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  • C++ for Ruby scripters

    - by Aaron Cohen
    I am a fairly capable Ruby scripter/programmer, but have been feeling pressure to branch out into C++. I haven't been able to find any sites along the lines of "C++ for Ruby Programmers". This site exists for Python (which is quite similar, I know). Does anyone know of a guide that can help me translate my Ruby 'thoughts' into C++?

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  • Introduction to midi programming

    - by bobobobo
    So I have a little (musical) keyboard that has USB midi interface. I know you can program to this (many programs accept input from the midi device via USB interface) but where do you begin to program a midi device? Ideally I'm looking for a platform-independent api, through Python or something.

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  • Django model help

    - by dotty
    Does anyone have any clue why this doesn't work as expected. If i use the python shell and do team.game_set or team.games It returns an error AttributeError: 'Team' object has no attribute 'game' If i create a Game object and call game.home_team it returns the correct team object Heres my model class Team(models.Model): name = models.CharField(blank=True, max_length=100) class Game(models.Model): home_team = models.ForeignKey(Team, related_name="home_team")

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  • str.format() does not work, keyError

    - by Dor
    The following code raise a keyError exception: addr_list_formatted = [] addr_list_idx = 0 for addr in addr_list: # addr_list is a list addr_list_idx = addr_list_idx + 1 addr_list_formatted.append(""" "{0}" { "gamedir" "str" "address" "{1}" } """.format(addr_list_idx, addr)) Why? Using python 3.1. Thanks.

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  • ASP.NET Free Online E-books or tutorials

    - by the_drow
    I need to learn programming ASP.NET with C# but I can't find a good online book to do so. Is there an ASP.NET equivalent to Diving into python? All of the books are quite expensive. I already know Java and C++, are there any major differences between them and C#? If so are there materials that cover only the differences and what I should learn?

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  • How to add django-db-log models to admin panel?

    - by Enchantner
    Just installed django-db-log module and trying to make it work properly. 'python manage.py syncdb' command created databases, it seems like logging works, but there is nothing about it in admin panel. As I found in documentation, it should add itself in admin panel without any additional configuration, but then I added 'djangodblog.middleware.DBLogMiddleware' in MIDDLEWARE_CLASSES and 'djangodblog' in INSTALLED_APPS it looks like nothing happens. What I'm doing wrong?

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  • Real-time equalizer for all audio on computer

    - by greye
    Is it possible to capture all the sound from a computer and have it pass through a equalizer before reaching the speakers? How can you program a band pass filter on it? EDIT: I'm trying to get this on Windows (with Python? heh) but if there is a generic, cross-platform approach that would be great.

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  • zfs pool error, how to determine which drive failed in the past

    - by Kendrick
    I had been copying data from my pool so that I could rebuild it with a different version so that I could go away from solaris 11 and to one that is portable between freebsd/openindia etc. it was copying at 20mb a sec the other day which is about all my desktop drive can handle writing from the network. suddently lastnight it went down to 1.4mb i ran zpool status today and got this. pool: store state: ONLINE status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. action: Determine if the device needs to be replaced, and clear the errors using 'zpool clear' or replace the device with 'zpool replace'. see: http://www.sun.com/msg/ZFS-8000-9P scan: none requested config: NAME STATE READ WRITE CKSUM store ONLINE 0 0 0 raidz1-0 ONLINE 0 0 0 c8t3d0p0 ONLINE 0 0 2 c8t4d0p0 ONLINE 0 0 10 c8t2d0p0 ONLINE 0 0 0 it is currently a 3 x1tb drive array. what tools would best be used to determine what the error was and which drive is failing. per the admin doc The second section of the configuration output displays error statistics. These errors are divided into three categories: READ – I/O errors occurred while issuing a read request. WRITE – I/O errors occurred while issuing a write request. CKSUM – Checksum errors. The device returned corrupted data as the result of a read request. it was saying low counts could be any thing from a power flux to a disk event but gave no suggestions as to what tools to check and determine with.

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  • Bpm audio detection Library

    - by user58815
    I'm looking for a library that simplify tempo/bpm audio detection. Something similar to this http://adionsoft.net/bpm/ , but to use on *NIX machines. Any language, but preference goes to php, perl, python.

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  • Exhaustive (or even just large) list of languages/stacks used for popular sites?

    - by jacko
    As a result of a conversation with a colleague today, I've been searching (unsuccessfully) for a large'ish list of what technology stacks are being used popular websites and standalone applications today. We're aware of the big ones like Facebook (php/ ), Twitter (scala/cassandra), Youtube (python/?), Digg (php/cassandra), stackoverflow (.net mvc/sqlserver), but we're looking for a more complete list. It would also be interesting to hear about any stats for desktop apps also? Can anyone help?

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  • Tried to install Mint to a Flash Drive. Now I can't boot from the main hard disk.

    - by Dan
    Hello, all. I'm kind of new to Linux and I need some help. I wanted to install a Linux distro to a flash drive so that I can have a portable OS with all my settings, programs, etc. wherever I go. So I fired up a Linux Mint Live CD and installed Mint to the flash drive, and this seems to work OK. But now, whenever I try to boot up my system normally without the flash drive plugged in, it doesn't seem to work. It basically hangs for a bit, and then I get the following prompt: error: no such device: (some long hex val) grub rescue> However, when I try powering my system up when the USB is plugged into the computer, it gives me an option between using the OS installed on my USB and the OS installed on my HD. Selecting the latter, everything loads up just fine. I'm guessing that installing Mint to the flash drive somehow messed with my native Grub installation, but, again, I'm kind of new to Linux, so I'm not sure exactly why. Any help is greatly appreciated.

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  • webapp and django framework

    - by Joel
    As far as I understand, the "Getting Started" guide of GAE with Python uses the webapp framework. However, it seems like it uses Django to render templates. Does that mean that I can use the Django template engine without using its application framework?

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  • How to sleep computer via batch file?

    - by Saebin
    So I want to make a batch file that will sleep my computer after a period of time. The closest thing I have found is placing it in standby, but seems to work differently then the sleep button on my keyboard (longer bootup, doesn't wake on mouse click). Any ideas? Would it be easier in python or c#?

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  • How do I write a bash script to restart a process if it dies?

    - by Tom
    I have a python script that'll be checking a queue and performing an action on each item: # checkqueue.py while True: check_queue() do_something() How do I write a bash script that will check if it's running, and if not, start it. Roughly the following pseudo code (or maybe it should do something like ps | grep?): # keepalivescript.sh if processidfile exists: if processid is running: exit, all ok run checkqueue.py write processid to processidfile I'll call that from a crontab: # crontab */5 * * * * /path/to/keepalivescript.sh Thanks in advance.

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  • regular expression with special chars

    - by xRobot
    I need a regular expression to validate string with one or more of these characters: a-z A-Z ' àòèéùì simple white space FOR EXAMPLE these string are valide: D' argon calabrò maryòn l' Ancol these string are NOT valide: hello38239 my_house work [tab] with me I tryed this: re.match(r"^[a-zA-Z 'òàèéìù]+$", self.cleaned_data['title'].strip()) It seems to work in my python shell but in Django I get this error: SyntaxError at /home/ ("Non-ASCII character '\\xc3' ... Why ?

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  • Fastest way to find the largest power of 10 smaller than x

    - by peoro
    Is there any fast way to find the largest power of 10 smaller than a given number? I'm using this algorithm, at the moment, but something inside myself dies anytime I see it: 10**( int( math.log10(x) ) ) # python pow( 10, (int) log10(x) ) // C I could implement simple log10 and pow functions for my problems with one loop each, but still I'm wondering if there is some bit magic for decimal numbers.

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  • plug-in architecture based c/c++ application

    - by SepiDev
    I need to know how to start writing an application based on plug-in architecture. I mean how to write a base code an let others develop the application by adding the plug-ins they write. I know that there is some problems in doing such in c++. most people use another language such as python to add plug-ins to their c++ application.

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  • Generate T-SQL for Existing Indexes

    - by Chris S
    How do you programmatically generate T-SQL CREATE statements for existing indexes in a database? SQL Studio provides a "Script Index as-Create to" command that generates code in the form: IF NOT EXISTS(SELECT * FROM sys.indexes WHERE name = N'IX_myindex') CREATE NONCLUSTERED INDEX [IX_myindex] ON [dbo].[mytable] ( [my_id] ASC )WITH (SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF) ON [PRIMARY] GO How would you do this programmatically (ideally through Python)?

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  • Where to start when getting into web application development

    - by Aaron
    I am looking to get into web application development. I am an undergrad CS major with experience in programming desktop apps, but with only basic knowledge regarding how web apps work. Any suggestions of where to start? Javascript, php, perl, ruby, python? Should I look into frameworks like django, seaside, ruby on rails, etc at first or wait until I am more experienced to use those?

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  • Can't start my phpMyAdmin

    - by vrynxzent
    i am creating my own portable server but i can't make it to run the phpMyAdmin, the mysql, php and apache is running except for phpMyAdmin. When i check Apache's error log, it states [Fri Nov 09 08:54:37 2012] [warn] pid file F:/Drive WebServer/Drive WebServer/bin/Debug/Apache2bak/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run? PHP Warning: PHP Startup: Unable to load dynamic library './php_mysql.dll' - The specified module could not be found.\r\n in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './php_mysqli.dll' - The specified module could not be found.\r\n in Unknown on line 0 [Fri Nov 09 08:54:37 2012] [notice] Apache/2.0.64 (Win32) PHP/5.2.17 configured -- resuming normal operations [Fri Nov 09 08:54:37 2012] [notice] Server built: Oct 18 2010 01:36:23 [Fri Nov 09 08:54:37 2012] [notice] Parent: Created child process 6784 i manually assign the exact path for this F:/php/ext/php_mysql.dll PHP Warning: PHP Startup: Unable to load dynamic library 'F:/php/ext/php_mysql.dll' - The specified module could not be found.\r\n in Unknown on line 0 but still the same error. i set this option in php.ini extension_dir = "./" another error goes pops out It says libmysql.dll is missing. PHP Version : 5.2.17 Any help would be appreciated. ;)

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  • How do I collect a bunch of Django abstract models in a QuerySet?

    - by Thierry Lam
    I have the following abstract Django models: class Food(models.Model): name = models.CharField(max_length=100) class Meta: abstract = True In one of my view, I created a bunch of Food model: panino = Food(name='Panino') poutine = Food(name='Poutine') food = [panino, poutine] From the above, I'm not saving the model and storing the Food model in a regular Python list. I want to store the above food models in a QuerySet object. How can I do that without storing any data to the database?

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