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  • What makes a bad programming language bad?

    - by sub
    We have all seen things like the typing system of JavaScript (There is a funny post including a truth table somewhere around here). I consider this one of the main things that makes a programming language bad. Other things that spring to mind: Bad Error messages (Either obfuscated so you can't figure out whats wrong, not existing or simply too long and red) The language wasn't planned and just grew uncontrolled in all directions (PHP?) The language encourages bad programm(er/ing) habits such as: Global variables everywhere, bad variable names Inconsistent naming conventions inside the language I can't come up with any more at the moment and would be very happy to read what you think about this. What shouldn't be missing in a language created to be as bad (from the perspectives of the programmer, the company that hires to programmer, the team leader and the customer) as possible? (I ask this because I'm designing a bad, experimental language at the moment)

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  • Sending and receiving async over multiprocessing.Pipe() in Python

    - by dcolish
    I'm having some issues getting the Pipe.send to work in this code. What I would ultimately like to do is send and receive messages to and from the foreign process while its running in a fork. This is eventually going to be integrated into a pexpect loop for talking to interpreter processes. ` from multiprocessing import Process, Pipe def f(conn): cmd = '' if conn.poll(): cmd = conn.recv() i = 1 i += 1 conn.send([42 + i, cmd, 'hello']) if __name__ == '__main__': parent_conn, child_conn = Pipe() p = Process(target=f, args=(child_conn,)) p.start() from pdb import set_trace; set_trace() while parent_conn.poll(): print parent_conn.recv() # prints "[42, None, 'hello']" parent_conn.send('OHHAI') p.join() `

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  • HOWTO and best working installation (MSI) chainer +/ bootstrapper

    - by davidovitz
    Hi, Our product has several products that customer can install created as separate installation packages (MSI). We have a requirement to have single package for the installation that will: Show one UI with progress Allow user to choose which features/packages to install Have ability to constrain one feature to another (e.g removing or adding effect other) Support single elevation (UAC) nice to have ability to auto update (not must) support command line + silent installation the package should be built out of the isolated installations (chain them) raise error / messages for missing prerequisites Support patches over time and major upgrades Today we do almost all of the above using MSI with nested installations which is bad practice and we face too many issues in our solution. i know that there are several bootstrappers out there (m$ generic bootstrapper which i think is not good, BURN is the WIX version which is not mature enough) Do you know of other? that work and tested already ? What is the best method to do (without unification of the MSI into a single MSI)

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  • AJAX call in a continuously loop?

    - by Mestika
    Hi, I want to create some kind of AJAX script or call that continuously will check a MySQL database if any new messages has arrived. When there is a new message in the database, the AJAX script should invoke a kind of alert box or message box. I’m not quite a AJAX expert (yet anyway) and have Googled around to find a solution but I’m having a hard time to figure out where to begin. I imagine that it is kind of the same method that an AJAX chat is using to see if any new chat-message has been send. I’ve also tried to search for AJAX (httpxmlrequest) call in a continuously and infinity loop but still haven’t got a solution yet. I hope there is someone, which can help me with such a AJAX script or maybe nudge me in the right direction. Thanks Sincerely Mestika

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  • Why can't I set a cookie and redirect?

    - by Damian
    I´m having a problem setting a cookie and doing a 302 redirect In chrome the cookie is not being set (I haven't tested safari), in other browsers I was having the same problem until I added Path=/ to the cookie an now it works. This is how the header looks; the status is 302 Found Content-Type text/html; charset=iso-8859-1 Expires Thu, 01 Jan 1970 00:00:00 GMT Set-Cookie alasca-flash=error-Message<Required<error-Name<Required<error-Sex<Required<error-Age<Required<;Path=/ Location /messages/sdf Content-Length 0 Server Jetty(6.1.x) Any idea on why the cookie is not set? Or any workaround? Thanks!

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  • PHP: How to cast object to inherited class?

    - by andreyvlru
    I'd like to inherit PDOStatement class and use it in my website scripts. But I am frustrated how to get required object. PDO::query returns only direct PDOStatement object and looks like there are no other method to create PDOStatement object or inherited class. Initially i thought to move PDOStatement object to constructor of inherit class Something like that: $stmt = PDO -> query("select * from messages"); $messageCollection = new Messaging_Collection($stmt); But how to make instance of PDOStatement to inherited object (Messaging_Collection). It is a big question for me. class Messaging_Collection extends PDOStatement { public function __construct(PDOStatement $stmt) { //there i should to transform $stmt to $this // direct $this = $stmt is not possible // is there other right way? }

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  • Sending mail with delivery receipt ?

    - by Mina Samy
    Hi all I use a function that sends emails to some users. I use the following code to send delivery notification failure messages to the sender email when a message fails to reach the user. I use the following code. System.Web.Mail.MailMessage messagetest = new System.Web.Mail.MailMessage(); messagetest.Headers.Add("Disposition-Notification-To", txtFrom.Text); now I want to enable the sender to receive a Delivered receipt message when the mail arrives successfully. how can this be done ? thanks

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  • Passing URL parameter and a form data together

    - by Fabio
    I have following URL: http://localhost:49970/Messages/Index/9999 And at view "Index" I have a form and I post the form data to the action Index (decored with [HttpPost]) using Jquery, like this: View: <script type="text/javascript"> function getMessages() { var URL = "Index"; $.post( URL, $("form").serialize(), function(data) { $('#tabela').html(data); } ); } </script> <% using (Html.BeginForm()) {%> <%=Html.TextArea("Message") %> <input type="button" id="submit" value="Send" onclick="javascript:getMessages();" /> <% } %> Controller: [HttpPost] public ActionResult Index(FormCollection collection) { //do something... return PartialView("SomePartialView", someModel); } My question: How can I get the parameter "9999" and the form FormCollection in the action Index? PS: Sorry about my english :)

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  • try/catch: errors or exceptions?

    - by Josh
    OK. I may be splitting hairs here, but my code isn't consistent and I'd like to make it so. But before I do, I want to make sure I'm going the right way. In practice this doesn't matter, but this has been bothering me for a while so I figured I'd ask my peers... Every time I use a try... catch statement, in the catch block I always log a message to my internal console. However my log messages are not consistent. They either look like: catch(err) { DFTools.console.log("someMethod caught an error: ",err.message); ... or: catch(ex) { DFTools.console.log("someMethod caught an exception: ",ex.message); ... Obviously the code functions properly either way but it's starting to bother me that I sometimes refer to "errors" and sometimes to "exceptions". Like I said, maybe I'm splitting hairs but which is the proper terminology? "Exception", or "Error"?

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  • Installshield 2009 Premier Basic MSI: Not show a warning message window during uninstall

    - by Samir
    Installshield 2009 Premier Basic MSI: When I uninstall there is a Message Box saying that explorer has to be closed: [Title] My-Product-Name [List] Explorer [radio button 1, Selected by default] Automatically close applications and attempt to restart them after setup is complete [radio button 2] Do not close applications. (A Reboot will be required) [Ok Button] [Cancel Button] If I click OK [with radio button 1 selected] all opened folders are closed !!! How to get rid of this, I don't want any warning message box to show and not close explorer either? More info: I have a dll which is used to show explorer context menu with icons when we right click on any file/folder. This dll is registered during installation and unregistered during uninstall. When we uninstall WinRAR we don't see any such messages, do we?

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  • How do you build a Request-Response service using Asyncore in Python?

    - by Casey
    I have a 3rd-party protocol module (SNMP) that is built on top of asyncore. The asyncore interface is used to process response messages. What is the proper technique to design a client that generate the request-side of the protocol, while the asyncore main loop is running. I can think of two options right now: Use the loop,timeout parameters of asyncore.loop() to allow my client program time to send the appropriate request. Create a client asyncore dispatcher that will be executed in the same asyncore processing loop as the receiver. What is the best option? I'm working on the 2nd solution, cause the protocol API does not give me direct access to the asyncore parameters. Please correct me if I've misunderstood the proper technique for utilizing asyncore.

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  • Creating colour schemes based on an existing scheme

    - by Neil Barnwell
    I have a colour scheme based around yellow, for warning messages on a website. It amounts to a slightly orange bordered box, with a pale yellow fill. The exact colours are: #FED626 (border) #FFF7C0 (fill) I want to know if it's possible to convert this scheme mathematically or algorithmically somehow, to come up with a blue version where the border is the "same amount" of blue as this one is yellow. Is this possible, or do I just "pin the tail on the donkey" on a colour pallet to get roughly the right one? I ask, because I'd quite like to be able to calculate this on the fly, to perhaps implement something in .less. To give you an idea, I tried swopping the red and blue values on those two, and came up with this: #26D6FE (border) #C0F7FF (fill) That wasn't too hard, but think about if I wanted a pink colour scheme... :)

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  • Push notification not working for the production environment

    - by Marcelo
    I have spent a whole day on this already but still didn't go anywhere. When I run my app in the development mode, I can get the push messages I send to myself thru PushMeBaby without a problem. However, when I try to test it in the production environment, I cannot get any push. I re-generated all the certificates and provisioning profiles, used the aps_production_identity.cer as the certificate for push, changed the ssl to gateway.push.apple.com, and did a release build for the app, but still couldn't get it to work. I found that in PushMeBaby, the line result = SSLHandshake(context); returns error -9844. Does it mean that something is wrong with the aps_production_identity.cer file? This is driving me nuts, can somebody offer a little help? Much appreciated!!!

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  • Microsoft SQL Server 2005 - using the modulo operator

    - by cc0
    So I have a silly problem, I have not used much SQL Server before, or any SQL for that matter. I basically have a minor mathematical problem that I need solved, and I thought modulo would be good. I have a number of dates in the database, but I need them be rounded off to the closest [dynamic integer] (could be anything from 0 to 5000000) which will be input as a parameter each time this query is called. So I thought I'd use modulo to find the remainder, then subtract that remainder from the date. If there is a better way, or an integrated function, please let me know! What would be the syntax for that? I've tried a lot of things, but I keep getting error messages like integers/floats/decimals can't be used with the modulo operators. I tried casting to all kinds of numeric datatypes. Any help would be appreciated.

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  • How do I access a tomcat 5.5 installation via localhost running on Virtual PC 2007?

    - by MetroidFan2002
    I have a tomcat installation of 5.5 up and running on a Virtual PC with a fresh XP pro SP3. Launching tomcat gives the standard messages: INFO: Find registry server-registry.xml at classpath resource Apr 12, 2010 11:43:44 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 3576 ms However, I cannot for the life of me connect to http://localhost:8080. I've also tried http://127.0.0.1:8080 with no success. This is on the virtual PC itself that I cannot connect to the server - I haven't bothered to try it on the host machine. Can anyone provide any information on why this may be happening? It's a fresh install of tomcat using Sun's JRE 5.0 (I know, EOL, technical requirements make me have to use 5.0 and not a newer JRE).

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  • fastest (low latency) method for Inter Process Communication between Java and C/C++

    - by Bastien
    Hello, I have a Java app, connecting through TCP socket to a "server" developed in C/C++. both app & server are running on the same machine, a Solaris box (but we're considering migrating to Linux eventually). type of data exchanged is simple messages (login, login ACK, then client asks for something, server replies). each message is around 300 bytes long. Currently we're using Sockets, and all is OK, however I'm looking for a faster way to exchange data (lower latency), using IPC methods. I've been researching the net and came up with references to the following technologies: - shared memory - pipes - queues but I couldn't find proper analysis of their respective performances, neither how to implement them in both JAVA and C/C++ (so that they can talk to each other), except maybe pipes that I could imagine how to do. can anyone comment about performances & feasibility of each method in this context ? any pointer / link to useful implementation information ? thanks for your help

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  • Is it possible to get an NSView to pass rightMouseDown: to the next responder without subclassing?

    - by Benedict Cohen
    I have a view which contains a few subviews: mainView subViewA subViewB SubViewC mainView is an NSView constructed from a nib and is controlled with an NSViewController subclass. The subviews are standard views such as NSTextField and NSImageView and are configured to be non-editable. I want mainView to receive rightMouseDown: even when the event is triggered in one of the subviews. The default implementation of rightMouseDown: in NSResponder passes the event to the next responder, but NSView changes the default behaviour and does not pass it to the next responder. I could subclass all of the subviews but this doesn't seem like a very elegant or maintainable solution. How can I get the subviews to pass rightMouseDown: messages to the next responder without subclassing all of the subviews?

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  • Force exceptions language in English

    - by serhio
    My Visual Studio 2005 is a French one, installed on a French OS. All the exceptions I receive during debug or runtime I obtain also in French. Can I however do something that the exceptions messages be in English? For goggling, discussing etc. I tried the following: Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-US"); throw new NullReferenceException(); obtained Object reference not set to an instance of an object. This is, surely, cool... but, as I work on a French project, I will not hardcode forcing Thread.CurrentUICulture to English. I want the English change to be only on my local machine, and don't change the project properties. Is it possible to set the exceptions language without modifying the code of the application? In VS 2008, set the Tools - Options - Environment - International Settings - Language to "English" wnd throwing the same exception obtain the ex message en French, however:

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  • How to handle a C# console application terminating?

    - by Nick R
    If I have a console application, is there any way I can handle the following: Ctrl-C (I know the answer to this. Using Console.TreatControlCAsInput and Console.CancelKeyPress) Session termination, such as when someone logs off Process exit, such as when someone uses the task manager to close the application. I know that if I was writing a unix application, I would handle various signals to catch the request to close (SIGTERM from memory), but I also know I need to handle these messages pretty quickly and exit before the system does a kill -9 (SIGKILL). But for a C# console application, I'm not sure how to do this.

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  • Jquery display image problem

    - by Sergio
    Hello, I have PHP page where users can upload photos (using Ajax & PHP script). Those uploaded photos (thumbs) are shown after upload in DIV below upload field. Then, after hitting send button I want to clone that DIV at that same page at message board, bellow other messages with or without uploaded photos. When I try to do that with: var pht = $("#photos").clone().addClass('p_pht'); and try to display sent photos bellow sent message like this: $("div#wall").append('<div class=msg>'+ message +'</div><div class=n_pht>'+ pht +'</div>'); I get Jquery error message "[object Object]" in place where the photos should be displaying. What am I doing wrong?

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  • Windows SBS 2003 Remote Desktop Problem

    - by david.healed
    Hi, I used to remote access the SBS 2003 server through RDC and it has been working all the time but now I am unable to connect to the server. Whenever I pressed the "Connect" button on the Remote Desktop Connection dialog, a dialog with messages like "Connecting to: xx.xx.xx.xx" and "Configuring remote session..." appeared and then disappeared quickly, leaving the Remote Desktop Connection dialog there. How to fix the problem? Is the any way to reinstall the Remote Desktop on the server. Thank you.

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  • How to fetch message body and attachments in XML format from Lotus Domino server from linux using ph

    - by too
    Has anybody some information about accessing Lotus Domino server to fetch entire mail contents by http(s) requests from php linux server? The article by Andrei Kouvchinnikov describes well how to fetch message list in notes mail folders; after obtaining session id during login one can for example select top 100 messages by calling: https://your.server.domain/mail_db/mailbox.nsf/($Inbox)?ReadViewEntries&Start=1&Count=100 And this works perfectly. The arises when I am trying to get message contents (0A1DA5EEB7B65277C12576F50055D811 is an example message unique Id): https://your.server.domain/mail_db/mailbox.nsf/($Inbox)/0A1DA5EEB7B65277C12576F50055D811/?OpenDocument Such request in IE shows frameset with data hard to parse, in less common browsers like Opera it informs about unsupported browser. Ideally if it is possible to fetch notes message contents and all attachments by requesting it in the url, has anybody some information what request would it be? Link to Lotus web calls reference would be even more beneficial.

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  • SVN: is it possible to delete a branch that was copied removed etc for good?

    - by dimus
    I have to remove a branch from svn history for good. Normally I would use svnadmin dump /path/to/repo |svndumpfilter --drop-empty-revs --renumber-revs exclude /branches/bad_branch However this branch was not just created, but also moved and then removed and dump script fails to process downstream information with messages like: Invalid copy source path '/branches/bad_branch' So I imagine 2 ways to cope with the problem keep only last few revisions of the history and put current repository as an archive on the web make a dump up to the revision where the 'bad_branch' was created and apply the rest of the changes as a patch, therefore losing history of a few recent commits. Is there a better, cleaner way to deal with this?

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  • Apache is running but there is no page displayed

    - by Michael Ozeryansky
    I am on a Mac OSX and I am using the built in PHP and Apache2. I have been setting up MySQL and finally when I got MySQL working my local site won't display. Do note that I did have the web server running and delivering PHP enabled pages, just no database connection. But my question is not about MySQL. I have changed various settings in the 'http.conf' file, and I have the line: '127.0.0.1 localhost' in my hosts file. I also have other alias' pointing to 127.0.0.1. I have checked everything I could about Apache and I have made sure that any message in the error_log is ok. I currently have my errorLevel set to debug, so I get all the messages. At this point (HOURS of self fixing) I think I need help. What can I provide for someone to figure this out with me. Thanks.

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  • WinForms form freezes

    - by andrew
    On a form (F1) i have a button, from which if i create another form (lets call it F2) and show it there's no problem but i'd like to do something like this Some thread in my app is running a connection and listens for messages from a server. when a message arrives, my main form is registered to get an event that runs a function. From that function i'm trying to create and show the F2 type form (empty, nothing modified in it): it shows it but then it freezes my application. more exactly: public partial class Form1 : Form { public Form1() { InitializeComponent(); ConnectionManagerThread.getResponseListener().MessageReceived += Form1_OnMessageReceived; } private void Form1_OnMessageReceived(object sender, MessageEventArgs e) { Form2 f2 = new Form2(); f2.Show(); } }

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