Subject line says it all. What's next on your list of things to tackle and get to grips with? Got a language you want to learn? Want to grok dynamic programming? Think it's about time you understood type theory?
What's next? And why?
More Python and Django.
Currently at top of the list: jQuery
Functional Programming, mainly Haskell.
I'm armed with GNU Emacs (with Haskell Mode), the online version of Real World Haskell  and the GHC and I'm ready to get stuck in. http://book.realworldhaskell.org/read/
Unit Testing, because I think I should. I really need to stop putting this off.
Also as chakrit mentioned, more Django, because I've enjoyed the little I have done.
More about UTF-8, because I find it interesting.
Cocoa, Objective C
For me it is a better understanding of LINQ, jQuery and MVC
Ruby on Rails. Because it's about as far as I could get from my current skill set without becoming a Haskell programmer or something.
Lisp and Haskell. Lisp macros seem to be mind-blowingly powerful.
I really want to do something with C#, if only I had enough time.
I just started reading "Code Complete" after reading many positive reviews on SO.
For me it's SOA
For me, Lua or Erlang will be next.
Get a vacation long enough to get an REALLY interesting book
If only I found the time now...
just one last game, gotta beat the highscore  http://www.handdrawngames.com/DesktopTD/Game.asp
Windows Power Shell
Functional programming, specifically F#. F# is the first one I've played around with that has enough library support (via .NET) to make it worth my effort.
I just started reading The Art of Multiprocessor Programming by Herlihy and Shavit. Heavy duty concurrent programming, updated for modern hardware.
Lisp. I took a class in college, and I've been meaning to get back to it ever since. I finally have a project or two on the horizon that use lisp as a scripting language, so I've finally got the excuse.
Much more EMACS...
I can't really rely on TextMate anymore. It's awesome, but it's only for Mac.
jQuery, ASP.NET MVC, and Cocoa/Objective-C
English Grammar... :(
Specifically, learning enough of the symbols and the names of different types of math that I can decide which bit of math I need to know about to do whatever jobs come up. At the moment, the door is closed because I don't speak the lingo.
Learning how to lead. I already know how and why to write unit tests, but getting the rest of my team on board is a totally different matter. Same for decent comments, documentation, etc. etc.
How to use the advanced features of c#
How to use DirectX to speed up some image processing
I can spell SQL - I need to learn database technology. My team uses it every day and I don't grok it near enough.
Obscure bug at work is pushing me to learn strace, tcpdump, signals, poll, and such like.
C++ and the STL. My knowledge in the area is limited to the academic stuff. As someone in the C# / .NET side of things, it'd kind of nice not being hand-held through non-trivial tasks. :)
iPhone Programming !
The single most important determinant of future income is the incomes of the five people you associate most with.
Also, dealing with people is fun.
Lisp and assembly (any arch), but not necessarily in that order.
Lisp, mainly because of all of the things I've heard about it (being a "powerful" language per Paul Graham, being a "must-learn" language per ESR, etc.)
Assembly, because I believe it will give me a new perspective on programming. Not to mention allowing me to do programming that is "closer to the hardware" than I can with C.
To be even more self-disciplined.
To stay with the thinking of the best.
To eschew mediocrity.
How to balance family time and computer time.
I started learning Haskell and so far it's real fun. I must admit it takes some time to get used to it (20 years of imperative coding getting in the way) but even the most trivial programs are pretty rewarding when they compile the first time (and run as expected!). I pretty much feel like the young me learning his first programming language again... The other big topic for me at the moment is design, i think there's a lot to learn for many programmers.
Assembly, C, math.
Photography. Looks like fun.
DirectX 10.1 and 11 when it comes out. New rendering pipeline looks awesome.
N2. It's an open source, ASP.NET MVC enabled CMS.
Better understanding of OO programming. C++. Security. Struts/Hibernate/Spring.
Smalltalk, Objective-C and SOA Best Pratice. Ok I know , I'm a bit spreaded out
A more solid knowledge of the most widely used design patterns.
More Design Patterns
and after that
I hope this is the right order to do it...
Haskell, Smalltalk, ML, Nemerle, Boo... pretty much a whole bunch of interesting languages.
Lisp. I have played around a bit with Practical Common Lisp  and the language fascinates me to no end. Even if I never use it for a real project I have the distinct feeling that learning Lisp will make me a better programmer in other languages as well.
Also, hardware! I love building software but I would love to learn how to build some custom hardware for it. From simple controllers to home automation. For example, I have written a jukebox daemon  not unlike MPD that runs on my home server (absolute alpha quality but hey, it works for me). I'd like to build a small "box" that can listen to an IceCast stream and output to my stereo. I'd like to build some sort of remote control for it, etcetera. I've been looking at Arduino to see if that can serve me.
DDD (Domain Driven Design). I have played with various MVC frameworks, most of which ape RoR and ActiveRecord. But I have the feeling that ActiveRecord is breaking down when the application becomes more complex. So, I have been reading up a bit about DDD, DataMappers, etcetera. This probably also means trying out something like Zend Framework in the near future. http://www.gigamonkeys.com/book/
Just Started Perl a few weeks back, so next to learn is.... more Perl!
I'm gonna need to learn it for my network engineering & security analysis course anyway.
I want to learn:
I can already see that this will be a fun year:D
Erlang, Scala, Haskell (I think it's obvious why).
jQuery (I tried some mixed flash/JS-frameworks but they are as broken as Flash is; YUI is good also, but it takes a little too long to do small things with it).
Patience and understanding... :P
let me see :
Grails -> done
Grok -> done
Javafx-> done GWT -> useless but done
New stuff I'd like to learn is jQuery and Ruby on Rails, along with improving my understanding of everything else, specifically ASP MVC.NET and Linq.
As a programmer with no CS degree here's my list:
A- For academic reasons:
3- How compilers work (probably build one myself) 4- C/C++ (Build a device driver)
5- Code Complete (well, not a technology by itself, but I think it's mandatory to study it.
5- More Algebra
B- For Business Needs:
3- ASP.NET MVC
4- WF/ WCF/ WPF
and the list continues ... !
Forth! Am I the only one? (:
how to build a compiler
In no particular order:
SCRUM SCRUM SCRUM
I'm just coming back to programming after a loooooong break (doing sysadmin and business stuff) and I'm learning Java for a possible job, but I'd like to learn C, to get me as close as possible to the machine (without getting spattered with grease, like you do with Assembly! I'm too old for Assembly...)
Silverlight, XNA and WPF
Django, because there might be some money in it for me.
Embedded microprocessor programming, because I love writing code that affects things in the physical world. I've got a Teensy++  sitting on my desk, blinking out Morse code now. Now to wire up an LCD and some servos. http://www.pjrc.com/teensy/index.html
My Computer Science education was fairly strong on the "computer science" part, a bit light on the math part, and left the applied stuff (learning and using specific languages and technologies) to us.
My learning cycle is a balance of these three things. This is my first year as a professional programmer, and I've found myself in a world I never expected: web development. While I was busy completing CS assignments in C++, the web was becoming a legitimate application platform, and one where SO much new development (and, thus, new job opportunities) is focused.
So, my learning list looks like this:
1. Sharpening PHP/MySQL skills to advanced levels, learning jQuery and AJAX
2. Going back through my old CS textbooks, reading other "classic" CS texts that I didn't get in school
3. Re-learning the math I either forgot or never really knew before. :)
I think this balance is good for my long-term development.
parallel programming and cloud computing
F#, jQuery, Lua and MVC. I also have some books on string/text algorithms that I'd like to finish off.
Definately some more on collaborative work - subversion got me a taste for more team based programming.
Object-C with some Cocoa
Writing a basic language. The primary goal of being to better understand compiler theory and to gain insight into how to write many of the constructs I use every day. Also, it would just be really cool to play around with my own language.
Python, Django, and Jquery. I would also like to learn about cryptology (Reading Applied Cryptography by Bruce Schneier right now).
jQuery, ASP.NET MVC, Silverlight / WPF, Workflow Foundation
C, C++, JQuery and Ruby.
Design Pattern Silverlight MVC,also living the life better :)
Primarily I want to learn to manage my time more effectively, because right now it seems to me that there are not enough hours in a day, and not enough days in a week!!
Then I'd like to learn Python, and perhaps work a little more with WPF.
TDD and C#.
Even if I plan to migrate to Linux... :) Yes, probably, I'm a masochist.
JQuery, Maven, JBoss ESB, and C#
For me on top of the list is Linq, JQuery, ASP.NET AJAX
Better parallel programming techniques like hybrid OpenMP/MPI since it will be the best way to cope with future architectures.
Ada: I have just started using it at work for the project I am on. I will be working in Ada for about the next 2 years so my feet should be pretty wet in it once this project is done.
And to think, my Comp Sci buddies and I used to joke that we should write a wrapper around Java called AdaWeb. It would be the next big thing, secure, reliable, and now with more WEB! Of course the joke is on me now that they have a bridge between Ada and Java allowing you to call Java from Ada  ;-) http://www.adahome.com/Tutorials/Lovelace/java.htm
Ryan Dahl's Node.js . Easily one of the most brilliant new projects in years to address the concurrency issue, in particular with I/O. I'm interested mainly because of how easy he's managed to make evented I/O seem. http://nodejs.org/
Drupal, PHP, and jQuery
deeper C++, master degree php, beginner ASM, APIs in general, XML, complexe mathematics... hash algos
Where to start? There's a ton of interesting stuff out there. Scala and Clojure are at the top of my list since I'm a java fan now. Android development seems really interesting too. I've always wanted to do 3D programming so OpenGL is on the list as far as general programming interests.
It will be exciting to play around with Closures when Java 7 comes out, but I don't expect it will take very long to learn them.
RIA frameworks like Flex and JavaFX
My current objective is learn how to manage software requirements (functional and non-functional) as well as estimate development time better.
After all these years of working I'm still getting 200% more time than originally estimated to get things done and I'm still accepting confusing (and even paradoxal) software requirements - and my team is suffering with it.
I kept wondering if there was a language / concept / anything out there which can be used as a silver bullet to my problem but instead of going to code books I have to resort to project management books.
python,django and JQuery
I need to get a good grasp of the concepts to be able to implement it in my current working enviromnent.
functional programming and related math
Marketing, Communications (speaking at conferences), stockmarket analysis, and Erlang :)
I'm afraid Windows Presentation Foundation is the next step for me. I say "afraid" because what I need to do with it is an extremely non-trivial reimplementation of the software I've been developing over the last 3 years. I know enough about WPF at this point to know how much I have to learn before I can do this with a reasonable expectation of success.
SQL stuff, Django, PHP - Just web programming in general.
Ruby and Linux
In to learn in no order:
things to forget
php and java
MVC JQuery and F#
like many others it seems :)
My next big thing is jQuery. I really jazzed the Microsoft is going to start including this technology in Visual Studio Scott Gu's Blog about jQuery and Microsoft . Obviously it's important.
With jQuery I'm learning how to build something big with MVC. I'm beyond the examples and need the tough problem to help advance my knowledge. http://weblogs.asp.net/scottgu/archive/2008/09/28/jquery-and-microsoft.aspx
Sadly, it has to be Sharepoint. We are doing an implementation of that at our shop. I would much rather spend the time on LINQ-to-SQL.
Closures and Erlang
Programming wise: ASP.Net MVC and WCF. Operating System: Linux, just to play around with a distro and see how well it runs for me. General technology: Virtualization.
This is ignoring the things currently in my doing list like Sitecore.
Grails and Groovy
Jquery, Python, Unit Testing, and .net 3.5 related things (and some 2.0 related things, actually). As for order, Python I'm trying to pick up on my own. Jquery I want to use at work; unit testing is about becoming a better developer and the .net stuff is because we're a .net house and we might be migrating forward in the near future and I want to stay up on things.
jQuery and Python for me.
WCF because it's the wave of the future...
WPF and WTL (basically both ends of the desktop UI dev spectrum)
WPF and jQuery in ASP.NET!
Edit ~ I forgot Adobe Air, I've been meaning to get to this for a while.
Which language - Why?
Python - used at work, powerful, expressive, GoogleAppEngine
Groovy - full Java API, some momentum behind it
Objective-C - iPhone Apps
C#/.NET - Want to know what all the fuss is about, Visual Studio Express is free, Used at work.
My perennial "wish I knew better" was Lisp. But I've almost never had a project where Lisp would have made it sufficiently easier & less time consuming than, say, C++, to justify me learning it.
F# sounds moderately interesting and in the same category as Lisp, but with the added hassle of .NET libraries.
Other than that, I'm exploring data mining as a hobby, and I am reading about professional level software engineering to prepare my grad student-y self for the business world.
I'm definitely going to learn more about JQuery + Grails and maybe some Django if I have time to spare :)
I'd like to do more with Python perhaps some dabbling in Django as well.
Ruby on Rails, or Silverlight. Coin flip as soon as I finish Head First C#.