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• IM (Instant Messaging) increase or decrease developer's productivity?

  - by GRGodoi

  In my team I have some developers that always have two or three IM windows open. The majority of these windows are not related with the project where they are nor with asking or offering programming help. I also use IM and, off course, some of my "talks" are not related with the job. But I feel that when I am using IM my productivity drops. I mean, there is more "mental" work to change the scope between the task I am doing and the conversation every time a new message arrive. Do you face the same situation? Is there some good practices to avoid this (excluding, off course, stopping using IM)?

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• Brute force characters into a textbox in c#

  - by Fred Dunly

  Hey everyone, I am VERY new to programming and the only language I know is C# So I will have to stick with that... I want to make a program that "test passwords" to see how long they would take to break with a basic brute force attack. So what I did was make 2 text boxes. (textbox1 and textbox2) and wrote the program so if the text boxes had the input, a "correct password" label would appear, but i want to write the program so that textbox2 will run a brute force algorithm in it, and when it comes across the correct password, it will stop. I REALLY need help, and if you could just post my attached code with the correct additives in it that would be great. The program so far is extremely simple, but I am very new to this, so. Thanks in advance. private void textBox2_TextChanged(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { if (textBox2.Text == textBox1.Text) { label1.Text = "Password Correct"; } else { label1.Text = "Password Wrong"; } } private void label1_Click(object sender, EventArgs e) { } } } `

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• How do I create sub-applications in Django?

  - by jamida

  I'm a Django newbie, but fairly experienced at programming. I have a set of related applications that I'd like to group into a sub-application but can not figure out how to get manage.py to do this for me. Ideally I'll end up with a structure like: project/ app/ subapp1/ subapp2/ I've tried: manage.py startapp app.subapp1 manage.py startapp app/subapp1 but this tells me that / and . are invalid characters for app names I've tried changing into the app directory and running ../manage.py subapp1 but that makes supapp1 at the top level. NOTE, I'm not trying to directly make a stand-alone application. I'm trying to do all this from within a project.

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• vBulletin Nightmare

  - by Chris

  I am creating a vBulletin forum community called: wehypnosis We purchased the vBulletin version 4.0 CMS and the SEO plugin. Im used to designing and building templates for drupal, wordpress and joomla. All of which have great documentation and many tutorials built by the community. But vBulletin although claimed as the best forum software on the internet, is missing any form of documentation worth reading. The only thing I can find to help me rebuild this monster is www.vbulletin.com/docs/ Does anyone know of a set of tutorials or any documentation which would help me: Configure a good solid working version? Give detailed instruction on how to build themes for vBulletin? Drupal has a mountain of great books and resources. Does vBulletin?

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• Michael Hartl's rails tutorial: reusing sessions resource for multiple User types

  - by ntaj

  I'm learning Ruby on Rails through Micheal Hartl's tutorial. In my web application, I require two types of Users, called publishers and subscribers. Currently I have a publishers resource and a subscribers resource. I'd like both of them to be able to use the sessions resource for signin/signout. I'm looking for some direction on how to implement this. Should my publisher and subscriber resource inherit from the User resource, so that, for example, the following code works through polymorphism? def create user = User.find_by_email(params[:session][:email]) if user && user.authenticate(params[:session][:password]) # Sign the user in and redirect to the user's show page. else # Create an error message and re-render the signin form. end end The publisher and subscriber do not have many common fields and different capabilities, so I think they should be modeled as two separate resources, but how to have them share the Sessions resource?

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• Rails link to current page and passing parameters to it

  - by Faisal

  I am adding I18N to my rails application by passing the locale using url params. My urls are looking like http://example.com/en/users and http://example.com/ar/users (for the english and arabic locales respectively). In my routes file, I have defined my routes with a :path_prefix option: map.resources :users, :path_prefix => '/:locale' And locale is being set using a before_filter defined in ApplicationController def set_locale I18n.locale = params[:locale] end I also defined ApplicationController#default_url_options, to add locale to all urls generated by the application: def default_url_options(options={}) {:locale => I18n.locale} end What I want is to add a link in the layout header (displayed in all pages) that would link to the same page but with the other locale. For instance, if I am browsing the arabic locale, I want a "English" link in the header, that will redirect me back to my current page, and set the locale to english. Is there a way to do this in rails?

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• rename file names from lower case to upper case

  - by Adnan

  Hello, I have about 2k of file that are currently in lower case like: file_one.cfr file_two.cfr .... I am searching for a fast way to rename them to upper case so they would be like; FILE_ONE.cfr FILE_TWO.cfr .... If I use from my shell; for i in *; do mv $i `echo $i | tr [:lower:] [:upper:]`; done I can get all file and the file extensions to upper case. But the extension should remain in lowercase, so my approach does not work. Any programming language is welcome.

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• Asynchronous operations performance

  - by LicenseQ

  One of the features of asynchronous programming in .NET is saving threads during long running operation execution. The FileStream class can be setup to allow asynchronous operations, that allows running (e.g.) a copy operation without virtually using any threads. To my surprise, I found that running asynchronous stream copy performs not only slower, but also uses more processing power than synchronous stream copy equivalent. Is there any benchmark tests were done to compare a synchronous vs asynchronous operation execution (file, network, etc.)? Does it really make sense to perform an asynchronous operation instead of spanning separate thread and perform synchronous operation in server environment if the asynchronous operation is times slower than the synchronous one?

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• WPF Resource Dictionary in a separate assembly

  - by Gustavo Cavalcanti

  I have resource dictionary files (MenuTemplate.xaml, ButtonTemplate.xaml, etc) that I want to use in multiple separate applications. I could add them to the applications' assemblies, but it's better if I compile these resources in one single assembly and have my applications reference it, right? After the resource assembly is built, how can I reference it in the App.xaml of my applications? Currently I use ResourceDictionary.MergedDictionaries to merge the individual dictionary files. If I have them in an assembly, how can I reference them in xaml? Thanks for your help! Gustavo

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• append a numpy array to a numpy array

  - by Fraz

  I just started programming in python and am very new to numpy packages.. so still trying to get a hang of it. I have a an numpy_array so something like [ a b c] And then I want to append it into anotehr numpyarray (Just like we create a list of lists) How do we create an array of numpy arrays containing numpy arrays I tried to do the following without any luck >>> M = np.array([]) >>> M array([], dtype=float64) >>> M.append(a,axis=0) Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'numpy.ndarray' object has no attribute 'append' >>> a array([1, 2, 3])

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• Trying to parse links in an HTML directory listing using Java regex

  - by DiskCrasher

  Ok I know everyone is going to tell me not to use RegEx for parsing HTML, but I'm programming on Android and don't have ready access to an HTML parser (that I'm aware of). Besides, this is server generated HTML which should be more consistent than user-generated HTML. The regex looks like this: Pattern patternMP3 = Pattern.compile( "<A HREF=\"[^\"]+.+\\.mp3</A>", Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE); Matcher matcherMP3 = patternMP3.matcher(HTML); while (matcherMP3.find()) { ... } The input HTML is all on one line, which is causing the problem. When the HTML is on separate lines this pattern works. Any suggestions?

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• How to Set Timeout for Ruby ODBC Driver for SQL Server?

  - by Seth Ladd

  Hello, I would like to know how to explicitly set a timeout for the Ruby DBI ODBC driver, when connecting to SQL Server. I would like long running queries to simply timeout and cancel themselves, saving further server resources and Rails processes. This was happening while we were using the ADO based Ruby driver, but now that we've switched to DBD::ODBC we are no longer experiencing timeouts. I've looked around but cannot find out how to set the query timeout value. I've tried explicitly setting some values in the driver, and specifying both Timeout and ConnectionTimeout and Connect Timeout in the DSN configuration for the connection. No luck. Your tips and advice are very appreciated. Thanks! Seth

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• Code editor skins?

  - by Khalspi

  This is a kind of unorthodox question. Frankly, I won't lie to you. I am new to programming and am planning to improve myself. I enjoy coding but I need something to keep me going during the down times, so my question is: Is there such a thing as a code editor skin? A compiler skin? For example, you have the Command Prompt, it has a black background with white writing, it seems geeky, exactly what I want. I want a compiler that looks like command prompt...black with white writing (or green) or still has color coding (some compilers change color of text based on command). Yes, this is mainly for boasting, but I don't want to show someone something that basically looks like a text editor, I just want something that looks a little cooler. P.S (This question may seem a little unnecessary, it is because it is my first question, I'd like to warm up to this community before I start asking some real questions about code.)

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• What's wrong with the analogy between software and building construction?

  - by kuosan

  Many people like to think of building software as constructing a building so we have terms like building blocks and architecture. However, lately I've been to a couple of talks and most people say this analogy is wrong especially around the idea of having a non-coding software architect in a project. In my experience, good software architects are those who also write code so they won't design things that only looks good on paper. I've worked with several Architecture Astronauts, who have either limited or outdated experience in programming. These architecture astronauts quite often missed out critical details in their design and cause more harm than good in a project. This makes me wonder what are the differences between constructing a software and a building? How come in the building industry they can have architects who probably never build a house in their life and purely handles design work but not in the software development field?

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• Throwing a new exception while throwing an old exception

  - by FredOverflow

  If a destructor throws in C++ during stack unwinding caused by an exception, the program terminates. (That's why destructors should never throw in C++.) If a finally block is entered in Java because of an exception in the corresponding try block and that finally block throws another exception, the first exception is silently swallowed. This question crossed my mind: Could a programming language handle multiple exceptions being thrown at the same time? Would that be useful? Have you ever missed that ability? Is there a language that already supports this? Is there any experience with such an approach? Any thoughts?

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• Slow select when inserting large amounts of data (MYSQL)

  - by siannopollo

  I have a process that imports a lot of data (950k rows) using inserts that insert 500 rows at a time. The process generally takes about 12 hours, which isn't too bad. Normally doing a query on the table is pretty quick (under 1 second) as I've put (what I think to be) the proper indexes in place. The problem I'm having is trying to run a query when the import process is running. It is making the query take almost 2 minutes! What can I do to make these two things not compete for resources (or whatever)? I've looked into "insert delayed" but not sure I want to change the table to MyISAM. Thanks for any help!

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• Cassandra and asp.net (C#)

  - by Sergey Osypchuk

  I am interested to create portal on cassandra services, since I faced some performance and scale issues starting from 1 million of records. Definitely, it could be solved, but I am interested on other options. My main issues is cost of updating all necessary indexes, to make reading fast. First, is cassandra is good way for asp.net programmers? I mean, maybe there is some other projects, which worth to take a look And second, can you provide any documentation samples on how to start with cassandra programming from C#?

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• Python Comet Server

  - by HenryL

  I am building a web application that has a real-time feed (similar to Facebook's newsfeed) that I want to update via a long-polling mechanism. I understand that with Python, my choices are pretty much to either use Stackless (building from their Comet wsgi example) or Cometd + Twisted. Unfortunately there is very little documentation regarding these options and I cannot find good information online about production scale users of comet on Python. Has anyone successfully implemented comet on Python in a production system? How did you go about doing it and where can I find resources to implement my own?

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• Cocoa: getting a Table View cell to send action messages

  - by underthetable

  I'm really having trouble getting a Cocoa Table View cell to send action messages. At the most basic level, in IB there is an action assigned for the NSTextViewCell object, and after editing and pressing Return nothing happens. So I have an IBOutlet hooked up to the NSTextViewCell, and have been experimenting with NSActionCell messages to it. But the Table View seems to pretty much just ignore them. I've also tried subclassing NSTextViewCell, but the methods I'm seeing all look like they want to pass values to the object from somewhere, not return a value from inside the object to configure its behavior. I'm pretty new to programming and Cocoa -- can someone explain each thing that needs to be overridden and how and where to do it?

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• Way to Remove Invite Limit on FBML Multi-Friend Selector

  - by David

  Hi there, I tried to look through various resources before posting here, but was having a surprisingly difficult time finding an answer to my question. Sorry in advance if I overlooked it. I'm currently trying to add the FBML Multi-Friend Selector to my Facebook page. It has a limit on the number of friends you can invite at a time ("Add up to 20 of your friends by clicking on their pictures below"). From what I've looked through it sounds like 20 is the max number of friends a user can invite, but then looking at Mint's page, they have a 22 max invite (http://www.facebook.com/mint?ref=ts) I thought it might be based on number of page fans, as Mint has 56,000, but that doesn't seem to be the case as this page only has 256 fans and have a max of 26 friend invites (http://www.facebook.com/tivix?v=app_106437999388442). Therefore, I don't really understand how this system works. Is there a way for me to increase to 26? Unlimited? Thanks for your help!

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• Reordering matrix elements to reflect column and row clustering in naiive python

  - by bgbg

  Hello, I'm looking for a way to perform clustering separately on matrix rows and than on its columns, reorder the data in the matrix to reflect the clustering and putting it all together. The clustering problem is easily solvable, so is the dendrogram creation (for example in this blog or in "Programming collective intelligence"). However, how to reorder the data remains unclear for me. Eventually, I'm looking for a way of creating graphs similar to the one below using naive Python (with any "standard" library such as numpy, matplotlib etc, but without using R or other external tools).

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• MIPS processors : Are they still in use? Which other architecture should I learn?

  - by claws

  I've been programming for x86 & x86-64 in assembly language for few months. Now, I want to move on to some different kind of processors. MIPS, SPARC, PowerPC, Itanium, ARM of these I found ARM is being widely use. But the books I see that tutorials & books teach about MIPS more than all these other architectures. Why is MIPS so popular? Are MIPS processors still in use? Which architecture should I go for?

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• Etiquette for refactoring other people's sourcecode?

  - by Prutswonder

  Our team of software developers consists of a bunch of experienced programmers with a variety of programming styles and preferences. We do not have standards for everything, just the bare necessities to prevent total chaos. Recently, I bumped into some refactoring done by a colleague. My code looked somewhat like this: public Person CreateNewPerson(string firstName, string lastName) { var person = new Person() { FirstName = firstName, LastName = lastName }; return person; } Which was refactored to this: public Person CreateNewPerson (string firstName, string lastName) { Person person = new Person (); person.FirstName = firstName; person.LastName = lastName; return person; } Just because my colleague needed to update some other method in one of the classes I wrote, he also "refactored" the method above. For the record, he's one of those developers that despises syntactic sugar and uses a different bracket placement/identation scheme than the rest of us. My question is: What is the (C#) programmer's etiquette for refactoring other people's sourcecode (both semantic and syntactic)?

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• are posix pipes lightweight?

  - by Nils Pipenbrinck

  In a linux application I'm using pipes to pass information between threads. The idea behind using pipes is that I can wait for multiple pipes at once using poll(2). That works well in practice, and my threads are sleeping most of the time and only wake up if there is something to do for them. On the user-space the pipes look just like two file-handles. Now I wonder wonder how much resources such a pipes use on the OS side. Btw: In my application I only send single bytes every now and then. Think about my pipes as simple message queues that allow me to wake-up receiving threads, tell them to send some status-data or to terminate.

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• Tracking Google Analytics events with server side request automation

  - by Esko

  I'm currently in the process of programming an utility which generates GA tracking pixel (utm.gif) URL:s based on given parameters. For those of you who are wondering why I'm doing this on the server side, I need to do this server side since the context which I'm going to start tracking simply doesn't support JavaScript and as such ga.js is completely useless to me. I have managed to get it working otherwise quite nicely but I've hit a snag: I can't track events or custom variables because I have no idea how exactly the utme parameter's value should be structured to form a valid event or var type hit. GA's own documentation on this parameter isn't exactly that great, either. I've tried everything from Googling without finding anything (which I find ironic) to reverse engineering ga.js, unfortunately it's minified and quite unreadable because of that. The "mobile" version of GA didn't help either since officially GA mobile doesn't support events nor vars. To summarize, what is the format of the utme parameter for page hit types event and custom variable?

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