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• How to install ac-R mode in emacs?

  - by David

  I have recently added the file ac-R.el to /usr/local/share/emacs/site-lisp, along with (require 'ac-R) to ~/.emacs Now, when I open emacs with --debug-init, I get the error Debugger entered--Lisp error: (void-variable ac-modes) add-to-list(ac-modes ess-mode) eval-buffer(#<buffer *load*<2>> nil "/usr/local/share/emacs/site-lisp/ac-R.el" nil t) ; Reading at buffer position 7191 load-with-code-conversion("/usr/local/share/emacs/site-lisp/ac-R.el" "/usr/local/share/emacs/site-lisp/ac-R.el" nil t) require(ac-R) eval-buffer(#<buffer *load*> nil "/home/dlebauer/.emacs" nil t) ; Reading at buffer position 3548 load-with-code-conversion("/home/dlebauer/.emacs" "/home/dlebauer/.emacs" t t) load("~/.emacs" t t) #[nil "\205\264 and when clicking on load-with-code-conversion, it says Can't find library /usr/share/emacs/23.1.50/lisp/international/mule.el even though I have installed mule via synaptic (I am using Ubuntu 10.04) How can I get the mule library in the right place?

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• reset locale in debian under Squeeze

  - by si2w

  I have problems with locale in debian. I tried many thing but it doesn't anything for me : locale -a locale: Cannot set LC_CTYPE to default locale: No such file or directory C POSIX en_US.utf8 I try to set en_US.utf8 without success with this :dpkg-reconfigure locales -plow perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = "en_US", LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = (unset) are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory /usr/bin/locale: Cannot set LC_CTYPE to default locale: No such file or directory /usr/bin/locale: Cannot set LC_ALL to default locale: No such file or directory Generating locales (this might take a while)... en_US.UTF-8... done Generation complete. perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = "en_US", LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = (unset) are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = "en_US", LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = (unset) are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). After reboot, i try to use a perl script : perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = "en_US", LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = "en_US.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). Here is my /etc/default/locale config file : cat /etc/default/locale LANG=en_US.UTF-8 LANGUAGE=en_US Any idea to solve this (stupid) problem ? Thanks

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• Default Keyboard for new users in Windows 7

  - by xited

  I just installed Windows 7 and I want all users signing in to the computer to see the Language Bar customized with the following three languages: "English (American)" "French (Standard)" "Chinese (Simplified PRC)" I am running the following four lines of code at log on in order to change the registry such that each user will see the language bar, and then have access to the three keyboard layouts mentioned above. reg add "HKCU\Software\Microsoft\CTF\LangBar" /v ShowStatus /t REG_DWORD /d 4 /f reg add "HKCU\Keyboard Layout\Preload" /v 2 /d 0000040c reg add "HKCU\Keyboard Layout\Preload" /v 3 /d 00000c0a reg add "HKCU\Keyboard Layout\Preload" /v 4 /d 00000804 The above works fine, but with one small/major inconvenience: the user has to log off and then log back on in order for these changes to take effect and see the language bar, as described above. The question becomes: How can I force these changes to take effect so that users don't have to log off and then log back in to see the language bar. This has to be done automatically when users log in.

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• Help on using mod_rewrite to serve I18N static site

  - by Guandalino

  My static site www.example.com is translated in different languages and files are organized in this hierarchy: / /de index.html seite-1.html /en index.html page-1.html /it index.html pagina-1.html The root contains no files, just one subdirectory for each language the site is translated in, while subdirectories contain pages translated (both content and file name are) in the language corresponding to subdirectory name, de, en, it, etc. The question is: how to configure mod_rewrite so that when a client visits www.example.com it is taken to the correct version of the site, falling back to english version if the required locale is not supported (i.e. Accept-Language header doesn't exist or specifies a language for which the site is not available, e.g. fr)? Thanks for any pointer, I'm here to provide further details or feedback! Best regards

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• Can mod-rewrite be used to set environmental variables?

  - by VLostBoy

  Hi, I've got an existing simple rewrite rule like so: <Directory /path> RewriteEngine on RewriteBase / # if the requested resource does not exist RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # route the uri to a front controller RewriteRule ^(.*)$ index.php/$1 [L] </Directory> This works fine, but I want to do one of either two things. On the basis of detecting the clients accept-language header, I want to either (i) Set the detected language as an environmental variable that the script can use or (ii)Rewrite the request so that the url begins with the language code (e.g. www.example.com/en/some/resource) In terms of implementing (i), I defined this rule: <Directory /path> RewriteEngine on RewriteBase / # if the requested resource does not exist RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # if the users preferred language is supported... RewriteCond %{HTTP:Accept-Language} ^.*(de|es|fr|it|ja|ru|en).*$ [NC] # define an environmental variable PREFER_LANG RewriteRule ^(.*)$ - [env=PREFER_LANG:%1] # route the uri to a front controller RewriteRule ^(.*)$ index.php/$1 [L] </Directory> I've tried a few variations, but PREFER_LANG is not defined in $_SERVER nor retrievable by getenv. In terms of implementing (ii)... lets just say its messy. I'll post it if I can't get an answer to one. Can anyone advise me? Thanks!

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• Hiding my location to websites with region-specific languages/content

  - by Tudor

  I just went to download Microsoft Secority Essentials and it enraged me as it redirected me to a site in my home language and not the default English. If I go to America, I don't want them to speak Swahili. It reminded me of all the other websites who try to do the same. I don't want my content in greek when I'm on vacation! I for one simply can't work on a computer unless the language is English (or unless there's a VERY good reason to change the language). Location aware content is only good for download mirrors, and even then I would rather pick from a list of countries myself. (or if you can't speak anything but your own language) I know websites get your location from your IP and ISP, but is there any way you can inhibit this behaviour on a browser level? Is there any Chrome/Firefox extension for it? Do I really have no choice but to hide my IP? There's all sorts of services that claim they're hiding your IP for free so that people can't log and trace your steps through the internet, but they're probably logging it themselves and making money off it. Why else would they be free? I've found that Firefox has an Option that says "Choose your preferred language when displaying pages". Haven't found anything for Chrome.

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• Compiler issues on VC++ 2008 Express, Seemingly correct code throws errors.

  - by Anthony Clever

  Hi there, I've been trying to get back into coding for a while, so I figured I'd start with some simple SDL, now, without the file i/o, this compiles fine, but when I throw in the stdio code, it starts throwing errors. This I'm not sure about, I don't see any problem with the code itself, however, like I said, I might as well be a newbie, and figured I'd come here to get someone with a little more experience with this type of thing to look at it. I guess my question boils down to: "Why doesn't this compile under Microsoft's Visual C++ 2008 Express?" I've attached the error log at the bottom of the code snippet. Thanks in advance for any help. #include "SDL/SDL.h" #include "stdio.h" int main(int argc, char *argv[]) { FILE *stderr; FILE *stdout; stderr = fopen("stderr", "wb"); stdout = fopen("stdout", "wb"); SDL_Init(SDL_INIT_EVERYTHING); fprintf(stdout, "SDL INITIALIZED SUCCESSFULLY\n"); SDL_Quit(); fprintf(stderr, "SDL QUIT.\n"); fclose(stderr); fclose(stdout); return 0; } /* 1>------ Build started: Project: opengl_crap, Configuration: Debug Win32 ------ 1>Compiling... 1>main.cpp 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(6) : error C2090: function returns array 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(6) : error C2528: '__iob_func' : pointer to reference is illegal 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(6) : error C2556: 'FILE ***__iob_func(void)' : overloaded function differs only by return type from 'FILE *__iob_func(void)' 1> c:\program files\microsoft visual studio 9.0\vc\include\stdio.h(132) : see declaration of '__iob_func' 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(7) : error C2090: function returns array 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(7) : error C2528: '__iob_func' : pointer to reference is illegal 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(9) : error C2440: '=' : cannot convert from 'FILE *' to 'FILE ***' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(10) : error C2440: '=' : cannot convert from 'FILE *' to 'FILE ***' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(13) : error C2664: 'fprintf' : cannot convert parameter 1 from 'FILE ***' to 'FILE *' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(15) : error C2664: 'fprintf' : cannot convert parameter 1 from 'FILE ***' to 'FILE *' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(17) : error C2664: 'fclose' : cannot convert parameter 1 from 'FILE ***' to 'FILE *' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast 1>c:\documents and settings\owner\my documents\visual studio 2008\projects\opengl_crap\opengl_crap\main.cpp(18) : error C2664: 'fclose' : cannot convert parameter 1 from 'FILE ***' to 'FILE *' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast 1>Build log was saved at "file://c:\Documents and Settings\Owner\My Documents\Visual Studio 2008\Projects\opengl_crap\opengl_crap\Debug\BuildLog.htm" 1>opengl_crap - 11 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== */

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• Data munging and data import scripting

  - by morpheous

  I need to write some scripts to carry out some tasks on my server (running Ubuntu server 8.04 TLS). The tasks are to be run periodically, so I will be running the scripts as cron jobs. I have divided the tasks into "group A" and "group B" - because (in my mind at least), they are a bit different. Task Group A import data from a file and possibly reformat it - by reformatting, I mean doing things like santizing the data, possibly normalizing it and or running calculations on 'columns' of the data Import the munged data into a database. For now, I am mostly using mySQL for the vast majority of imports - although some files will be imported into a sqlLite database. Note: The files will be mostly text files, although some of the files are in a binary format (my own proprietary format, written by a C++ application I developed). Task Group B Extract data from the database Perform calculations on the data and either insert or update tables in the database. My coding experience is is primarily as a C/C++ developer, although I have been using PHP as well for the last 2 years or so. I am from a windows background so I am still finding my feet in the linux environment. My question is this - I need to write scripts to perform the tasks I described above. Although I suppose I could write a few C++ applications to be used in the shell scripts, I think it may be better to write them in a scripting language (maybe this is a flawed assumption?). My thinking is that it would be easier to modify thins in a script - no need to rebuild etc for changes to functionality. Additionally, C++ data munging in C++ tends to involve more lines of code than "natural" scripting languages such as Perl, Python etc. Assuming that the majority of people on here agree that scripting is the way to go, herein lies my dilema. Which scripting language to use to perform the tasks above (giving my background). My gut instinct tells me that Perl (shudder) would be the most obvious choice for performing all of the above tasks. BUT (and that is a big BUT). The mere mention of Perl makes my toes curl, as I had a very, very bag experience with it a while back. The syntax seems quite unnatural to me - despite how many times I have tried to learn it - so if possible, I would really like to give it a miss. PHP (which I already know), also am not sure is a good candidate for scripting on the CLI (I have not seen many examples on how to do this etc - so I may be wrong). The last thing I must mention is that IF I have to learn a new language in order to do this, I cannot afford (time constraint) to spend more than a day, in learning the key commands/features required in order to do this (I can always learn the details of the language later, once I have actually deployed the scripts). So, which scripting language would you recommend (PHP, Python, Perl, [insert your favorite here]) - and most importantly WHY?. Or, should I just stick to writing little C++ applications that I call in a shell script?. Lastly, if you have suggested a scripting language, can you please show with a FEW lines (Perl mongers - I'm looking in your direction [nothing to cryptic!] ;) ) how I can use the language you suggested to do what I want to do. Hopefully, the lines you present will convince me that it can be done easily and elegantly in the language you suggested.

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• How can I learn to effectively write Pythonic code?

  - by Matt Fenwick

  I'm tired of getting downvoted and/or semi-rude comments on my Python answers, saying things like "this isn't Pythonic" or "that's not the Python way of doing things". To clarify, I'm not tired of getting corrected and downvoted, and I'm not tired of being wrong: I'm tired of feeling like there's a whole field of Python that I know nothing about, and seems to be implicit knowledge of experienced Python programmers. Doing a google search for "Pythonic" reveals a wide range of interpretations. The wikipedia page says: A common neologism in the Python community is pythonic, which can have a wide range of meanings related to program style. To say that code is pythonic is to say that it uses Python idioms well, that it is natural or shows fluency in the language. Likewise, to say of an interface or language feature that it is pythonic is to say that it works well with Python idioms, that its use meshes well with the rest of the language. It also discusses the term "unpythonic": In contrast, a mark of unpythonic code is that it attempts to write C++ (or Lisp, Perl, or Java) code in Python—that is, provides a rough transcription rather than an idiomatic translation of forms from another language. The concept of pythonicity is tightly bound to Python's minimalist philosophy of readability and avoiding the "there's more than one way to do it" approach. Unreadable code or incomprehensible idioms are unpythonic. I suspect one way to learn the Pythonic way is just to program in Python a whole bunch. But I bet I could write a bunch of crap and not improve that much without some guidance, whereas a good resource might speed up the learning process significantly. PEP 8 might be exactly what I'm looking for, or maybe not. I'm not sure; on the one hand it covers a lot of ground, but on the other hand, I feel like it's more suited as a reference for knowledgeable programmers than a tutorial for fresh 'uns. How do I get my foot in the Pythonic/Python way of doing things door?

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• E: Sub-process /usr/bin/dpkg returned an error code (1)

  - by Joel

  I cant install or uppdate anything on my system 12.04 I get the error... installArchives() failed: dpkg: error processing libqt4-xmlpatterns (--configure): libqt4-xmlpatterns:amd64 4:4.8.1-0ubuntu4.2 cannot be configured because libqt4-xmlpatterns:i386 is in a different version (4:4.8.1-0ubuntu4.3) dpkg: error processing libqt4-xmlpatterns:i386 (--configure): libqt4-xmlpatterns:i386 4:4.8.1-0ubuntu4.3 cannot be configured because libqt4-xmlpatterns:amd64 is in a different version (4:4.8.1-0ubuntu4.2) dpkg: dependency problems prevent configuration of libqt4-declarative:i386: libqt4-declarative:i386 depends on libqt4-xmlpatterns (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-xmlpatterns:i386 is not configured yet. dpkg: error processing libqt4-declarative:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-declarative: libqt4-declarative depends on libqt4-xmlpatterns (= 4:4.8.1-0ubuntu4.3); however: Version of libqt4-xmlpatterns on system is 4:4.8.1-0ubuntu4.2. dpkg: error processing libqt4-declarative (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqtgui4:i386: libqtgui4:i386 depends on libqt4-declarative (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-declarative:i386 is not configured yet. dpkg: error processing libqtgui4:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqtgui4: No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already libqtgui4 depends on libqt4-declarative (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-declarative is not configured yet. dpkg: error processing libqtgui4 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-designer: libqt4-designer depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4 is not configured yet. dpkg: error processing libqt4-designer (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-designer:i386: libqt4-designer:i386 depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4:i386 is not configured yet. dpkg: error processing libqt4-designer:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-opengl: libqt4-opengl depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4 is not configured yet. dpkg: error processing libqt4-opengl (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-opengl:i386: libqt4-opengl:i386 depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4:i386 is not configured yet. dpkg: error processing libqt4-opengl:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-qt3support: libqt4-qt3support depends on libqt4-designer (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-designer is not configured yet. libqt4-qt3support depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4 is not configured yet. dpkg: error processing libqt4-qt3support (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-qt3support:i386: libqt4-qt3support:i386 depends on libqt4-designer (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-designer:i386 is not configured yet. libqt4-qt3support:i386 depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4:i386 is not configured yet. dpkg: error processing libqt4-qt3support:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-scripttools:i386: libqt4-scripttools:i386 depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4:i386 is not configured yet. dpkg: error processing libqt4-scripttools:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-svg: libqt4-svg depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4 is not configured yet. dpkg: error processing libqt4-svg (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-svg:i386: libqt4-svg:i386 depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4:i386 is not configured yet. dpkg: error processing libqt4-svg:i386 (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: libqt4-xmlpatterns libqt4-xmlpatterns:i386 libqt4-declarative:i386 libqt4-declarative libqtgui4:i386 libqtgui4 libqt4-designer libqt4-designer:i386 libqt4-opengl libqt4-opengl:i386 libqt4-qt3support libqt4-qt3support:i386 libqt4-scripttools:i386 libqt4-svg libqt4-svg:i386 Error in function: dpkg: dependency problems prevent configuration of libqt4-declarative: libqt4-declarative depends on libqt4-xmlpatterns (= 4:4.8.1-0ubuntu4.3); however: Version of libqt4-xmlpatterns on system is 4:4.8.1-0ubuntu4.2. dpkg: error processing libqt4-declarative (--configure): dependency problems - leaving unconfigured dpkg: error processing libqt4-xmlpatterns (--configure): libqt4-xmlpatterns:amd64 4:4.8.1-0ubuntu4.2 cannot be configured because libqt4-xmlpatterns:i386 is in a different version (4:4.8.1-0ubuntu4.3) dpkg: error processing libqt4-xmlpatterns:i386 (--configure): libqt4-xmlpatterns:i386 4:4.8.1-0ubuntu4.3 cannot be configured because libqt4-xmlpatterns:amd64 is in a different version (4:4.8.1-0ubuntu4.2) dpkg: dependency problems prevent configuration of libqtgui4: libqtgui4 depends on libqt4-declarative (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-declarative is not configured yet. dpkg: error processing libqtgui4 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-declarative:i386: libqt4-declarative:i386 depends on libqt4-xmlpatterns (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-xmlpatterns:i386 is not configured yet. dpkg: error processing libqt4-declarative:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-svg: libqt4-svg depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4 is not configured yet. dpkg: error processing libqt4-svg (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-opengl: libqt4-opengl depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4 is not configured yet. dpkg: error processing libqt4-opengl (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-designer: libqt4-designer depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4 is not configured yet. dpkg: error processing libqt4-designer (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-qt3support: libqt4-qt3support depends on libqt4-designer (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-designer is not configured yet. libqt4-qt3support depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4 is not configured yet. dpkg: error processing libqt4-qt3support (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqtgui4:i386: libqtgui4:i386 depends on libqt4-declarative (= 4:4.8.1-0ubuntu4.3); however: Package libqt4-declarative:i386 is not configured yet. dpkg: error processing libqtgui4:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-svg:i386: libqt4-svg:i386 depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4:i386 is not configured yet. dpkg: error processing libqt4-svg:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-opengl:i386: libqt4-opengl:i386 depends on libqtgui4 (= 4:4.8.1-0ubuntu4.3); however: Package libqtgui4:i386 is not configured yet. dpkg: error processing libqt4-opengl:i386 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libqt4-designer:i386: joel@Joel-PC:~$ sudo apt-get install -f [sudo] password for joel: Läser paketlistor... Färdig Bygger beroendeträd Läser tillståndsinformation... Färdig Korrigerar beroenden.... Färdig Följande paket har installerats automatiskt och är inte längre nödvändiga: kde-l10n-sv language-pack-kde-sv-base language-pack-kde-zh-hans-base calligra-l10n-engb calligra-l10n-sv calligra-l10n-zhcn language-pack-kde-en kde-l10n-engb language-pack-kde-sv language-pack-zh-hans-base kde-l10n-zhcn language-pack-zh-hans language-pack-kde-zh-hans language-pack-kde-en-base Använd "apt-get autoremove" för att ta bort dem. Följande ytterligare paket kommer att installeras: libqt4-xmlpatterns Följande paket kommer att uppgraderas: libqt4-xmlpatterns 1 att uppgradera, 0 att nyinstallera, 0 att ta bort och 22 att inte uppgradera. 15 är inte helt installerade eller borttagna. Behöver hämta 0 B/1 033 kB arkiv. Efter denna åtgärd kommer ytterligare 0 B utrymme användas på disken. Vill du fortsätta [J/n]? J dpkg: fel vid hantering av libqt4-xmlpatterns (--configure): libqt4-xmlpatterns:amd64 4:4.8.1-0ubuntu4.2 cannot be configured because libqt4-xmlpatterns:i386 is in a different version (4:4.8.1-0ubuntu4.3) dpkg: fel vid hantering av libqt4-xmlpatterns:i386 (--configure): libqt4-xmlpatterns:i386 4:4.8.1-0ubuntu4.3 cannot be configured because libqt4-xmlpatterns:amd64 is in a different version (4:4.8.1-0ubuntu4.2) dpkg: beroendeproblem förhindrar konfigurering av libqt4-declarative:i386: libqt4-declarative:i386 är beroende av libqt4-xmlpatterns (= 4:4.8.1-0ubuntu4.3), men: Paketet libqt4-xmlpatterns:i386 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-declarative:i386 (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-declarative: libqt4-declarative är beroende av libqt4-xmlpatterns (= 4:4.8.1-0ubuntu4.3), men: Versionen av libqt4-xmlpatterns på systemet är 4:4.8.1-0ubuntu4.2. dpkg: fel vid hantering av libqt4-declarative (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqtgui4:i386: libqtgui4:i386 är beroende av libqt4-declarative (= 4:4.8.1-0ubuntu4.3), men: Paketet libqt4-declarative:i386 har inte konfigurerats ännu. dpkg: fel vid hantering av libqtgui4:i386 (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar koIngen apport-rapport skrevs därför att felmeddelandet indikerar att det är ett efterföljande fel från ett tidigare problem. Ingen apport-rapport skrevs därför att felmeddelandet indikerar att det är ett efterföljande fel från ett tidigare problem. Ingen apport-rapport skrevs därför att felmeddelandet indikerar att det är ett efterföljande fel från ett tidigare problem. Ingen apport-rapport skrevs därför att felmeddelandet indikerar att det är ett efterföljande fel från ett tidigare problem. Ingen apport-rapport skrevs därför att felmeddelandet indikerar att det är ett efterföljande fel från ett tidigare problem. Ingen apport-rapport skrevs därför att felmeddelandet indikerar att det är ett efterföljande fel från ett tidigare problem. nfigurering av libqtgui4: libqtgui4 är beroende av libqt4-declarative (= 4:4.8.1-0ubuntu4.3), men: Paketet libqt4-declarative har inte konfigurerats ännu. dpkg: fel vid hantering av libqtgui4 (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-designer: libqt4-designer är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-designer (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-designer:i386: libqt4-designer:i386 är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4:i386 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-designer:i386 (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-opengl: libqt4-opengl är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-opengl (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-opengl:i386: libqt4-opengl:i386 är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4:i386 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-opengl:i386 (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-qt3support: libqt4-qt3support är beroende av libqt4-designer (= 4:4.8.1-0ubuntu4.3), men: Paketet libqt4-designer har inte konfigurerats ännu. libqt4-qt3support är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-qt3support (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-qt3support:i386: libqt4-qt3support:i386 är beroende av libqt4-designer (= 4:4.8.1-0ubuntu4.3), men: Paketet libqt4-designer:i386 har inte konfigurerats ännu. libqt4-qt3support:i386 är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4:i386 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-qt3support:i386 (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-scripttools:i386: libqt4-scripttools:i386 är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4:i386 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-scripttools:i386 (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-svg: libqt4-svg är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-svg (--configure): beroendeproblem - lämnar okonfigurerad dpkg: beroendeproblem förhindrar konfigurering av libqt4-svg:i386: libqt4-svg:i386 är beroende av libqtgui4 (= 4:4.8.1-0ubuntu4.3), men: Paketet libqtgui4:i386 har inte konfigurerats ännu. dpkg: fel vid hantering av libqt4-svg:i386 (--configure): beroendeproblem - lämnar okonfigurerad Fel uppstod vid hantering: libqt4-xmlpatterns libqt4-xmlpatterns:i386 libqt4-declarative:i386 libqt4-declarative libqtgui4:i386 libqtgui4 libqt4-designer libqt4-designer:i386 libqt4-opengl libqt4-opengl:i386 libqt4-qt3support libqt4-qt3support:i386 libqt4-scripttools:i386 libqt4-svg libqt4-svg:i386 E: Sub-process /usr/bin/dpkg returned an error code (1)

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• VLC 2.0.3 on Lubuntu 12.04: No audio?

  - by drezabek

  I am on Lubuntu 12.04, and I have installed VLC media player version 2.0.3. When I try and play an audio file, it appears to load fine, and the media position bar displays the progress, and it says it is playing, but I can't here any thing through my speakers. I can hear game audio, web audio, and audio from SMPlayer just fine, but with VLC, I can't here anything. Below is the "Messages" output with the verbosity option set to "2 (debug)" main debug: processing request item: The Bottom, node: Playlist, skip: 0 main debug: resyncing on The Bottom main debug: The Bottom is at 0 main debug: starting playback of the new playlist item main debug: resyncing on The Bottom main debug: The Bottom is at 0 main debug: creating new input thread main debug: Creating an input for 'The Bottom' main debug: TIMER input launching for 'Floex - Machinarium Soundtrack - 01 The Bottom.flac' : 23.706 ms - Total 23.706 ms / 1 intvls (Avg 23.706 ms) main debug: using timeshift granularity of 50 MiB, in path '/tmp' main debug: `file:///home/doug/Music/unsorted/Floex%20-%20Machinarium%20Soundtrack/Floex%20-%20Machinarium%20Soundtrack%20-%2001%20The%20Bottom.flac' gives access `file' demux `' path `/home/doug/Music/unsorted/Floex%20-%20Machinarium%20Soundtrack/Floex%20-%20Machinarium%20Soundtrack%20-%2001%20The%20Bottom.flac' main debug: creating demux: access='file' demux='' location='/home/doug/Music/unsorted/Floex%20-%20Machinarium%20Soundtrack/Floex%20-%20Machinarium%20Soundtrack%20-%2001%20The%20Bottom.flac' file='/home/doug/Music/unsorted/Floex - Machinarium Soundtrack/Floex - Machinarium Soundtrack - 01 The Bottom.flac' main debug: looking for access_demux module: 3 candidates main debug: no access_demux module matching "file" could be loaded main debug: TIMER module_need() : 2.332 ms - Total 2.332 ms / 1 intvls (Avg 2.332 ms) main debug: creating access 'file' location='/home/doug/Music/unsorted/Floex%20-%20Machinarium%20Soundtrack/Floex%20-%20Machinarium%20Soundtrack%20-%2001%20The%20Bottom.flac', path='/home/doug/Music/unsorted/Floex - Machinarium Soundtrack/Floex - Machinarium Soundtrack - 01 The Bottom.flac' main debug: looking for access module: 2 candidates filesystem debug: opening file `/home/doug/Music/unsorted/Floex - Machinarium Soundtrack/Floex - Machinarium Soundtrack - 01 The Bottom.flac' main debug: using access module "filesystem" main debug: TIMER module_need() : 0.762 ms - Total 0.762 ms / 1 intvls (Avg 0.762 ms) main debug: Using stream method for AStream* main debug: starting pre-buffering main debug: received first data after 0 ms main debug: pre-buffering done 1024 bytes in 0s - 43478 KiB/s main debug: looking for stream_filter module: 7 candidates main debug: no stream_filter module matching "any" could be loaded main debug: TIMER module_need() : 0.236 ms - Total 0.236 ms / 1 intvls (Avg 0.236 ms) main debug: looking for stream_filter module: 1 candidate main debug: using stream_filter module "stream_filter_record" main debug: TIMER module_need() : 0.156 ms - Total 0.156 ms / 1 intvls (Avg 0.156 ms) main debug: creating demux: access='file' demux='' location='/home/doug/Music/unsorted/Floex%20-%20Machinarium%20Soundtrack/Floex%20-%20Machinarium%20Soundtrack%20-%2001%20The%20Bottom.flac' file='/home/doug/Music/unsorted/Floex - Machinarium Soundtrack/Floex - Machinarium Soundtrack - 01 The Bottom.flac' main debug: looking for demux module: 54 candidates flacsys debug: Picture type=3 mime=image/png description='' file length=679371 qt4 debug: IM: Setting an input main debug: looking for packetizer module: 21 candidates main debug: using packetizer module "packetizer_flac" main debug: TIMER module_need() : 0.211 ms - Total 0.211 ms / 1 intvls (Avg 0.211 ms) main debug: using demux module "flacsys" main debug: TIMER module_need() : 4.023 ms - Total 4.023 ms / 1 intvls (Avg 4.023 ms) main debug: looking for a subtitle file in /home/doug/Music/unsorted/Floex - Machinarium Soundtrack/ main debug: looking for meta reader module: 2 candidates main debug: using meta reader module "taglib" main debug: TIMER module_need() : 5.245 ms - Total 5.245 ms / 1 intvls (Avg 5.245 ms) main debug: removing module "taglib" main debug: `file:///home/doug/Music/unsorted/Floex%20-%20Machinarium%20Soundtrack/Floex%20-%20Machinarium%20Soundtrack%20-%2001%20The%20Bottom.flac' successfully opened main debug: selecting program id=0 main debug: looking for decoder module: 30 candidates main debug: using decoder module "flac" main debug: TIMER module_need() : 0.442 ms - Total 0.442 ms / 1 intvls (Avg 0.442 ms) main debug: Buffering 0% flac debug: decode STREAMINFO flac debug: channels:2 samplerate:44100 bitspersamples:16 flac debug: STREAMINFO decoded main debug: Buffering 30% main debug: recycling audio output main debug: looking for audio output module: 3 candidates main debug: Buffering 61% pulse debug: using stereo channel map pulse debug: using library version 1.1.0 pulse debug: (compiled with version 1.1.0, protocol 26) main debug: Buffering 92% main debug: Stream buffering done (371 ms in 2 ms) pulse debug: connected locally to unix:/home/doug/.pulse/dce22254e867f905188a2ce200000003-runtime/native as client #14 pulse debug: using protocol 26, server protocol 26 pulse debug: using buffer metrics: maxlength=4194304, tlength=9880, prebuf=0, minreq=3528 pulse debug: connected to sink 0: alsa_output.pci-0000_00_14.2.analog-stereo main debug: using audio output module "pulse" main debug: TIMER module_need() : 4.571 ms - Total 4.571 ms / 1 intvls (Avg 4.571 ms) main debug: output 's16l' 44100 Hz Stereo frame=1 samples/4 bytes main debug: mixer 'f32l' 44100 Hz Stereo frame=1 samples/8 bytes main debug: filter(s) 'f32l'->'s16l' 44100 Hz->44100 Hz Stereo->Stereo main debug: looking for audio filter module: 14 candidates audio_format debug: f32l->s16l, bits per sample: 32->16 main debug: using audio filter module "audio_format" main debug: TIMER module_need() : 0.187 ms - Total 0.187 ms / 1 intvls (Avg 0.187 ms) main debug: conversion pipeline completed main debug: looking for audio mixer module: 2 candidates main debug: using audio mixer module "float32_mixer" main debug: TIMER module_need() : 0.125 ms - Total 0.125 ms / 1 intvls (Avg 0.125 ms) main debug: input 's16l' 44100 Hz Stereo frame=1 samples/4 bytes main debug: looking for audio filter module: 1 candidate scaletempo debug: format: 44100 rate, 2 nch, 4 bps, fl32 scaletempo debug: params: 30 stride, 0.200 overlap, 14 search scaletempo debug: 1.000 scale, 1323.000 stride_in, 1323 stride_out, 1059 standing, 264 overlap, 617 search, 2204 queue, fl32 mode main debug: using audio filter module "scaletempo" main debug: TIMER module_need() : 0.233 ms - Total 0.233 ms / 1 intvls (Avg 0.233 ms) main debug: filter(s) 's16l'->'f32l' 44100 Hz->44100 Hz Stereo->Stereo pulse debug: listing sink alsa_output.pci-0000_00_14.2.analog-stereo (0): Built-in Audio Analog Stereo main debug: looking for audio filter module: 14 candidates audio_format debug: s16l->f32l, bits per sample: 16->32 main debug: using audio filter module "audio_format" main debug: TIMER module_need() : 0.147 ms - Total 0.147 ms / 1 intvls (Avg 0.147 ms) main debug: conversion pipeline completed pulse debug: base volume: 65536 main debug: looking for audio filter module: 1 candidate equalizer debug: equalizer loaded for 44100 Hz with 10 bands 2 pass equalizer debug: 60 Hz -> factor:0.000000 alpha:0.003013 beta:0.993973 gamma:1.993901 equalizer debug: 170 Hz -> factor:0.000000 alpha:0.008490 beta:0.983019 gamma:1.982437 equalizer debug: 310 Hz -> factor:0.000000 alpha:0.015374 beta:0.969252 gamma:1.967331 equalizer debug: 600 Hz -> factor:0.000000 alpha:0.029328 beta:0.941343 gamma:1.934254 equalizer debug: 1000 Hz -> factor:0.000000 alpha:0.047918 beta:0.904163 gamma:1.884869 equalizer debug: 3000 Hz -> factor:0.000000 alpha:0.130408 beta:0.739184 gamma:1.582718 equalizer debug: 6000 Hz -> factor:0.000000 alpha:0.226555 beta:0.546889 gamma:1.015267 equalizer debug: 12000 Hz -> factor:0.000000 alpha:0.344937 beta:0.310127 gamma:-0.181410 equalizer debug: 14000 Hz -> factor:0.000000 alpha:0.366438 beta:0.267123 gamma:-0.521151 equalizer debug: 16000 Hz -> factor:0.000000 alpha:0.379009 beta:0.241981 gamma:-0.808451 main debug: using audio filter module "equalizer" main debug: TIMER module_need() : 0.353 ms - Total 0.353 ms / 1 intvls (Avg 0.353 ms) main debug: filter(s) 'f32l'->'f32l' 44100 Hz->44100 Hz Stereo->Stereo main debug: conversion pipeline completed main debug: looking for visualization2 module: 1 candidate main debug: looking for text renderer module: 2 candidates freetype debug: Building font databases. freetype debug: Took 0 microseconds freetype debug: Using Serif Bold as font from file /usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf freetype debug: using fontsize: 2 main debug: using text renderer module "freetype" main debug: TIMER module_need() : 3.278 ms - Total 3.278 ms / 1 intvls (Avg 3.278 ms) main debug: looking for video filter2 module: 18 candidates swscale debug: 32x32 chroma: YUVA -> 16x16 chroma: RGBA with scaling using Bicubic (good quality) main debug: using video filter2 module "swscale" main debug: TIMER module_need() : 1.037 ms - Total 1.037 ms / 1 intvls (Avg 1.037 ms) main debug: looking for video filter2 module: 18 candidates yuvp debug: YUVP to YUVA converter main debug: using video filter2 module "yuvp" main debug: TIMER module_need() : 0.156 ms - Total 0.156 ms / 1 intvls (Avg 0.156 ms) main debug: Deinterlacing available main debug: deinterlace 0, mode blend, is_needed 0 main debug: Opening vout display wrapper main debug: looking for vout display module: 6 candidates main debug: looking for vout window xid module: 4 candidates qt4 debug: requesting video... qt4 debug: Video was requested 0, 0 main debug: using vout window xid module "qt4" main debug: TIMER module_need() : 61.671 ms - Total 61.671 ms / 1 intvls (Avg 61.671 ms) main debug: looking for inhibit module: 2 candidates main debug: using inhibit module "xdg_screensaver" main debug: TIMER module_need() : 0.336 ms - Total 0.336 ms / 1 intvls (Avg 0.336 ms) xdg_screensaver debug: started xdg-screensaver (PID = 6682) xcb_xv debug: connected to X11.0 server xcb_xv debug: vendor : The X.Org Foundation xcb_xv debug: version: 11103000 xcb_xv debug: using screen 0x15a xcb_xv debug: using XVideo extension v2.2 xcb_xv debug: using adaptor NV17 Video Texture xcb_xv debug: using port 310 xcb_xv debug: using image format 0x30323449 xcb_xv debug: using X11 visual ID 0x21 (depth: 24) xcb_xv debug: using X11 window 0x03400000 xcb_xv debug: using X11 graphic context 0x03400002 main debug: VoutDisplayEvent 'fullscreen' 0 main debug: VoutDisplayEvent 'resize' 800x500 window main debug: using vout display module "xcb_xv" main debug: TIMER module_need() : 69.890 ms - Total 69.890 ms / 1 intvls (Avg 69.890 ms) main debug: original format sz 800x500, of (0,0), vsz 800x500, 4cc I420, sar 1:1, msk r0x0 g0x0 b0x0 main debug: removing module "freetype" main debug: looking for text renderer module: 2 candidates freetype debug: Building font databases. freetype debug: Took 0 microseconds freetype debug: Using Serif Bold as font from file /usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf freetype debug: using fontsize: 2 main debug: using text renderer module "freetype" main debug: TIMER module_need() : 4.552 ms - Total 4.552 ms / 1 intvls (Avg 4.552 ms) main debug: using visualization2 module "visual" main debug: TIMER module_need() : 84.104 ms - Total 84.104 ms / 1 intvls (Avg 84.104 ms) main debug: filter(s) 'f32l'->'f32l' 44100 Hz->44100 Hz Stereo->Stereo main debug: conversion pipeline completed main debug: filter(s) 'f32l'->'f32l' 44100 Hz->44100 Hz Stereo->Stereo main debug: conversion pipeline completed main debug: filter(s) 'f32l'->'f32l' 48510 Hz->44100 Hz Stereo->Stereo main debug: looking for audio filter module: 14 candidates main debug: using audio filter module "samplerate" main debug: TIMER module_need() : 0.375 ms - Total 0.375 ms / 1 intvls (Avg 0.375 ms) main debug: conversion pipeline completed main debug: End of audio preroll main debug: Decoder buffering done in 91 ms main warning: PTS is out of range (-9269), dropping buffer pulse debug: deferring start (190703 us) main debug: looking for video blending module: 1 candidate main debug: using video blending module "blend" main debug: TIMER module_need() : 0.275 ms - Total 0.275 ms / 1 intvls (Avg 0.275 ms) main debug: Detected interlaced video main debug: deinterlace 0, mode blend, is_needed 1 xcb_xv debug: display is visible pulse debug: starting deferred pulse warning: too late by 93760 us pulse debug: changed sample rate to 44186 Hz pulse debug: started pulse warning: too late by 94474 us pulse debug: changed sample rate to 44229 Hz pulse warning: too late by 93532 us pulse debug: changed sample rate to 44272 Hz pulse warning: too late by 92829 us pulse debug: changed sample rate to 44315 Hz pulse warning: too late by 92132 us pulse debug: changed sample rate to 44358 Hz xcb_xv debug: display is visible pulse warning: too late by 91534 us pulse debug: changed sample rate to 44401 Hz xcb_xv debug: display is visible pulse warning: too late by 89482 us pulse debug: changed sample rate to 44440 Hz xcb_xv debug: display is visible xcb_xv debug: display is visible pulse warning: too late by 87529 us pulse debug: changed sample rate to 44479 Hz pulse warning: too late by 84577 us pulse debug: changed sample rate to 44504 Hz main debug: auto hiding mouse cursor pulse warning: too late by 78562 us pulse debug: changed sample rate to 44492 Hz pulse warning: too late by 68015 us pulse debug: changed sample rate to 44422 Hz xcb_xv debug: display is visible xcb_xv debug: display is visible xcb_xv debug: display is visible xcb_xv debug: display is visible main debug: auto hiding mouse cursor pulse debug: changed sample rate to 44336 Hz xcb_xv debug: display is visible xcb_xv debug: display is visible xcb_xv debug: display is visible main debug: auto hiding mouse cursor I have had issues with VLC in the past- the audio quality was extremely crackly, as if the headphone jack was plugged in only half way, and the sounds were extremely sharp and caused my speakers to make a ringing/vibrating noise... It would eventually start working after I messed around with the audio settings, but it happened every restart. I eventually switched to SMPlayer, but now I need some of the features that VLC offers, but I still can't use VLC. At this point, the audio can not be heard at all, and the method I used before, messing around with the audio settings, isn't getting me anywhere. (note, I reposted this on VideoLan's forums, link is here: http://forum.videolan.org/viewtopic.php?f=13&t=104726) Please let me know if you need more information, or are confused by something I posted! Thanks!

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• C# via Java: Introduction

  - by simonc

  Originally posted on: http://geekswithblogs.net/simonc/archive/2013/11/08/c-via-java-introduction.aspxSo, I've recently changed jobs. Rather than working in .NET land, I've migrated over to Java land. But never fear! I'll continue to peer under the covers of .NET, but my next series will use my new experience in Java to explore the design decisions made in the development of the C# programming language. After all, the design of C# was based on Java 1.2, and both languages have continued to evolve since then, incorporating modern software engineering concepts and requirements. Exploring the differences and similarities between the two will (hopefully) give us a deeper understanding into why .NET is implemented the way it is, the trade-offs involved, and what choices were made when new features were designed and added to the language and framework. Among others, I'll be looking at differences in: Primitives Operators Generics Exceptions Accessibility Collections Delegates and inner classes Concurrency In my next post, I'll start off by looking at the type primitives available in each language, and how Java and C# actually incorporate two different concepts of primitive types in their fundamental language design and use. I'm also thinking of looking at the inner details of Java and the JVM in my blogs, as well as C# and the CLR. If you've got any comments or thoughts on this, please let me know.

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• C# via Java: Introduction

  - by Simon Cooper

  So, I’ve recently changed jobs. Rather than working in .NET land, I’ve migrated over to Java land. But never fear! I’ll continue to peer under the covers of .NET, but my next series will use my new experience in Java to explore the design decisions made in the development of the C# programming language. After all, the design of C# was based on Java 1.2, and both languages have continued to evolve since then, incorporating modern software engineering concepts and requirements. Exploring the differences and similarities between the two will (hopefully) give us a deeper understanding into why .NET is implemented the way it is, the trade-offs involved, and what choices were made when new features were designed and added to the language and framework. Among others, I’ll be looking at differences in: Primitives Operators Generics Exceptions Accessibility Collections Delegates and inner classes Concurrency In my next post, I’ll start off by looking at the type primitives available in each language, and how Java and C# actually incorporate two different concepts of primitive types in their fundamental language design and use. I’m also thinking of looking at the inner details of Java and the JVM in my blogs, as well as C# and the CLR. If you’ve got any comments or thoughts on this, please let me know.

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• First time application where to start?

  - by Nazariy

  After many years of searches and copy pasting, I'm still looking for simple solution that can transliterate text input on the fly from one key set to another. There are quite few online services that provide this feature but it still quite annoying to go online all the time. Unfortunately there is not that many applications left which are capable of doing so, and none of them supported by this day. I decided to make my own and at same time to learn something new for my self. The idea is quite simple: application should sit in system tray and wait until input language get changed, for example to Russian. If Russian language is activated, application should start to listen for user key strokes combination and replace them based on custom dictionary for example R = ?, SH = ? etc. I should be able to bind application to any installed language (Russian, Ukrainian, Bulgarian, Belarusian etc.) and customise dictionary for any of them. So my question is: Which language should I chose for this task C++, C# or might be something hardcore like Assembler, as application should work natively with Windows XP/Vista/7 or possibly Mac. (cross platform support is good but my main target is Windows) Due to nature of application behaviour how can I tell anti-virus software that it is not a "Key Logger" and basically not a virus? Where should I start and what should I be aware of? P.S. My current programming knowledge is quite basic, PHP and JavaScript with Object Oriented approach.

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• Choosing a web development framework?

  - by Bob

  So, I've sort of reached a point where I want to start developing a website. Originally, I planned to build said website using PHP and CodeIgniter, I'm familiar with both, but, truth be told, I'm not too fond of either. I find they just get rather messy, CodeIgniter helps somewhat, but no matter what, it seems that most PHP comes out more obfuscated than it has to be. Anyways, I've come to the point where I want to either use Python or Ruby. I'm familiar in both, though more so towards Python, but I've never done any web development in them. I'll take the necessary time to learn the frameworks (and further my knowledge in the language of my choosing), but I need to choose one. I don't like either language more than the other, they both have their benefits... However, since I've never done any web development with either language, I was hoping that you guys could give me some pointers. What are the available frameworks for each language? What do you recommend and why? Note: I've primarily looked into Rails and Django - but I'm still open to others. I'm looking for one that will work for just one (or maybe two) developers. It has to be fairly easy to learn (but I will take the time to learn it). Also, I'd like it to easily support clean code and agile development.

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• Ruby or Python?

  - by Bobby Tables

  Hi all, This question is extremely subjective and open-ended. It might even sound like something I should just research for myself and make my own decision. But I'd like to put it out there and get some thoughts from others. Long story short - I burned out with the rat race and am on a self-funded sabbatical this year. Much of it is to take a break from the corporate grind and travel around, but I also want to play around with new technologies and do some self-learning projects, to stay up to speed on programming, and well - I just love tinkering with programming, when there's no pressure! Here's the thing: I am a lifetime C/C++/Java programmer. I'm a bit of a squiggly bracket snob since I've been working with this family of languages for my entire programming career. So I'd like to learn a language which isn't so closely syntactically related to this group. What I'm basically looking for is a language which is relatively general purpose, fun to learn, has some new concepts that are different from C++/Java, and has a good community. A secondary consideration is that it has good web development frameworks. A tertiary consideration is that it's not totally academic (read: there are real world jobs out there using it). I've narrowed it down to Ruby or Python. My impression of Ruby is that it is extremely web oriented - that the only real application of it is as a server side scripting language for doing web stuff (mainly Ruby on Rails). For Python I'm not so sure. TL;DR and to put it as succinctly as possible: which of these would be better for a C++/Java guy to learn to get some new perspectives on programming? And which is more open and general purpose and applicable to a wider set of applications? I'm leaning towards Ruby at the moment, but I worry to an extent that it looks like it's used as nothing but a server side web language.

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• UPDATE MANAGER UNABLE TO UPDATE

  - by muguro

  Requires installation of untrusted packages The action would require the installation of packages from not authenticated sources. i get this error every time i try updating. the system shows that it has 466 updates but fails after clicking update more details have this accountsservice apparmor apport apport-gtk apt apt-transport-https apt-utils aptdaemon aptdaemon-data at-spi2-core bamfdaemon base-files bcmwl-kernel-source bind9-host compiz compiz-core compiz-gnome compiz-plugins-default cron cups cups-bsd cups-client cups-common cups-filters cups-ppdc dbus dbus-x11 dconf-gsettings-backend dconf-service desktop-file-utils dmsetup dnsutils empathy empathy-common eog evince evince-common evolution-data-server evolution-data-server-common firefox firefox-globalmenu firefox-gnome-support firefox-locale-en fontconfig fontconfig-config fonts-liberation fonts-opensymbol foomatic-filters gcalctool gdb ghostscript ghostscript-cups ghostscript-x ginn gir1.2-atspi-2.0 gir1.2-dbusmenu-glib-0.4 gir1.2-dbusmenu-gtk-0.4 gir1.2-gst-plugins-base-0.10 gir1.2-gtk-3.0 gir1.2-gtksource-3.0 gir1.2-gudev-1.0 gir1.2-javascriptcoregtk-3.0 gir1.2-launchpad-integration-3.0 gir1.2-pango-1.0 gir1.2-rb-3.0 gir1.2-totem-1.0 gir1.2-ubuntuoneui-3.0 gir1.2-unity-5.0 gir1.2-webkit-3.0 glib-networking glib-networking-common glib-networking-services gnome-accessibility-themes gnome-control-center gnome-control-center-data gnome-desktop3-data gnome-games-data gnome-icon-theme gnome-media gnome-orca gnome-settings-daemon gnome-sudoku gnomine gnupg google-talkplugin gpgv grub-common grub-pc grub-pc-bin grub2-common gstreamer0.10-alsa gstreamer0.10-plugins-base gstreamer0.10-plugins-base-apps gstreamer0.10-x gvfs gvfs-backends gvfs-bin gvfs-common gvfs-daemons gvfs-fuse gvfs-libs gwibber gwibber-service gwibber-service-facebook gwibber-service-identica gwibber-service-twitter hdparm hplip hplip-data indicator-sound initscripts isc-dhcp-client isc-dhcp-common jockey-common jockey-gtk krb5-locales landscape-client-ui-install language-pack-en language-pack-en-base language-pack-gnome-en language-pack-gnome-en-base launchpad-integration libaccountsservice0 libapt-inst1.4 libapt-pkg4.12 libart-2.0-2 libasound2 libatspi2.0-0 libbamf0 libbamf3-0 libbind9-80 libc-bin libc-dev-bin libc6 libc6-dev libcairo-gobject2 libcairo2

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• GDM locale problems

  - by Simón

  I have two problems with GDM on Ubuntu 10.04. The first is with locales. In my system I have defined: $ cat /etc/environment PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" LANG="es_ES.UTF-8" LANGUAGE="es_ES:es:en_US:en" $ cat /etc/default/locale LANG="es_ES.UTF-8" LANGUAGE="es_ES:es:en_US:en" $ cat /var/lib/locales/supported.d/local es_ES UTF-8 es_ES.UTF-8 UTF-8 en_US UTF-8 en_US.UTF-8 UTF-8 But when I enter in gnome desktop: $ locale LANG=es_ES LANGUAGE=es_ES:es:en_US:en LC_CTYPE="es_ES" LC_NUMERIC="es_ES" LC_TIME="es_ES" LC_COLLATE="es_ES" LC_MONETARY="es_ES" LC_MESSAGES="es_ES" LC_PAPER="es_ES" LC_NAME="es_ES" LC_ADDRESS="es_ES" LC_TELEPHONE="es_ES" LC_MEASUREMENT="es_ES" LC_IDENTIFICATION="es_ES" LC_ALL= I have deleted ~/.dmrc and I have restarted the system but nothing. GDM login screen also doesn't permit change this setting. However, in the text terminals (tty1,...): $ locale LANG=es_ES.UTF-8 LANGUAGE=es_ES:es:en_US:en LC_CTYPE="es_ES.UTF-8" LC_NUMERIC="es_ES.UTF-8" LC_TIME="es_ES.UTF-8" LC_COLLATE="es_ES.UTF-8" LC_MONETARY="es_ES.UTF-8" LC_MESSAGES="es_ES.UTF-8" LC_PAPER="es_ES.UTF-8" LC_NAME="es_ES.UTF-8" LC_ADDRESS="es_ES.UTF-8" LC_TELEPHONE="es_ES.UTF-8" LC_MEASUREMENT="es_ES.UTF-8" LC_IDENTIFICATION="es_ES.UTF-8" LC_ALL= The solution to problem is to edit .drmc file, but I think this isn't the right way. Why doesn't GDM read/apply the system locales? Why don't I see, in GDM login screen, the box to change the locale?

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• What triggered the popularity of lambda functions in modern mainstream programming languages?

  - by Giorgio

  In the last few years anonymous functions (AKA lambda functions) have become a very popular language construct and almost every major / mainstream programming language has introduced them or is planned to introduce them in an upcoming revision of the standard. Yet, anonymous functions are a very old and very well-known concept in Mathematics and Computer Science (invented by the mathematician Alonzo Church around 1936, and used by the Lisp programming language since 1958, see e.g. here). So why didn't today's mainstream programming languages (many of which originated 15 to 20 years ago) support lambda functions from the very beginning and only introduced them later? And what triggered the massive adoption of anonymous functions in the last few years? Is there some specific event, new requirement or programming technique that started this phenomenon? IMPORTANT NOTE The focus of this question is the introduction of anonymous functions in modern, main-stream (and therefore, maybe with a few exceptions, non functional) languages. Also, note that anonymous functions (blocks) are present in Smalltalk, which is not a functional language, and that normal named functions have been present even in procedural languages like C and Pascal for a long time. Please do not overgeneralize your answers by speaking about "the adoption of the functional paradigm and its benefits", because this is not the topic of the question.

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• Making Multilingual J! 1.5 + + Joomfish + VM 1.17 more workable

  - by rhand

  I have been working with a multilingual Joomla! 1.5.23 e-commerce website for a client for quite a while and made several customizations. But the client is still not happy he has to adjust content at at least three locations: Joomfish Virtuemart Article Manager Joomfish is nice in the way that it allows you to create multilingual content and copy and paste the source language on the same page, which makes translation work easier but it is annoying in the way you have to edit several custom fields at different locations/ content types. As Joomla! source language content still needs to be created in the article manager first this is the second location the client has to work at. The third location is Virtuemart. Here all the products and product categories are created. And here we added some custom fields as well. Now I was considering upgrading the website to Joomla 1.7 or later on to 1.8. This J! versions have better multilingual support. But I wonder if er can really make the client's life easier. We will still have to copy the source language to a new article and create content in another language. We will still have the issue of content in custom fields that needs to be translated and we will still have to create content. Should I go for another CMS such as Magento or do you think there is a way in a more recent Joomla! version to work with all content in one or max two locations?

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• Programming languages with a Lisp-like syntax extension mechanism

  - by Giorgio

  I have only a limited knowledge of Lisp (trying to learn a bit in my free time) but as far as I understand Lisp macros allow to introduce new language constructs and syntax by describing them in Lisp itself. This means that a new construct can be added as a library, without changing the Lisp compiler / interpreter. This approach is very different from that of other programming languages. E.g., if I wanted to extend Pascal with a new kind of loop or some particular idiom I would have to extend the syntax and semantics of the language and then implement that new feature in the compiler. Are there other programming languages outside the Lisp family (i.e. apart from Common Lisp, Scheme, Clojure (?), Racket (?), etc) that offer a similar possibility to extend the language within the language itself? EDIT Please, avoid extended discussion and be specific in your answers. Instead of a long list of programming languages that can be extended in some way or another, I would like to understand from a conceptual point of view what is specific to Lisp macros as an extension mechanism, and which non-Lisp programming languages offer some concept that is close to them.

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• Fastest way to parse big json android

  - by jem88

  I've a doubt that doesn't let me sleep! :D I'm currently working with big json files, with many levels. I parse these object using the 'default' android way, so I read the response with a ByteArrayOutputStream, get a string and create a JSONObject from the string. All fine here. Now, I've to parse the content of the json to get the objects of my interest, and I really can't find a better way that parse it manually, like this: String status = jsonObject.getString("status"); Boolean isLogged = jsonObject.getBoolean("is_logged"); ArrayList<Genre> genresList = new ArrayList<Genre>(); // Get jsonObject with genres JSONObject jObjGenres = jsonObject.getJSONObject("genres"); // Instantiate an iterator on jsonObject keys Iterator<?> keys = jObjGenres.keys(); // Iterate on keys while( keys.hasNext() ) { String key = (String) keys.next(); JSONObject jObjGenre = jObjGenres.getJSONObject(key); // Create genre object Genre genre = new Genre( jObjGenre.getInt("id_genre"), jObjGenre.getString("string"), jObjGenre.getString("icon") ); genresList.add(genre); } // Get languages list JSONObject jObjLanguages = jsonObject.getJSONObject("languages"); Iterator jLangKey = jObjLanguages.keys(); List<Language> langList = new ArrayList<Language>(); while (jLangKey.hasNext()) { // Iterate on jlangKey obj String key = (String) jLangKey.next(); JSONObject jCurrentLang = (JSONObject) jObjLanguages.get(key); Language lang = new Language( jCurrentLang.getString("id_lang"), jCurrentLang.getString("name"), jCurrentLang.getString("code"), jCurrentLang.getString("active").equals("1") ); langList.add(lang); } I think this is really ugly, frustrating, timewaster, and fragile. I've seen parser like json-smart and Gson... but seems difficult to parse a json with many levels, and get the objects! But I guess that must be a better way... Any idea? Every suggestion will be really appreciated. Thanks in advance!

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• More Denali Execution Plan Warning Goodies

  - by Dave Ballantyne

  In my last blog, I showed how the execution plan in denali has been enhanced by 2 new warnings ,conversion affecting cardinality and conversion affecting seek, which are shown when a data type conversion has happened either implicitly or explicitly. That is not all though, there is more .  Also added are two warnings when performance has been affected due to memory issues. Memory spills to tempdb are a costly operation and happen when SqlServer is under memory pressure and needs to free some up. For a long time you have been able to see these as warnings in a profiler trace as a sort or hash warning event,  but now they are included right in the execution plan.  Not only that but also you can see which operator caused the spill , not just which statement.  Pretty damn handy. Another cause of performance problems relating to memory are memory grant waits.  Here is an informative write up on them,  but simply speaking , SQLServer has to allocate a certain amount of memory for each statement. If it is unable to you get a “memory grant wait”.  Once again there are other methods of analyzing these,  but the plan now shows these too. Don't worry that’s not real production code There is one other new warning that is of interest to me, “Unmatched Indexes”.  Once I find out the conditions under which that fires ill blog about it.

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• What's so great about Clojure?

  - by marco-fiset

  I've been taking a look at Clojure lately and I stumbled upon this post on Stackoverflow that indicates some projects following best practices, and overall good Clojure code. I wanted to get my head around the language after reading some basic tutorials so I took a look at some "real-world" projects. After looking at ClojureScript and Compojure (two the the aforementioned "good" projects), I just feel like Clojure is a joke. I don't understand why someone would pick Clojure over say, Ruby or Python, two languages that I love and have such a clean syntax and are very easy to pick up whereas Clojure uses so much parenthesis and symbols everywhere that it ruins the readability for me. I think that Ruby and Python are beautiful, readable and elegant. They are easy to read even for someone who does not know the language inside out. However, Clojure is opaque to me and I feel like I must know every tiny detail about the language implementation in order to be able to understand any code. So please, enlighten me! What is so good about Clojure? What is the absolute minimum that I should know about the language in order to appreciate it?

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• Google Currency Convertor JSON API

  - by Gopinath

  There are many live currency conversion services available on the web and the popular one’s among them are – Google, Yahoo, MSN & XE. Among all these four Google is the developer’s darling and it provides a simple JSON API that can be integrated in your applications.  http://www.google.com/ig/calculator?hl=en&q=1USD=?INR Using the API is very simple and it takes two parameters as input. The first parameter “hl” is the language code in which you want output. The second parameter “q” is the conversion query in the format <number><from currency code>=?<to currency code>. In the URL give above the query requests for conversion of 1 USD in INR. JSON output for the above query would be  similar to {lhs: "1 U.S. dollar",rhs: "54.4602984 Indian rupees",error: "",icc: true} Examples: 100 USD in INR  http://www.google.com/ig/calculator?hl=en&q=100USD=?INR Example 2: 1 GBP in INR http://www.google.com/ig/calculator?hl=en&q=1GBP=?INR Example 3: 1 USD in INR, output the data in French language http://www.google.com/ig/calculator?hl=fr&q=1USD=?INR   This is an undocumented service and expect changes at any time. But as long as it works, you got a programmatic way to convert currencies.

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