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• Programming languages similar to ActionScript 3 / EcmaScript based

  - by Juanlu001

  I almost learned programming and OOP basic concepts with ActionScript 3 on the Flash Platform years ago. Some time has passed since then; I'm not a professional programmer, but I have written code in PHP, Fortran, and now Python. But, lately, I have missed ActionScript 3 OOP implementation, static typing and, I confess, curly braces. As Flash platform is slowly dying nowadays, I'm looking for an Open Sourced programming language similar to ActionScript 3. I've read about Java, which is the most similar one I found, but actually is the only one it doesn't interest me (I started to hate it after bad experiences with web applets). Any ideas? Edit: Added EcmaScript to the title and the tags; I think that is what I am looking for.

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• Alps touchpad detected as mouse dell inspiron n5110

  - by Shota Bakuradze

  Now I know that this has been asked several times here but I couldn't find any decent solution to it. So I am running the latest Ubuntu on my dell n5110 and my touchpad is detected as a mouse, So I don't have the touchpad options avaliable. can't use multitouch and can't disable it either. I have tried the dkms driver: http://people.canonical.com/~sforshee/alps-touchpad/psmouse-alps-0.10/ but when installing it with dpkg I get the following error: ERROR (dkms apport): unable to determine source package for psmouse-alps-dkms Error! Bad return status for module build on kernel: 3.2.0-25-generic-pae (i686) Consult /var/lib/dkms/psmouse-alps/0.10/build/make.log for more information. I have installed all the updates as well. Can someone help me out with this issue?

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• Expressions that are idiomatic in one language but not used or impossible in another

  - by Tungsten

  I often find myself working in unfamiliar languages. I like to read code written by others and then jump in and write something myself before going back and learning the corners of each language. To speed up this process, it really helps to know a few of the idioms you'll encounter ahead of time. Some of these, I've found are fairly unique. In Python you might do something like this: '\n'.join(listOfThings) Not all languages allow you to call methods on string literals like this. In C, you can write a loop like this: int i = 50; while(i--) { /* do something 50 times */ } C lets you decrement in the loop condition expression. Most more modern languages disallow this. Do you have any other good examples? I'm interested in often used constructions not odd corner cases.

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• in memory datastore in haskell

  - by Simon

  I want to implement an in memory datastore for a web service in Haskell. I want to run transactions in the stm monad. When I google hash table steam Haskell I only get this: Data. BTree. HashTable. STM. The module name and complexities suggest that this is implemented as a tree. I would think that an array would be more efficient for mutable hash tables. Is there a reason to avoid using an array for an STM hashtable? Do I gain anything with this stem hash table or should I just use a steam ref to an IntMap?

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• What software is responsible for connecting to the wireless net specified in /etc/network/interfaces?

  - by zuba

  I'm curious what software (package, utility in bin's) handle interface parameters in /etc/network/interfaces and decides to connect to the specified wireless net. I use wifi usb stick dlink DWL-110 attached to wlan0 with ndiswrapper driver. Sometimes wlan0 sees my wifi net - iwlist wlan0 scan shows it, but does not connect to it - iwconfig shows AP Not-Associated, until I replug the stick. Neither reinserting module with ndiswrapper, not ifdown/ifup or restarting networking helps. That is why I need to know what OS entity handles connection/reconnection to wireless net. EDIT: shame on me, I use wireless-tool package with wep encryption

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• Is there a ".d" directory to use to load modules at boot time, opposed to /etc/modules?

  - by gertvdijk

  I am automating some configurations on my systems using Puppet. For a group of machines I want to load a kernel module at boot time. The most elegant way seems to edit /etc/modules and add one on an individual line. However, I would like to use separate files in a ".d" directory structure for easier maintainability. For modprobe and specifying the options for modules, there's /etc/modprobe.d/, but what's the most elegant way for actually loading modules at boot time using a single new file? Basically, I'm looking for the non-existing /etc/modules.d/ directory. Any suggestions?

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• Verify uniqueness of new content

  - by rogerkk

  I'm working on a review site, where there is a minor issue with almost duplicate reviews across items. Just a few words are changed. It would be very nice to be able to uncover these duplicates before they are approved by a moderator, and I'm hoping someone could chime in on the best strategy to get there. The site is running Ruby on Rails on a Postgres database and using Thinking Sphinx for search (all on Heroku), and so far the best option I see is to be pulling all the reviews out of the db and using a module like amatch to compare the strings. Not very efficient, so in this case I guess I'll have to limit the number/age of reviews to scan for dupes. Anyone got a better idea?

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• getting the user back where they came from with mod_form_auth

  - by bmargulies

  Using the mod_form_auth module in Apache HTTPD 2.4.3, I am looking for a way to have the user redirected to their original desired target after completing a login. That is, if I have a <Location /protected> ... form auth config here </Location> the user might browse to /protected/a, or to protected/b. In either case, they will be presented with the login form. However, as far as I can see, I must specific a single 'success' URL. I'm wondering if I'm missing some Apache feature that would allow me to, for example, cause the redirect to the login form go to something like: https://login.html?origTarget=/protected/a via some syntax on the AuthForLoginRequiredLocation statement?

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• Constructor should generally not call methods

  - by Stefano Borini

  I described to a colleague why a constructor calling a method can be an antipattern. example (in my rusty C++) class C { public : C(int foo); void setFoo(int foo); private: int foo; } C::C(int foo) { setFoo(foo); } void C::setFoo(int foo) { this->foo = foo } I would like to motivate better this fact through your additional contribute. If you have examples, book references, blog pages, or names of principles, they would be very welcome. Edit: I'm talking in general, but we are coding in python.

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• Connectify like functionality on Ubuntu running on T61 - wifi 4965 AGN

  - by Vivek Sharma

  I would like to use my laptop as an Access point, so that i can connect my phones through Wifi. I have done this my office laptop T410. I am having T61 with wifi module 4965. Connectify on windows does not support it. I am following -- https://help.ubuntu.com/community/WifiDocs/WirelessAccessPoint to make achieve WAP capability on my T61 running ubuntu 10.10. The link says something about "master mode", how do i put my T61 wifi-inter4965 in master mode. Can i install madwifi or atheros drivers on it. I am using galaxy S froyo, and it does not support Ad-hoc network. Has anyone tired to achieve this.

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• Getting front audio jacks to work

  - by Ashfame

  I run Ubuntu 10.10 on my Intel D945. My front audio ports don't work in Ubuntu, the rear one does. I never got it working earlier when I had Ubuntu 10.04 but this time I am going to try it again. My codec is SigmaTel STAC9227 My ALSA information is here. Handy details: !!ALSA Version !!------------ Driver version: 1.0.23 Library version: 1.0.23 Utilities version: 1.0.23 !!Loaded ALSA modules !!------------------- snd_hda_intel snd_hda_intel I know something that I will have to change the model of my module to make the front audio jack works but I couldn't find a model related line in my ALSA configuration file - /etc/modprobe.d/alsa-base.conf (I was able to get to that point in Ubuntu 10.04, may be something has changed). How can I proceed from here?

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• DRY, string, and unit testing

  - by Rodrigue

  I have a recurring question when writing unit tests for code that involves constant string values. Let's take an example of a method/function that does some processing and returns a string containing a pre-defined constant. In python, that would be something like: STRING_TEMPLATE = "/some/constant/string/with/%s/that/needs/interpolation/" def process(some_param): # We do some meaningful work that gives us a value result = _some_meaningful_action() return STRING_TEMPLATE % result If I want to unit test process, one of my tests will check the return value. This is where I wonder what the best solution is. In my unit test, I can: apply DRY and use the already defined constant repeat myself and rewrite the entire string def test_foo_should_return_correct_url(): string_result = process() # Applying DRY and using the already defined constant assert STRING_TEMPLATE % "1234" == string_result # Repeating myself, repeating myself assert "/some/constant/string/with/1234/that/needs/interpolation/" == url The advantage I see in the former is that my test will break if I put the wrong string value in my constant. The inconvenient is that I may be rewriting the same string over and over again across different unit tests.

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• Connecting remote mysql database to local mysql databse? [migrated]

  - by Shashank

  I want to write a php code to be embedded in drupal7 module. I want to call a procedure which can copy the newly generated data in local mysql database to the remote mysql database. When data is inserted in tables 'A' of my local data base it should be copied to the specific table 'B' of the remote mysql server's database. Table 'A' is on local host. Table 'B' is on remote server. insert data on 'A' - copied data in 'B' Is this possible? Thanks for the help.

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• How do I install pgAdmin III for postgreSQL 9.2?

  - by Vector

  I have a Windows server that runs postgresql 9.2. I want to hit it using pgAdmin III from my Ubuntu 12.10 workstation box. I installed pgAdmin III from synaptic and also tried direct download from postgreSQL site using software installer. Regardless, I can get only get pgAdmin III for postgresql 9.1. When I run pgAdmin III and point to my server I get an error message telling me that the database is 9.2 and my pgAdmin III is for 9.1, isn't compatible with 9.2. I can access the server itself fine OK from the Ubuntu box - I have Python programs that hit the database with no problems - but I need pgAdmin III for 9.2 running under Ubuntu 12.10. Is it available? Where do I get it?

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• How to make audio and video streaming servers work?

  - by Santosh Linkha

  I am PHP MySQL developer and I am interested in the way television and radio are broadcasted over Internet live. I want to know how it works and and what are its requirements (which package of which programming language offers the best). And please clarify me: Websites are stored in servers. From my desktop, if I want to broadcast some video, then I need to connect to webserver (to upstream the video). Is there an application to do that (or do I have to code that or embed in my web application and which programming language would be suitable (does Python support that))? And I also need a script to handle the upstreamed video or audio (can I do that with PHP)?

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• Optimization of a Hybrid Pagination Scheme

  - by Kaustubh Karkare

  I'm working on a Web Application using node.js in which I'm building a partial copy of the database on the client-side to decrease the load on my server. Right now, I have a function like this (expressed as python-style pseudocode, but implemented in JavaScript): get(table_name,primary_key): if primary_key in cache[table_name]: return cache[table_name][primary_key] else: x = get_data_from_server(table_name,primary_key) # socket.io return cache[table_name][primary_key] = x While this scheme works perfectly well for caching individual rows, I'd like to extend it to support the creation of paginated tables ordered according to the primary_key, and loading additional data using the above function for only the current and possibly the adjacent pages. Now, I don't want to keep the list of primary keys on the server to be retrieved every time I need to change the page (which, for reasons beyond the scope here, will be very frequent), and keeping it on the client side, subject to real-time create/delete events from the server, doesn't seem that good an idea, even after compression (using ranges, instead of individual values). What is the best way to calculate which items are to be displayed on a random page, minimizing the space requirements & the need for communication with the server?

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• Salting a public hash

  - by Sathvik

  Does it make any sense at all to salt a hash which might be available publicly? It doesn't really make sense to me, but does anyone actually do that? UPDATE - Some more info: An acquaintance of mine has a common salted-hash function which he uses throughout his code. So I was wondering if it made any sense at-all, to do so. Here's the function he used: hashlib.sha256(string+SALT).hexdigest() Update2: Sorry if it wasn't clear. By available publicly I meant, that it is rendered in the HTML of the project (for linking, etc) & can thus be easily read by a third party. The project is a python based web-app which involves user-created pages which are tracked using their hashes like myproject.com/hash so thus revealing the hash publicly. So my question is, whether in any circumstances would any sane programmer salt such a hash? Question: Using hashlib.sha256(string+SALT).hexdigest() vs hashlib.sha256(string).hexdigest() , when the hash isn't a secret.

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• Splitting a sitemap by content type

  - by James

  I currently am tasked with submitting our website sitemap to the search engines every week. We have a module which does offer sitemap generation but we find using it does not work very well as not all pages are included and it does not split the sitemap by content. I've used various (online and offline) tools to generate the sitemaps which is not the problem. The problem is that after every generation (which takes most of each Monday) I have to manually go through the sitemap and categorise the links in to products, pages, categories and sub categories. I've experimented successfully with XSL to split the sitemap but it is still a labour intensive process. Does anyone know of a good method to split the sitemap? Currently there are around 20,000 links (iirc) in total.

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• building bittorrent client from scratch

  - by Bill

  I'm new to programming. I find reading introductory programming books boring. I think these doesn't teach enough of the problem solving skills that I need. So I decided to build a bitTorrent client. I think I understand to some point how the protocol works. I have also downloaded the source code of deluge bittorrent client. I have access to python documentation too. I need to know if there are some resources available that can help me build a bitTorrent client that are more detailed than the wikipedia article here: http://en.wikipedia.org/wiki/BitTorrent

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• How relevant is PHP today for browser games?

  - by Bitgarden

  I was the lead developer of 2 moderately successful browser games quite a few years back, and plan on working on a new game soon. At the time, I wrote them in pure PHP (no template engine or anything of the sort). I'd like to start working on a new game, but have been out of the web development world for a while. Reading around, I hear a lot of good about Rails, Django, Node.js, etc., with which I have no experience (although I know my way around Python, Javascript, and the others quite well). So my question is the following- if I were to go in my old ways and go with PHP again, would I be making things hard for myself? Would picking something more "trendy" have a real impact on my development? In addition, does anyone have any pointers relating to specifically developing browser games with these more modern tools?

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• Using .add() on the same widget more than once

  - by Dillon Gilmore

  I asked this question on Reddit and was directed here. http://www.reddit.com/r/Ubuntu/comments/vhadl/quickly_dynamic_ui/ Unfortunately I am having the same issue and the problems seems that you can only use .add() on a widget once. So here is my code, self.ui.labels = [] for titles in entries: label = Gtk.Label() self.ui.labels.append(label) self.ui.viewport1.add(self.ui.labels[-1]) self.ui.paned1.show_all() Now, for fun I decided "What would happen if I just manually did..." self.ui.viewport1.add(Gtk.Label()) self.ui.viewport1.add(Gtk.Button()) self.ui.viewport1.add(Gtk.Entry()) For my first code snippet I get this error, Gtk-CRITICAL **: gtk_viewport_add: assertion gtk_bin_get_child (bin) == NULL' failed The error happens an unknown amount of times because the list entries can vary in length, but for my second code snippet it happens exactly twice. This means that when I viewport1.add() it works the first time, but all adds after that receive the error above. So my question, is there a way in python to use .add() on the same widget more than once?

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• How do I get "ruby" to do what "ruby1.9.1" does?

  - by Daniel

  I want to start off by saying... I really don't need to be using 1.9.2. I understand that you don't ever, ever use Python 3.2, so if the common advice is that I should use 1.8, I'll do that. But don't tell me to do that because it's easier. Whatever version I should be using, though, the question is still relevant: What's a good way to make one command do another command? (I suppose I could write a c program to launch ruby1.9.1, call the executable ruby, and put it in my bin, but this seems like less than a good idea)

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• How to organize my site's file system properly?

  - by Wolfpack'08

  Doing some reading on Stack Overflow, I've found a lot of information suggesting that proper organization of a file system is crucial to a well-written web app. One of the key pieces of evidence is high-frequency references to "separation of concerns" in questions related to keeping programs organized. Now, I've found some information on organizing file systems (Filesystem Hierarchy Standard) from 2004. It raises only two concerns: first, the standard's a bit dated, so I believe it may be possible to do better given the changes in technology over the past 8 years; second, and most important, my application is very small compared to an entire Linux distro. I think that the file system should be organized very differently because of that. Here's what I'm looking at, currently: /scripts, /databases, /www -> /dev, /production -> login, router, admin pages, /sites -> content types, static pages /modules, /includes, /css, /media -> /module-specific-media

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• Transitioning from Chemical engineering to software industry what to do??

  - by console cowboy

  Hello all. Currently I am in my last semester of Engineering & has made my mind to switch to software field but given my knowledge of programming limited only to C. I am confused what to do next.Currently i have two choices. Get good at C, learn Python & write some good code/Apps & increase my employability chances. Do some Java/.Net certifications to increase my employability chances? Any kind of advice/suggestion is highly welcomed. P.S:I am also good at Linux & have a above average knowledge of operating systems. P.p.s: Advice from Indian Programmers would be beneficial.

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• Port numbers appended to anchor tags

  - by glifchits

  I've built a static site. Locally, when I serve the content with python -m SimpleHTTPServer everything behaves normally, but when I copy the HTML onto the server and browse the site at the server's URL, some links will have a port number appended to the domain. For example: url.com:84/path where the correct path is url.com/path. The port number is usually different, always between 81-85. It is an Apache server. I'm not experienced with web server configuration, and I'm not the admin of the server. Let me know if there is more information that can help solve my problem. ~> cat /etc/*release* SuSE SLES-8 (i386) VERSION = 8.1 UnitedLinux 1.0 (i586) VERSION = 1.0 LSB_VERSION="1.2" DISTRIB_ID="UnitedLinux" DISTRIB_RELEASE="1.0" DISTRIB_DESCRIPTION="UnitedLinux 1.0 (i586)"

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