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  • Gracefully trap error on dos start cmd

    - by diehlted
    On a cmd prompt or bat file, I issue the following: start textpad myfile.txt and it works fine. If the program textpad does not exist on the computer, then an error sound and a popup occurs which the OK button must be pushed. I desire to trap this error so that I could do something like start textpad myfile.txt || start notepad myfile.txt where the || implies that if the start of textpad is not successful, then the start of notepad should occur. HOWEVER, I still get the error sound and requirement of hitting OK. My intent is to avoid the sound and the requirement of any user intervention. I have also tried the following bat approach below, to no avail. start textpad if not %ERRORLEVEL% == 0 GOTO END start notepad :END Any help would be great. thanks ted

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  • url rewriting + Asp.Net Login Form = Death

    - by xor88
    Hi, on our site we do url rewriting to generate massive amounts of database generated pages. on every page, there is a Login control for users. like this: Internal aspx page: /DB.aspx?id=123 User visible url: /ABC/123.aspx, /ABC/456.aspx ... (url rewritten) unfortunately, the tag on each page has an action attribute of "DB.aspx?id=123". when the user clicks the button the browser is posting to /ABC/DB.aspx?id=123 which of course does not exist. solutions i tried: 1. change the action attribute by subclassing HtmlForm. this destroys the all other forms on the site. 2. remove the action attribute (so that the browser is always posting to the same url). this works on the rewritten pages but on "/" (the default.aspx in the root dir) i get a message that the verb post is not allowed on "/" (iis 6 and i have no control over mappings) anybody?

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  • A PHP object server for business logic

    - by Matthieu
    I wonder if such a thing is possible or even exist : In the MVC pattern, I would like to have the Model part to be persistant in memory, instead of reloading my instances at each execution. So I want only the Controller and View part to be executed. Is there any solution of server that would provide PHP objects (just like a Mysql server provides data records), and that keeps these objects in memory ? A problem would be also : how to have a constructed query to get objects ? Maybe PHP Linq ?

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  • What is it about Fibonacci numbers?

    - by Ian Bishop
    Fibonacci numbers have become a popular introduction to recursion for Computer Science students and there's a strong argument that they persist within nature. For these reasons, many of us are familiar with them. They also exist within Computer Science elsewhere too; in surprisingly efficient data structures and algorithms based upon the sequence. There are two main examples that come to mind: Fibonacci heaps which have better amortized running time than binomial heaps. Fibonacci search which shares O(log N) running time with binary search on an ordered array. Is there some special property of these numbers that gives them an advantage over other numerical sequences? Is it a density quality? What other possible applications could they have? It seems strange to me as there are many natural number sequences that occur in other recursive problems, but I've never seen a Catalan heap.

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  • Non-string role names in ASP.NET MVC?

    - by MikeWyatt
    ASP.NET MVC has good support for role-based security, but the usage of strings as role names is maddening, simply because they cannot be strongly-typed as enumerations. For example, I have an "Admin" role in my app. The "Admin" string will now exist in the Authorize attribute of my action, in my master page (for hiding a tab), in my database (for defining the roles available to each user), and any other place in my code or view files where I need to perform special logic for admin or non-admin users. Is there a better solution, short of writing my own authorization attribute and filter, that would perhaps deal with a collection of enumeration values?

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  • What benefits can Java developer have from moving to a *NIX platform?

    - by dave-keiture
    Hi everyone, A friend of mine is a Java developer, who's using *NIX for ages. He claims that *NIX is for real Java geeks, whereas WIN is for dummies (and I'm one of them, according to him) and girls. When I ask him to argue his position, and explain, what's so good for Java developer on *NIX, he starts talking about console, wget, curl and grep. But sorry, wget and curl analogues exist for the WIN platform as well. As for the console - I'm using FAR Commander, and have access to the command line when I need. Moreover, even if I decide moving to *NIX, I will certainly use Netbeans or Eclipse on it, so there will be no big difference. Guys, who use Java on *NIX, could you please give me some real killer examples, when *NIX (any util or technique) dramatically increases Java development productivity (in the way the hints are given in "The Pragmatic Programmer"), or, which is also important, gives more fun from the process. Thanks in advance!

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  • How is a h264 idea bitstream organized? / header start codes

    - by Wolax
    I was trying to learn a bit about h264 by looking at the bitstream of a video file with a hex editor. I found here the start codes for a video object planes (0x000001b6) and for i-frames (0x000001b600). But I can't find many of those bytes in video files. Most of the time those start codes appear at the beginning of a file with only a few bites in between. I expected them to show up very regularly, in equal distance all over the file!? Is is even ok to look at a file with a hex editor this way? What other start codes exist and how is a h264 file organised?

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  • Is there a high-level gestures library for iPhone development?

    - by n8gray
    The iPhone platform has a number of common gesture idioms. For example, there are taps, pinches, and swipes, each with varying number of fingers. But when you're developing an app, it's up to you to implement these things based on low-level information about the number and locations of touches. It seems like this is a prime candidate for a library. You would register a delegate, set some parameters like multi-tap interval and swipe threshold, and get calls like swipeStarted/Ended, pinchStarted/Ended, multiTap, etc. Does such a library exist?

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  • How to check PHP filecode syntax in PHP?

    - by Tower
    Hi, I am in a need of running the PHP parser for PHP code inside PHP. I am on Windows, and I have tried system("C:\\Program Files (x86)\\PHP\\php.exe -l \"C:/Program Files (x86)/Apache/htdocs/a.php\"", $output); var_dump($output); without luck. The parameter -l should check for correct PHP syntax, and throw errors if some problems exist. Basically, I want to do something similar to this picture: That is, to be able to detect errors in code.

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  • Clean install of IIS 6 on Windows Server 2003 ignoring 'web.config'?

    - by Vario
    Hi, Any help with this would be really appreciated! As the title suggests, I'm running a brand new install of Windows Server 2003 and IIS 6 and I'm basically attempting to mirror a live web server onto a new internal development server, which runs the same setup. It's an ASP.NET site that relies heavily on URL rewriting (using Intelligencia). ASP.NET is set to run on v2.0.50727 on both servers. I've tried intentionally introduce syntax errors into the web.config and it just appears to be ignoring them completely, so given IIS 6 doesn't read the web.config, the rest of the site doesn't work at all (I get a 404 error, as a 'Default.aspx' doesn't exist since the web.config handles the default page rewriting). Having looked at the Application Mapping, '.config' files are set to use the default 'c:\windows\microsoft.net\framework\v2.0.50727\aspnet_isapi.dll' which exists. Is there anything else I may be missing? Thanks in advance.

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  • C# Event Handlers automatically created by WinForms Designer

    - by RHaguiuda
    Just moved from VB.NET to C#. In VB to connect and Event Handler to a Sub we use the Handles clause. From what it seems, this do not exist in C#. After creating a simple application with a button I realize that Window Forms Designer automatically created an EventHandler to my button1_Click function (after I double clicked it), in Form1.Designer.cs with this code: this.button1.Click += new System.EventHandler(this.button1_Click); But, in VB, the WinForms Designer create the Handles clause in my class, in the function header. So, C# create the default EventHandler in designer file, while VB creates in main class with control resides. Is this correct? Am I missing something here?

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  • Need help in SQL and Sequel involving inner join and where/filter

    - by mhd
    Need help transfer sql to sequel: SQL: SELECT table_t.curr_id FROM table_t INNER JOIN table_c ON table_c.curr_id = table_t.curr_id INNER JOIN table_b ON table_b.bic = table_t.bic WHERE table_c.alpha_id = 'XXX' AND table_b.name='Foo'; I'm stuck in the sequel, I don't know how to filter, so far like this: cid= table_t.select(:curr_id). join(:table_c, :curr_id=>:curr_id). join(:table_b, :bic=>:bic). filter( ????? ) Answer with better idiom than above is appreciated as well.Tnx. UPDATE: I have to modify a little to make it works cid = DB[:table_t].select(:table_t__curr_id). join(:table_c, :curr_id=>:curr_id). join(:table_b, :bic=>:table_t__bic). #add table_t or else ERROR: column table_c.bic does not exist filter(:table_c__alpha_id => 'XXX', :table_b__name => 'Foo') without filter, cid = DB[:table_t].select(:table_t__curr_id). join(:table_c, :curr_id=>:curr_id, :alpha_id=>'XXX'). join(:table_b, :bic=>:table_t__bic, :name=>'Foo') btw I use pgsql 9.0

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  • How to set the bounce address using System.Net.Mail?

    - by Anthony
    I'm trying to implement the Variable envelope return path (VERP) method to manage email addresses (ie when an email I send bounces back I want it to be sent to a specific email address so that I can update my database to avoid sending emails to that email address in the future). According to this article it is possible to specify the email address a bounce email is sent to. How do you do this in .Net? For example say I ([email protected]) want to send an email to you ([email protected]). If [email protected] doesn't exist anymore I want yourserver to send the bounce email to [email protected]). This way when I receive this bounced email I know that [email protected] is not a valid email address anymore and I can update my database accordingly. In this example, the bounce address would be: [email protected] How do you specify it using System.Net.Mail?

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  • How to store static content across branches in a single location in version control

    - by Shravan
    [Just a random thought] I have a pdf doc that is downloaded when the user clicks on 'help' on my website. Now, this is a pretty huge document and is saved in version control (SVN) and is thus copied for all branches that exist in SVN. This is static content and something that developers are not working on, and does not change often. Is there a more efficient way to store it (that would not hamper local deployments) that would make SVN checkouts and updates relatively faster. I know the benefit we get is not huge, this is something that came to my head none the less.

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  • iPhone check for a constant at runtime in universal app

    - by joshue
    I'm making a universal iPad/iPhone app which can use the iPad's VGA out connector to mirror the content of the app on an external screen. However, the iPhone does not have this functionality. given the following code, [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(screenInfoNotificationReceieved:) name:UIScreenDidConnectNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(screenInfoNotificationReceieved:) name:UIScreenDidDisconnectNotification object:nil]; I get this error on the phone at launch (works fine in ipad) "dyld: Symbol not found: _UIScreenDidConnectNotification" presumably because UIScreenDidConnectNotification doesnt' exist yet in 3.13. How do I check for this at runtime?

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  • Unable to open a file for writing

    - by asdasdas
    I am trying to write to a file. I do a file_exists check on it before I do fopen and it returns true (the file does exist). However, the file fails this code and gives me the error every time: $handle = fopen($filename, 'w'); if($handle) { flock($handle, LOCK_EX); fwrite($handle, $contents); } else { echo 'ERROR: Unable to open the file for writing.',PHP_EOL; exit(); } flock($handle, LOCK_UN); fclose($handle); Is there a way I can get more specific error details as to why this file does not let me open it for writing? I know that the filename is legit, but for some reason it just wont let me write to it. I do have write permissions, I was able to write and write over another file.

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  • windows service

    - by zubin71
    I need to write a windows service which executes an application after a certain amount of time. I have checked out the code in MSDN and found an example in which the System.ServiceProcess.ServiceBase class is sub-classed. I did the following. created a new C# console application copied the code from the MSDN example Run I get the following error The type or namespace name 'ServiceProcess' does not exist in the namespace 'System'(are you missing an assembly reference?) As i had copied the example from MSDN, i have no idea why the code still does not work. This is my first experience writing services and i`d love some guidance. thnkx!

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  • Does Google provide any Android tutorials that teach how to implement a Service?

    - by Bub
    I apologize in advance for the "newbie" nature of this question. Here is my predicament: I'm brand new to android and developing in general. I'm using android's SDK with eclipse Galileo. I've followed several tutorials to create different layouts. I've even learned recently how to use radio buttons and verify which ones were selected. Now I need to create a service that downloads and updates an xml file within the application. I've tried to locate a simple tutorial for services on Google's developer site but so far, so bad. If they exist could somebody point me in the right direction? On the other hand, I've been told Google's tutorials are a little out dated. Is that true? If so, are there any other tutorials that would hand-hold (and possibly over-explain) how to use a service to a true newbie for free (like google)? Any suggestions would be appreciated.

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  • Using a set of numbers inside a database without creating a temporary table

    - by Zizzencs
    I have a set of numbers and a table in a database with the id (primary key) and text (not null) columns. I would like to create a query that returns all the numbers in the set and the associated text from the table. Unfortunately not all numbers exist in the database's id column, so this won't work: select id, text from table where id in (<set of numbers>) For the non-existing ids the best would be to return null as the text from the query. Is there a way to produce the desired output without first creating a temporary table from the set inside the database? The database engine in use is a Microsoft SQL Server 2008 SP1 but I'd be interested in any solution with any database engine.

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  • .NET Deployment of Interface/Classes for Command Pattern Question

    - by Jonno
    In theory I would like to produce 2 projects: 1) Asp.net (Sever A) 2) DAL running (Server B) I would like to utilise command objects to comunicate with the DAL. ASP.net instantiates a command class e.g. CmdGetAllUsers which impliments IMyCommand interface and sends it to the DAL (using ASMX or WCF). My question is: Would the class definition of CmdGetAllUsers need to exist on the DAL server? Or would having the interface definition be enough? My goal is to reduce the need to redeploy the DAL code, and have it as a fairly simple pass-through layer. Many thanks for your time.

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  • Are mathamatical Algorithms protected by copyright

    - by analogy
    I wish to implement an algorithm which i read in a journal paper in my software (commercial). I want to know if this is allowed or not. The algorithm in question is described in http://arxiv.org/abs/0709.2938 It is a very simple algorithm and a number of implementations exist in python (http://igraph.sourceforge.net/) and java. One of them is in gpl another which i got from a different researcher and had no license attached. There are significant differences in two implementations, e.g. second one uses threads and multiple cores. It is possible to rewrite/ (not translate) the algorithm. So can I use it in my software or on a server for commercial purpose. Thanks

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  • routing map a action controller

    - by Luca Romagnoli
    Hi i have a controller named "places" with some action like "view", "new", "create" When a user try to launch mysite.com/places i want that is execute the action show of a another controller called "cores" so in the routes.rb file i've put this: map.connect '/:id/show', :controller => "cores", :action => "show" But it doesn't work. I receive this error: Processing PlacesController#show (for 127.0.0.1 at 2010-04-16 00:52:07) [GET] ActionController::UnknownAction (No action responded to show. Actions: admin_denied, admin_required, auto_complete_for_location, auto_complete_for_name, change_location, create, create_facebook_session, create_facebook_session_with_secret, edit, exist, facebook_params, facebook_session, facebook_session_expired, facebook_session_parameters, get_form, is_admin?, new, one_or_true, redirect_to, render_publisher_error, render_publisher_interface, render_publisher_response, set_facebook_session, top_redirect_to, update, wants_interface?, and zero_or_false): How can i do to map that action in another controller? thanks

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  • Linq issue retrieving single value from mssql

    - by Anicho
    Hey Guys, having an issue with linq, I am basically doing the following but it is saying it is "UserProfile does not contain definition for Username" in the current context where I wrote "u.Username" but it does exist I have added UserProfile table to MyDbml.dbml and if I connect to another table it works fine. TiamoDataContext context = new TiamoDataContext(); var user = (from u in context.UserProfiles where u.Username == UsernameLabel select u).FirstOrDefault(); I am flustered by what small detail I have missed out to get this to work, anyone have any clues it would be much appreciation.

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  • How to see what objects lie in which generation in YourKit?

    - by prams
    I am using YourKit (11.0) to try to profile my j2ee app. The app uses java 6 and running on 64-bit linux (centos). I was told that YourKit possibly tells us which objects exist in which generation (eden, old, etc) at any given point of time. On a side note, I am trying to chase a problem where memory usage keeps increasing until a major collection happens (every 4 hrs) and I am suspicious about few particular objects, so I am interested to know where those objects lie at different times. Fortunately I know lot of memory is being consumed in one particular area of code (so other objects are possibly directly being put into the old gen), but don't exactly know how much of that memory is being put into eden space, how much is being collected by the minor collections, etc. Thanks.

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  • Is there a "Language-Aware" diff?

    - by JS
    (Appologies for the poor title. I'm open to suggestions for a better one. "Language-gnostic", perhaps?) Does there exist a diff utility (preferably *nix-based) that will diff files based on how a (selectable) language compiler would view the code? For example, to a Python compiler, these two 'graphs are identical: # The quick brown fox jumped vs: # The quick brown # fox jumped Telling most diffs (at least the one's I'm familiar with) to ignore spaces and linebreaks still causes them to flag a difference due to the extra '#'. "Language-sensitivity" would sure help to cut down on the "noise". Ideally, it would work in xemacs....(<-- probably pushing my luck? :-)

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