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• Testing + production server and syncing MySQL data

  - by Matthew

  I have a web application running on LAMP with a testing server and a production server. Is there a standard practice for keeping the data on the testing server in sync with the production server? The data on the testing server gets out of date pretty quick and I feel like there must be an easier way than just dumping the production server and copying it onto the testing server every so often. It's not important that the data is in total sync, just that the testing server represents the production enviornment as accurately as possible.

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• Is there a way to download the Apache C++ Standard Library User Guide?

  - by viksit

  I couldn't find a download-to-print version of the Apache C++ Standard Library User Guide anywhere - the only options available are the frames and no-frames versions online. Writing a script to wget and collate them seems overkill. Does anyone know if a downloadable PDF or other format exists - and if not, why not?

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• Rails - best way to display code only in production?

  - by jyoseph

  I have a few pieces of code that I would like to display only in production, for instance, the showing of disqus comments. What is the best way to go about doing that? Currently I have: <% if RAILS_ENV.eql?('production') %> disqus code here <% end %> But I am not sure if that's the best method, or is that it? Seems pretty verbose and I would need this in a few different places in the application.

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• vim is not obeying command aliases

  - by Nadal

  I use bash on mac and one of the aliases is like this alias gitlog='git --no-pager log -n 20 --pretty=format:%h%x09%an%x09%ad%x09%s --date=short --no-merges' However when I do :! gitlog I get /bin/bash: gitlog: command not found I know I can add aliases like this in my .gitconfig [alias] co = checkout st = status ci = commit br = branch df = diff However I don't want to add all my bash aliases to .gitconfig. That is not DRY. Is there a better solution?

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• How do I output coloured text to a Linux terminal?

  - by Macha

  How do I print coloured characters to a Linux terminal that supports it? I'm using C++ for this program, but I think that might be irrelevant. EDIT: And secondly, how do I tell if it supports colour codes?

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• Javascript equivalent of Python's iterkeys() dictionary method

  - by saltycrane

  In Python I can use the iterkeys() method to iterate over the keys of a dictionary. For example: mydict = {'a': [3,5,6,43,3,6,3,], 'b': [87,65,3,45,7,8], 'c': [34,57,8,9,9,2],} for k in mydict.iterkeys(): print k gives me: a c b How can I do something similar in Javascript?

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• node to traverse cannot be null (Hibernate SQL)

  - by tiswas

  I'm performing a SQL query through hibernate, which looks like: SELECT thi FROM track_history_items thi JOIN artists art ON thi.artist_id = art.id WHERE thi.type = "TrackBroadcast" GROUP BY art.name ORDER thi.createdAt DESC but I'm getting the message that 'Node to traverse cannot be null!'. Anyone know what could be causing this? --EDIT-- I'm pretty sure that this problem is being caused by the possibility of artist_id to be null. However, I can't prevent this, so can I just skip the rows track_history_item rows which have a null artist_id?

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• Windows is not passing command line arguments to Python programs executed from the shell.

  - by mckoss

  I'm having trouble getting command line arguments passed to Python programs if I try to execute them directly as executable commands from a Windows command shell. For example, if I have this program (test.py): import sys print "Args: %r" % sys.argv[1:] And execute: >test foo Args: [] as compared to: >python test.py foo Args: ['foo'] My configuration has: PATH=...;C:\python25;... PATHEXT=...;.PY;.... >assoc .py .py=Python.File >ftype | grep Python Python.CompiledFile="C:\Python25\python.exe" "%1" %* Python.File="C:\Python25\python.exe" "%1" %* Python.NoConFile="C:\Python25\pythonw.exe" "%1" %*

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• Javascript Alert Return value / Event

  - by Chris

  Hey, The question is pretty simple, but i'm not the big AJAX/JS coder, so I have no clue if it's possible. Is there any way that I can check whether or not an alert() was executed on a remote site? Like if I inputted an alert("Welcome to this site"); through a get variable, is there any way to check if it that alert() was actually executed in the browser? And not necessarily through AJAX/JS.

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• Expand Drupal menu by default

  - by Dan G

  For the menu system, is there a way to set one of the menu items to be expanded by default? I can't get my home menu item to be expanded on the homepage (at the least), and I'd like it to be expanded whenever one of the other ones isn't. I'm using Drupal 5, and the Taxonomy Menu module. Taxonomy Menu is pretty good with 95% of my pages, but some are static "About Us" type pages, which I'd like to have the home menu as default for, and then there's the homepage.

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• AppleScript Editor, write message to the "Result" window

  - by Patrick

  I am using the Mac OS X Apple Script Editor and (while debugging) instead of writing a lot of display dialog statements, I'd like to write the results of some calculation in the window below, called "Result" (I have the German UI here, so the translation is a guess). So is there a write/print statement that I can use for putting messages in the "standard out" window? I am not asking to put the messages in a logfile on the file system, it is purely temporary.

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• ASP.NET - Update progress while processing data

  - by Danny

  Hope I can explain this correctly. I have a process, that outputs step by step messages (i.e., Processing item 1... Error in item 2 etc etc). I want this to be outputted to the user during the process, and not at the end. I pretty sure i need to do this with threading, but can't find a decent example. Thanks in advanced.

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• How to get path to the installed GIT in Python?

  - by Vladimir Prudnikov

  I need to get a path to the GIT on Max OS X 10.6 using Python 2.6.1 into script variables. I use this code for that: r = subprocess.Popen(shlex.split("which git"), stdout=subprocess.PIPE) print r.stdout.read() but the problem is that output is empty (I tried stderr too). It works fine with another commands such as pwd or ls. Can anyone help me with that?

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• rsyncing - ignoring checksums

  - by paulj3000

  Trying to copy a bunch of data over and time, unfortunately, is of the essence. I'd like to do an rsync of all the data in one direction, pretty much rsync just clobbers what's over on the destination server. Is there a way to do an rsync and just say, "overwrite all files" Is there a better way of doing this? We're talking 500GB of data that only has to go in one direction.

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• Extracting user-friendly exception details in Java

  - by Jon

  I've got a J2EE web application that I'm working on and when an exception occurs, I'd like to get some basic details about the exception and log it. The message that I'm logging should be pretty basic, something that might mean something to the people running the web server(s). Would using e.getMessage() be the best thing to log? Thanks.

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• Why can't I access the instance.__class__ attribute in Python?

  - by froadie

  I'm new to Python, and I know I must be missing something pretty simple, but why doesn't this very, very simple code work? class myClass: pass testObject = myClass print testObject.__class__ I get the following error: AttributeError: class myClass has no attribute '__class__' Doesn't every object in Python have a __class__ attribute?

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• Executing JavaScript with Python without X.

  - by Thomas

  I want to parse a html-page that unfortunately requires JavaScript to show any content. In order to do so I use a small python-script that pulls the html-code of the page, but after that I have to execute the JavaScript in a DOM-context which seems pretty hard. To make it even harder I want to use it in a server environment that has no X11-server. Note: I already read about http://code.google.com/p/pywebkitgtk/ but it seems to need a X-server.

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• Where does User.Identity data come from?

  - by niaher

  For example: if I am retrieving User.Identity.Name, does it come from .ASPXAUTH cookie or is retrieved from the database using my membership provider? Are any database requests made when I access User.Identity? Thanks. EDIT: Right now I am pretty sure it comes from an authentication ticket cookie, but can't find any official documentation to confirm this. Anyone?

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• Python: Multi list comprehension, is there such an unwieldy beast of prey ?

  - by bandana

  consider the following python 'code'. it demonstrates the concept of a multi-list comprehension: start = ['a', 'b', 'c'] middle = ['r', 'a', 'a'] finish = ['t', 'r', 't'] l = [s.upper() + m + f for s in start, m in middle, e in finish] >>> print l ['Art', 'Bar', 'Cat'] Alas, the above code does not work in python. What would be a good approximation of multi-list comprehension in python? Please discuss what happens when the lists have different lengths.

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• Creating "GDP in 1960" variable from GDP variables for different years

  - by Tom Smith

  Hi all, I'm pretty new to stata... I have a set of observations of the form "Country GDP Year". I want to create a new variable GDP1960, which gives the GDP in 1960 of each country for each year: USA $100m 1960 USA $100m 1960 $100m USA $200m 1965 --> USA $200m 1965 $100m Canada $60m 1960 Canada $60m 1960 $60m What's the right syntax to make this happen? (I assume egen is involved in some mysterious way)

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• VS 2008 Code Snippet Indentation

  - by Daniel

  In VS 2008, there are XML code snippets that seem to be pretty awesome :) However, it seems that the snippets we created do not indent properly. For example if we have the following code: { ... { ... { InsertSnippet here. We get something like: { ... { ... { FirstLineofSnippet SecondLineOfSnippet ThirdLineOfSnippet Is there any way to make it so that all lines keep the same indentation?

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• Google app engine How to count SUM from datestore?

  - by Alon

  Hey, Im wondering, how can i get a SUM of a rating entity i get from the datastore (python)? should i: ratingsum = 0 for rating in ratings: ratingsum + rating print ratingsum ?

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• Best way to represent a 2-D array in C++ with size determined at run time

  - by Tristan Havelick

  In C++ I'd like to do something like: int n = get_int_from_user(); char* matrix = new char[n][n]; matrix[0][0] = 'c'; //... matrix[n][n] = 'a'; delete [][] matrix; but of course this doesn't work. What is the best way to do something similar? I've seen some solutions to this but they seem pretty messy.

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• In terms of User Interface Design and methodologies what areas of research stand out the most?

  - by Dan

  Hi I'm pretty new to UI designing and was wondering what methodologies/ stuff to think about etc stand out as being useful. I'm interested in common design principles, laws that apply for human computer interaction, i've heard of one that applies to the spacing of buttons and other GUI objects etc. Thanks for any replies.

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• Is there a way that I can force mod_perl to re-use buffer memory?

  - by Pavel Georgiev

  Hi, I have a Perl script running in mod_perl that needs to write a large amount of data to the client, possibly over a long period. The behavior that I observe is that once I print and flush something, the buffer memory is not reclaimed even though I rflush (I know this can't be reclaimed back by the OS). Is that how mod_perl operates and is there a way that I can force it to periodically free the buffer memory, so that I can use that for new buffers instead of taking more from the OS?

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