interpreter is that compiler compiles the whole code at once and displays all the errors at a time whereas an interpreter interprets line by line. 2.Also a compiler takes a less time to compile a code when compared to an interpreter. When java was developed for more advanced and easy features and implementations why has it been restricted to a interpreter based on above facts? Is there any special reason why this is so? If yes what is it?

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  • Ideas for Quick Hierarchical Listing - .NET

    - by Robert
    I have a table in SQL Server listing corporate departments and their sections and subsections (3 levels). I would like to create some web-based listing of this, but similar to a TreeList. I was thinking to set up nested Ajax Accordions, but it was taking me way too long to put together. I would even settle for a GridView with non-repeating column values. Is there a way I can implement my idea without it taking me more than an hour or so for a newbie to complete? Any controls in ASP.NET or Ajax I can bind to would be great.

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  • Does Anyone Know Of A Solid Web Example Using ASP.NET MVC1 or MVC2, NHibernate, Fluent NHibernate &

    - by Sara
    I am looking for solid non-console examples of how to use ASP.NET MVC1 or MVC2, NHibernate, Fluent NHibernate & Castle. I looked at Sharp Architecture and its just too much to digest for my newbie mind. I need a clean, clear, concise Step A, Step B, Step C tutorial or a solid example that is a web application and not a console application. I have searched and searched and searched and I have found incomplete examples (examples with just enough information to make me say where does that code go), console applications and no good web application examples. Does anyone know of a COMPLETE web example? If I see another console example, I'm going to scream....

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  • Conventional Approaches for Passing Data to Back-End?

    - by Calvin
    Hi guys, I'm fairly new to web development, so please pardon the painfully newbie question that's about to follow. My computer science class group and I are developing a web application for class, which is built in Python (under Django) and uses jQuery on the front end. It's primarily an AJAX-ified application, and passing data from the backend to the front end is done through AJAX calls to specific URLs which return JSON. This is probably a stupid question, but what's the conventional approach for passing data in the opposite direction? We don't want to reload the page or anything, so is it an AJAX pass going the other way or something? Thanks in advance for your help!

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  • JSP Problem ussing implicit object (session) in a function

    - by user234666
    Can the object of type HttpSession called session be accessed from a function? In a simple jsp page I have a function(see below) defined in the header of the page, and set to an onclick handle of for a button. When I press this button, I'll never see the second alert message. If I do something in the body of the page (like Session ID: <%= session.getId() % ) I have no trouble accessing it. What newbie mistake am I making? function doTest() { alert('Preforming test 122333232'); String sessionId = session.getId(); alert('After access'); if(sessionId == null) { alert('session id is null?'); } Thanks

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  • How do I use functions from a DLL?

    - by Russel
    How do I use functions from a DLL? I'm a total newbie and I don't really understand how to use functions from a DLL file. I'm trying to use MS Visual Studio 2008 (C++). My understanding is that the DLL files will have corresponding header files and as long as I include the header files and call the functions normally in my code, it should work? Is that correct? Then I would just need to have the compiled exe file be able to find the DLL? Please let me know if that is a remotely correct understanding! Thanks! Russel

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  • load search results into a div jquery and rails

    - by odpogn
    In my rails app I have a search bar where users can search other users. Currently when a User submits the search from, they're redirected to a "results" page. I want to load those results in a div on the same page.. I was able to do this with my websites navigation links, but I'm pretty new to jQuery and rails and can't figure this one out... my jQuery corresponding to my navigation links: $(function() { $('#links a').live('click', function() { $('#pages').load(this.href).fadeIn('slow'); return false; }); }); my attempt to do the same with my search function... $(function() { $('#search').submit(function() { $('#pages').load(this.href).fadeIn('slow'); }); }); any help would be much appreciated~ along with some useful jQuery tutorials for a newbie!!

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  • Unable to install mono properly on windows 7 64bit

    - by capeceneveral
    Hi I am a newbie on mono. I need to develop a software with it as a Grad Project. But I am having a problem on installing mono.I will go step by step : I dowloaded “mono-3.2.3-gtksharp-2.12.11-win32-0” from mono-project.com.And ran the installation process. -But I faced a problem on testing on mono command prompt. I tried to follow the instructions on the page (http://mono-project.com/Mono:Windows)but could not create simple c# file. Any help or comment will be appreciated.

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  • Client / Server application for Video BroadCasting on LAN

    - by jbl
    I m much of a newbie to client/server applications and networking.I am currently starting up a project in which we are planning to create an application or something like a website accessible only to clients in that LAN network.We want the server to upload videos so that the clients can view them whenever they want.Also the clients can upload videos.Also we want some kind of registration to provide authentication to avoid bogus videos.Also additional features that can be added on later like comment section,ratings,Groups etc. Basically what we want is to build mini-youtube but with one major difference , we want the application to be LAN based. This is the idea behind the project.But we dont know where to start from as we are new to this stuff and also we have like 1 year to work on the project.Please guide me as to what all softwares i'll be needing to get this working !

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  • MySQL: check whether two fields on a model are always the same?

    - by AP257
    Sorry if this is a duplicate question, I'm a total database newbie and I'm probably using the wrong terminology to search for answers. I have a MySQL table as follows: +------------+---------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +------------+---------------+------+-----+---------+-------+ | placeid | int(11) | NO | PRI | NULL | | | grid | varchar(120) | YES | | NULL | | | vill | varchar(300) | YES | | NULL | | +------------+---------------+------+-----+---------+-------+ I'd like to find out whether 'grid' and 'vill' always occur in the same combinations or not. Maybe it'd be clearer with an example: placeid, grid, vill 1, TM1, Suffolk 2, TM1, Suffolk 3, WA8, Newcastle 4, WA8, Newcastle 5, WA8, York I'd like to construct a query that returns 'WA8' but not 'TM1', because 'WA8' occurs in combination with more than one vill. I would be SO grateful for any help!

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  • Custom accessor for array element

    - by memph1s
    I'm trying to create an accessor for one element from array with specific flag set to true: class EntranceObject < ActiveRecord::Base has_many :subscribers def customer self.subscribers.find(:first, :conditions => {:is_customer => true}) end def customer=(customer_params) self.subscribers << Subscriber.new(:name => customer_params[:name], :apartment => customer_params[:apartment], :phone_number => customer_params[:phone_number], :is_customer => true) end end class Subscriber < ActiveRecord::Base belongs_to :entrance_object validates_presence_of :name, :apartment end How do i need to validate this accessor in order to hightlight missing fields in a view? P.S. I'm newbie in RoR, maybe there is another approach to such work with one element from a collection? Thanks.

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  • Jquery-Different between event.target and this keyword?

    - by Jerry
    Hi all Got a quick and might be an newbie question. What is the different between event.target and this? let's say I have $("test").click(function(e){ $thisEventOb=e.target; $this=this; alert($thisEventObj); alert($this); }); I know the alert will pop different value. Anyone could explain the difference? Thanks a million.

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  • Server-side access to Client Browser's Latitude/Longitude using Django.

    - by ZenGyro
    Hello, So i am writing a little app that compares a user's position against a database on web-based server written using Django and performs some functions with it. Accessing the browser's geolocation data (in supported browsers ) is fairly trivial using JavaScript. But what is the best way to allow the Django server to access the longitude and latitude variables? Is it best to wrap them up as a JSON object and send to the server via POST? Or is there some easier (Geo)Django-based way to access the Navigator.geolocation browser object. Please forgive a newbie a question like this, but my Google-Fuing only seems to find ways to insert variables into JavaScript via template tag, whereas I need it to work the other way! Any advice or code snippets greatly appreciated. Feel free to talk to me like I am an idiot.

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  • jquery toggle+paginate+multiple instances

    - by mark
    Hi, I'm a jquery newbie - wanted to ask what might be the best strategy for achieving what I am after as I think it uses a mix of jquery functions : If list of items exceeds 5 items a 'more' link appears which when toggled will reveal the rest of the items. If items list is 5 or less no 'more' link is shown. Hide button also at bottom of long full revealed list. (perhaps this is toggle+pagination?) And then also that this can be used in multiple instances, as it is for multiple category menu's.(to be used in typical indexhibit websites structure like http://mikeyburton.com/) link 1 link 2 link 3 link 4 link 5 link 6 link 7 link 8 more Any help or links greatly appreciated.

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  • How do I prevent an https response from throwing an AuthenticationException with Fiddler running?

    - by Ichabod Clay
    Relative newbie to C# here :) I'm currently creating a web link scraper and having issues with the responses I'm getting when trying to login to the website via my program. I'm trying to use Fiddler to see if my program is sending the proper data, but my program is throwing an AuthenticationException when trying to get a response from the site with Fiddler running. The requests are being sent over HTTPS and Fiddler's certificate is the cause of the excepting being thrown. My question is, what can I implement into my program to have it disregard the certificate authentication? As far as my program goes, the requests and responses are being handled by HttpWebRequest and HttpWebResponse classes.

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  • WCF returning custom types

    - by Gena Verdel
    Hi. I'm a newbie to WCF, trying to perform relatively simple task. I'm trying to return list of objects read from the database but cannot overcome some really annoying exceptions. The question is very simple? What's wrong with the picture? [ServiceContract] public interface IDBService { [OperationContract] string Ping(string name); [OperationContract] InitBDResult InitBD(); } public InitBDResult InitBD() { _dc = new CentralDC(); InitBDResult result = new InitBDResult(); result.ord = _dc.Orders.First(); return result; } [DataContract] public class InitBDResult { //[DataMember] //public List<Order> Orders { get; set; } [DataMember] public Order ord { get; set; } }

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  • Attaching a jquery function to some textboxes

    - by diver-d
    I am a newbie to jquery and need a little help. I have created the below function which does what I want it to however when I select a textbox every other textbox are automatically selected. How do I change it and pass a parameter from the textbox so only the selected textboxes css changes on focus and blur? <script language="javascript" type="text/javascript"> $(function () { $('.myTextBox').focus(function () { $('.box.textbox').addClass("active"); }).blur(function () { $('.box.textbox').removeClass("active"); }); }); </script>

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  • Getting a NullReferenceException Error when invoking a Select File Dialog Box

    - by codingguy3000
    Hey everyone This is a real newbie question. I have simple app that selects a picture and display's that picture in a PictureBox. I decided to mess with the Opacity Attribute so I added a timer and created this cool effect where the Main Form's Opacity is increased by 20% every 400 miliseconds. The problem is that now when I click the button that invokes the Select File Dialog Box I'm getting a NullReferenceException error. private void tmrClock_Tick(object sender, EventArgs e) { if (ViewerForm.ActiveForm.Opacity != 1) { ActiveForm.Opacity = ActiveForm.Opacity + .20; } } The error message is pointing to the if statement. What am I doing wrong? Thanks

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  • How do I secure password parameters in RESTful web service URIs?

    - by adam
    i'm a newbie to server-side programming, so please forgive me if this gets messy. i've been contracted to create a web service to allow authenticated users to access a database. users have to enter a login and password. been reading and reading about REST vs SOAP, and i thought i'd settled on a RESTful design when i came across this statement: "Data that needs to be secure should not be sent as parameters in URIs." this seems like a major demerit against a RESTful approach. i'm aware that with https the password would be encrypted to prevent man-in-the-middle interception, but that leaves the server logs and client history as possible exposure points. is there a RESTful solution out there for this problem, or do i need to go SOAPy? any advice appreciated.

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  • Accessing XML/PHP with period in tag

    - by LuckyShot
    Hi guys, Quick newbie question here, how do I access totalResults? XML <?xml version="1.0" encoding="UTF-8"?> <OpenSearchDescription> <opensearch:totalResults>1</opensearch:totalResults> <posts> <post> <score>10</score> </post> </posts> </OpenSearchDescription> To access the score I would do this: PHP $xmlObj = simplexml_load_string($theXMLabove); echo $xmlObj->posts->post[0]->score; But none of these work for the totalResults: echo $xmlObj->opensearch:totalResults; echo $xmlObj->opensearch->totalResults; Sorry for asking such a lame question... Documentation on how to traverse XML with PHP is also appreciated :) Thanks!

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  • Simple RIA backend

    - by Jeremy
    I'm creating a prototype for a java web application. Frontend is a Swing-based java applet. Backend should be a type of web-service, that is called by applet. Backend should run inside a servlet container and should have its own security (username/password) database. I know, that Tomcat has its own user database (realm), but the app should have own. Web-services, in turn, carrying out app logic and database access (via Hibernate). I'm a newbie for a web development and I'm getting lost in a huge amount of the java web frameworks. Even just reading 'introduction' and 'getting started' documents takes a lot of time. So I need an advice which framework(s) are suitable for the task and not very complex for a quick start. Thank you

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  • iPhone MVC Question

    - by HM1
    Hi, I'm bit of a newbie and had a basic question regarding adhering to the MVC model in iPhone coding. How do I setup a Model class that holds my data and connect it to different controllers in the following setup: Using Interface Builder, I created a tab controller in which - Tab #1 has a Nav Controller and a hierarchy of View Controllers. - Tab #2 has a View Controller So with what I have now, the View Controller under Tab #1 alloc init's the model class and I know how to pass the model from one ViewController to the next in the Navigation Hierarchy where it can pass the data and/or be updated with new data. Question is how to pass it from Tab #1's View Controller to Tab #2 View Controller as there is no code linking the two??? Thanks in advance, Hiren.

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  • Creation of database in Oracle

    - by macha
    Hello, I am a newbie to Oracle, and I have used MySQL for most of the time. So now for testing scripts, I was just planning to create a database, but from the resources I have found on google, it doesn't look as simple it is maybe in mysql or in sqlserver. I just need to create a database, say "CREATE DATABASE TESTDB";. That is it, but of the resources I have found, it seems I need to create an instance identifier, decide an authentication method, create an initialization file etc. Do I really have to do all this or am I using the wrong resources. I just need to create a database and add a few tables into it, just to check my connection string etc. I need to check if I am able to connect to my web server.

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  • troubles with integration on matlab

    - by user648666
    I'd like some help please I really need to solve this problem. Well before anything thank you for your time... My problem: I have a matrix (826x826 double) and I want to integrate this matrix with respect to a vector of (826x1 double) I don't have the functions of any of this. Is there a command or an algorithm to take the integral of a matrix with respect to a vector? Please I really need help, I'm such a newbie at matlab. Sincerely. George

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  • Regex to validate for Unique Well Identifier in rails

    - by Jasper502
    I am a regex newbie and can't seem to figure this one out. Here is a link to the required string formats: http://earth.gov.bc.ca/royp-bin/phcgi.exe?PH_QKC=DOCUWI&PH_APP=RMSprodApp&PH_HTML=DOCUWI.htm For example: 100041506421W500 = 1+0+{01-16}+{01-36}+{001-129}+{01-36}+W+{1-6}+0+{0-9} I tried this: ^10[0|2-9]{1}0*([1-9]|1[0-6])0*([1-9]|[12][0-9]|3[0-6])0*([1-9][0-9]|1[0-2][0-9])0*([1-9]|[12][0-9]|3[0-6])W[1-6]0[0-9]$ In a regex validator and it sort of works except that 1041506421W500 and 10000000041506421W500 validates. The entire string can only be 16 characters long. I am pretty sure I am missing something obvious here regarding the leading zeros. Tried the NTS format and running into the same sort of problems.

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