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Articles indexed Tuesday April 20 2010

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  • Why are configuration arrays acceptible parameters in PHP and Javascript?

    - by RenderIn
    In most other OO languages it would be sacrilege to have each function receive a single associative array of Objects rather than enumerating each in the method signature. Why is it acceptable and commonly used in most popular frameworks for both of these languages to do this? Is there some justification beyond wishing to have concise method signatures? I do see a benefit in this -- that the API could remain unchanged as new, optional parameters are added. But Javascript and PHP already allow for optional parameters in their method signatures. If anything, it seems like Java or another OO language would benefit from this more... and yet I rarely see this pattern there. What gives?

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  • Canvas and HTML5: Supported Browsers?

    - by Paddy
    I am looking at using HTML5 Canvas element for my upcoming project. I want to know what all major browsers (including the versions!, cos i know that the latest builds do support canvas) support the Canvas tag. I don't give a damn about IE. So don't bother reporting IE. :) In this tutorial Drawing shapes - MDC, the quadraticCurveTo section says: quadraticCurveTo(cp1x, cp1y, x, y) // BROKEN in Firefox 1.5 (see work around below) Does that mean that Canvas is supported on Firefox 1.5 and above too?

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  • bluetooth emulators/simulators

    - by scatman
    what are the best bluetooth emulators/simulators? i have a project for the security course, and i chose bluetooth as my topic. so i need to create encryption algorithms using a bluetooth simulator and test them. i have already searched for the best emulaters, and the results were google anroid, and NS2. is there any emulator better? the languages i prefer to program with are c , c++ , and c# java is also not a problem but i prefer any of the above languages.

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  • Returning a collection of objects from a webmethod

    - by Narmatha Balasundaram
    How do I return a collection of objects from a webmethod? And can this collection of objects be of different types - say of these 3 classes, private class ClassA { int A1; int A2; } private class ClassB { int B1; } private class ClassC { int C1; } ClassA objA = new ClassA(...); ClassB objB = new ClassB(...); ClassC objC = new ClassC(...); How can I return the objects, objA, objB and objC from a method?

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  • Interpreting Search Results

    - by Simon
    Hi all, I am tasked with writing a program that, given a search term and the HTML source of a page representing search results of some unknown search engine (it can really be anything, a blog, a shop, Google, eBay, ...), needs to build a data structure of the results containing "what's in the results": a title for earch result, the "details" link, the position within the results etc. It is not known whether the results page contains any of the data at all, and whether there are any search results. The goal is to feed the data structure into another program that extracts meaning. What I am looking for is not BeautifulSoup or a RegExp but rather some clever ideas or algorithms on how to interpret the HTML source. What do I do to find out what part of the page constitutes a single result item? How do I filter the markup noise to extract the important bits? What would you do? Pointers to fields of research covering what I try to to are aly greatly appreciated. Thanks, Simon

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  • Assign pointers in objective C

    - by Tattat
    -(id)setBigObject:(BigObject *)abc{ self.wl = abc; abc.smallObject = self.smallObject; } I have a abc, which is a big Object, when the user pass the bigObject, abc. I assign to my wl value, so , I write "self.wl = abc;", but I want my smallObject assign to the abc's smallObject, so, I do "abc.smallObject = self.smallObject; " So, when I edit the smallObject in self, it will also changed in the abc's also? Am I right?

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  • Resuming git-svn clone

    - by CaptainAwesomePants
    I started cloning a SVN repository using git-svn's clone operation. After about 6 hours of importing (it's a bit repo), my computer went and slept on me. Is there a way to resume the operation without redoing all of the initial work?

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  • Fun with RadCaptcha for ASP.NET AJAX and OCR software

    A friend of mine was evaluating OCR software and finally decided to go with FineReader. I was curious what would happen if we put the RadCaptcha control in. Will the advanced OCR manage to decode it or not? At first he showed me a test run with the RadCaptcha demo description, to get an idea of the basic output:    Naturally, the captured description text was no problem - only a few characters were misread but then corrected with the spellcheck. Next, the real test was performed:    These were only a couple of the results, but there is no need to post the rest of the tests - none of the RadCaptcha images were recognized by the OCR software. Here are the CaptchaImage settings used in the tests: Background Noise Level: Low /default value Line Noise Level: Low /default value Font Warp Factor: Low /Medium is default value...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Blazing fast performance with RadGridView for Silverlight 4, RadDataPager and WCF RIA Services

    In my previous post I’ve used almost 2 million records to the check the grid performance in WPF and I’ve decided to do the same for Silverlight 4 using WCF RIA Services. The grid again is bound completely codelessly using DomainDataSource and RadDataPager: <Grid x:Name="LayoutRoot"> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <riaControls:DomainDataSource Name="orderDomainDataSource" QueryName="GetOrdersAndOrderDetails"> <riaControls:DomainDataSource.DomainContext> <my:NorthwindDomainContext /> </riaControls:DomainDataSource.DomainContext> </riaControls:DomainDataSource> <telerik:RadGridView Name="RadGridView1" IsReadOnly="True" AutoExpandGroups="True" ItemsSource="{Binding Data, ElementName=orderDomainDataSource}" /> <telerik:RadDataPager Grid.Row="1" PageSize="10" Source="{Binding Data, ElementName=orderDomainDataSource}" DisplayMode="All" /> </Grid> And the query again will return join between Northwind Orders and Order_Details: … public IQueryable<OrdersAndOrderDetails> GetOrdersAndOrderDetails() ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How can I have puppet deploy ssh keys for virtual users?

    - by Pheezy
    I am trying to get puppet to assign authorized ssh keys for virtual users but I keep getting the following error: err: Could not retrieve catalog: Could not parse for environment production: Syntax error at 'user'; expected '}' at /etc/puppet/modules/users/manifests/ssh_authorized_keys.pp:9 I believe my configuration are correct (listed below) but is there a syntax error or scoping issue I am missing? I would simply like to assign users to nodes and have those users automagically have their ssh keys installed. Is there maybe a better way to do this and I'm just overthinking it? # /etc/puppet/modules/users/virtual.pp class user::virtual { @user { "user": home => "/home/user", ensure => "present", groups => ["root","wheel"], uid => "8001", password => "SCRAMBLED", comment => "User", shell => "/bin/bash", managehome => "true", } # /etc/puppet/modules/users/manifests/ssh_authorized_keys.pp ssh_authorized_key { "user": ensure => "present", type => "ssh-dss", key => "AAAAB....", user => "user", } # /etc/puppet/modules/users/init.pp import "users.pp" import "ssh_authorized_keys.pp" class user::ops inherits user::virtual { realize( User["user"], ) } # /etc/puppet/manifests/modules.pp import "sudo" import "users" # /etc/puppet/manifests/nodes.pp node basenode { include sudo } node 'testbox' inherits basenode { include user::ops } # /etc/puppet/manifests/site.pp import "modules" import "nodes" # The filebucket option allows for file backups to the server filebucket { main: server => 'puppet' } # Set global defaults - including backing up all files to the main filebucket and adds a global path File { backup => main } Exec { path => "/usr/bin:/usr/sbin/:/bin:/sbin" }

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  • Blogging is Hard

    - by Aaron Lazenby
    Not really. But wi-fi access is limited to common areas in the COLLABORATE 10 conference center here in Las Vegas. So my grand roving iPad blog update plan has been delayed a day while I measured signal strength and searched for a place to sit. Tuesday morning, I accomplished both. Yesterday I shot a nice, quick video of Bahseer Khan about embedded decision support--a part of his Oracle Fusion Applications presentation that I think could do with some additional discussion as we ramp up for Oracle's next-generation applications. I'll post that video here by the end of the day. Later today I'll also be interviewing OAUG president David Ferguson about the prevailing trends at COLLABORATE 10, the addition of Sun (and Sun's user groups) to the Oracle portfolio, and what the next 12 month holds in store for the Oracle user community. Look for that video later today too. If you can't wait for me to dash down to the lobby to make a blog update, don't forget that you can follow Profit at COLLABORATE 10 on Twitter (@OracleProfit). That way, you'll get updates about Billy Cripe's kilt in real time. More to come as this day develops. Next up: virtualization. Also, notes and coverage from yesterday's keynote presentation.

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  • Sharepoint Lists.GetListItems Method rowLimit problem

    - by Linda
    In SharePoint I am using the default view of a list. When I use GetListItems method I can pass into it the following: public XmlNode GetListItems ( string listName, string viewName, XmlNode query, XmlNode viewFields, string rowLimit, XmlNode queryOptions, string webID ) I am passing in "" for the viewName and am passing a rowLimit of 1000. By Default view only returns 100 items. 100 Items are still being returned not 1000. Can you use the rowLimit when not specifying a view? Is it possible to bring back 1000 items using the query instead? I do not really want to use a GUID for the viewName as I would have to look it up for each list and perform a big refactor. Update I am now using the guid of the view and my list still returns the incorrect number of items. I know the guid is being used as I sued an incorrect one and it errord out. Any ideas what could be wrong? The code that is being sent to the service is as follows: <GetListItems xmlns='http://schemas.microsoft.com/sharepoint/soap/'> <listName>Media Outlet</listName> <viewName>{2822F0D9-A905-44B5-8913-34E6497F1AAF}</viewName> <query><Query><Where><Eq><FieldRef Name='Outlet_x0020_Type' /><Value Type='Lookup'></Value></Eq></Where><OrderBy><FieldRef Name='Title' /></OrderBy></Query></query> <ViewFields></ViewFields> <RowLimit>10000</RowLimit> <QueryOptions></QueryOptions> <webID></webID> </GetListItems>

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  • Programming language for fast calculations with big integers

    - by sub
    I'm doing Project Euler problems at the moment and I can solve most of them using my own programming language which uses direct C++ integers (so they are bound to 2^32 on my machine). However, at times there are problems which require me to work with very high numbers, I can't do that with native integers. So I implemented a BigInt library in my language which unfortunately gets extremely slow at times. Is there a programming language suitable for very efficient handling of big numbers? I mean that I want to do the things I could do in other programming languages with it (variables, loops, etc.), but in a faster way. If you have got tips for workarounds of the 2^32 limit in my language/C++/other languages, please tell me too!

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  • ASP.NET MVC: What is the correct way to redirect to pages/actions in MVC?

    - by Mark Redman
    I am fairly new to MVC but not sure exactly which Redirect... replaces the standard redirect used in WebForms ie the standard Response.Redirect() For instance, I need to redirect to other pages in a couple of scenarios: 1) WHen the user logs out (Forms signout in Action) I want to redirect to a login page 2) In a Controller or base Controller event eg Initialze, I want to redirect to another page (AbsoluteRootUrl + Controller + Action) It seems that multiple redirects get called in some cases which causes errors, something to do with the fact a page is already being redirected? How can cancel the current request and just redirect?

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  • How to call a scalar function in a stored procedure

    - by Luke101
    I am wacking y head over the problem with this code. DECLARE @root hierarchyid declare @lastchild hierarchyid SELECT @root = NodeHierarchyID from NodeHierarchy where ID = 1 set @lastchild = getlastchild(@root) it says it does not recognize getlastchild function. What am I doing wrong here

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  • Scroll Wheel in Delphi 7 with CodeRush

    - by GM Mugford
    One casualty of my brief dalliance with Delphi 2010 and subsequent return to using Delphi 7 was my acceptance of the wheel-scrolling behaviour in Delphi 7 with CodeRush installed. The scroll wheel scrolls horizontally in that environment, which I've accepted for all these many years. But it sure was nice to have vertical scrolling while in D2010. Now, I wonder if there is any 'fix' to achieve the 'natural' scroll direction in my environment. Any old CodeRush/D7 users out there with a solution?

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  • php HTTP_REFERER header, how to turn off or leave blank

    - by eco_bach
    Hi I'm using the following simple PHP proxy script but am getting a sporadic message at the destination site. I'm thinking that perhaps it may have something to do with the HTTP_REFERER header, although I'm not explicitly defining it. Can anyone tell me how to explicitly turn off or leave the HTTP_REFERER header blank? Thanks in advance! $url = $_GET['path']; readfile($path);

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  • Joomla Blog article layout order problem.

    - by invig
    I'm having problems with a Joomla install (problem exists in both 1.5.13 and 1.5.15) that won't order articles in a category or section blog layout. I've tried setting the sort order on the layout manually to all the different sort options but it has no effect. Ordering on the front page works fine. Any ideas?

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