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What Programming Languages Should You Learn Next?

simoniker writes "Over at Dobbs Code Talk, Chris Diggins has been discussing programming languages beyond C++ or Java, suggesting options such as Ruby ('does a great job of showing how powerful a dynamic language can be, and leverages powerful ideas from Smalltalk, Perl, and Lisp') but suggesting Scala as a first choice ('Very accessible to programmers from different backgrounds.') What would your choice be for programmers extending beyond their normal boundaries?"

38 of 759 comments (clear)

  1. Wrong Question by jellomizer · · Score: 5, Insightful

    The question is flawed. Anyone worth their weight as a programmer doesn't care what language they
    program in but. But Programing Methodoligy should they work with. Assuming that you use to
    Object Orianted Languages (C++, Java, .NET) which are a deveation of Procedural Based Languges (C,
    Pascal, FORTRAN). So after knowing those methodoligies perhaps you should study functional languages
    (LISP, SCHEME, HASCAL) or Logic Based Languges (Prolog).

    Procedural and Object Orianted languges tend to have the most programmers and is widly used

    Functional comes next used in some Sciencetific applications as well handling a lot of AI type stuff.

    Logical Lanagues are used less frequently because it is very tight sometimes too tight to expand into
    a full application.

    But most good programmers with experience in these languge classes are not normally worried about what
    to program in. They may have their personal favorates but, can code sucessfully in any language
    even if they never coded in it before. Because once you understand the classes the rest is just a
    google search from finding the right command and syntax of the languge.

    For example some differences between procedural Languges

            FORTRAN
                    IF (X .EQ. 1) THEN
                    END IF

            VB
                    If (x = 1) then
                    end if

            C
                    if (x==1) {
                    }

            Python
                    if x == 1: ... ...
            BASIC
                    IF ($X = 1) THEN
                    END

    Wow there are 5 different languges and they all look simular almost anyone would be able to figure it out

    --
    If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    1. Re:Wrong Question by ucblockhead · · Score: 5, Insightful

      Well...programmers usually care what languages they know when it comes to writing their resume. So while in one sense, you are current, in the career advancement sense, I'd go by what they want on Monster.com: (Java, Javascript, C, C++, Python, Perl, PHP.) True, any good programmer could pick any of those up in a few months (except maybe C++) but HR drones don't know that.

      When I went to school, we were taught all these methodologies. (Though in my case I'm so old that OO programming was too new to be well taught.) I'd hope your average programmer would know them all before getting that first job. Sadly, I get the feeling I am mistaken.

      But in general, I'd say, for instance, to use Javascript rather than Lisp as a functional language...not because it is better...not hardly...but because it is very marketable. (And sadly, most people with Javascript on their resumes have no clue it is anything but a Java clone.)

      --
      The cake is a pie
    2. Re:Wrong Question by MrEkted · · Score: 5, Interesting

      If you've never checked out Erlang, I recommend it. I've programmed seriously in at least a dozen languages, but this one really made me think. It has sophistication in concurrent programming that I've not seen before. Plus, there's a great movie!

      --
      Tell the moon dogs, tell the March hare
    3. Re:Wrong Question by jellomizer · · Score: 5, Funny

      PRINT *, 'What is wrong with using FORTRAN 77? It is a perfectly fine lan'//
          1 'guage that offers the flexiblity for all generations.'
          PRINT *, 'Where else can I write code that will run on todays system and '//
          1 'still be able to back it up on punch cards for safe keeping that wil'//
          2 'l last for decades'
      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    4. Re:Wrong Question by abigor · · Score: 4, Interesting

      Yup, I'll second this. Parallel programming is going to be a HUGE deal in coming years, and current languages don't handle it well - threading is complicated and prone to errors, leading to product delays. Erlang handles parallelism very elegantly and in a low-fault manner, as it must as it's used in critical telecoms applications. Unfortunately, the language also has a high barrier to entry as it is not Algol-based (like C, C++, Java, etc. are).

    5. Re:Wrong Question by EWIPlayer · · Score: 5, Insightful

      I'm sorry, but the parent comment is a bit "out there". If you had said something like, "Programmers don't care what language they program in, so long as they only want to be coding in one language just like they're coding in any other language", then maybe. But come on... It's talk like that which makes completely mediocre programmers. Do you know how long it takes to become truly proficient in C++ and OOP? Do you honestly want to tell me that you can come from Java (which doesn't destructors, for example) and simply apply your OO Java programming to C++ and be "good"?

      Different languages exist because language A does not do what language B does. And, yes, they can contain a ton of the same kind of idea, which is exactly the reason you need to become highly proficient in them to get anything real out of them. You need to explore the differences not the similarities. I have worked with enough mediocre programmers and enough non-designers in my life, thanks very much. I want people to get deeper, very very deep into alternate languages so that they can broaden their thinking, not just their basic language skill set.

      Learning a new language has little to do with that language and more to do with learning new ways of thinking. When I interview people that say that have any OO language, I grill them on OO more than I do on the intricacies of Java interfaces or C++ memory management. How you think is much more important to me than how many times it takes you to successfully compile a file.

      --
      This sig used to be really funny...
    6. Re:Wrong Question by idontgno · · Score: 4, Funny

      Agreed. It's a sad day on /. when I look at purported code examples and say to myself "Hmph. BASIC poser."

      "BASIC poser" may be the saddest phrase in the geek sublanguage of the English language.

      --
      Welcome to the Panopticon. Used to be a prison, now it's your home.
    7. Re:Wrong Question by krog · · Score: 4, Informative

      Functional languages seek to express all operations as a chain of functions which operate on data and return other data. "Function" is used in its mathematical sense here. Purely functional languages discourage state, and don't allow mutable variables. The lack of state and mutability give rise to some power; effortless parallelizability, for instance.

      Logic languages are something different altogether. They provide a framework for defining the rules of a system, then searching for answers which fit the given rules. Logic programming is not useful for general-purpose tasks, but can hugely reduce programming time in tasks which are difficult to solve any other way.

    8. Re:Wrong Question by rijrunner · · Score: 4, Insightful


      There is another aspect to this.

      Just learning a language is somewhat pointless. What are you learning the language for? Some languages do some things better than others. Some languages have entire corners of uses that many people never use.

      If you are just going out and writing the same app in a different language, who cares? A lot of web stuff, it is irrelevant whether you use php, java, or whatever.

      My first answer to the question "What would your choice be for programmers extending beyond their normal boundaries?" would be "quit writing the same crap".

      If you've been writing cgi scripts, write a device driver. And use a language appropriate for it. If you're been writing the newest game that will blow everyone's socks off, write a Database app. Push your goals out there and the rest will follow. Stretch your goals into looking at the end goal and weighing the options in languages to get there. If all you are doing is jumping language to language at the same playground level, you're wasting your time. Languages are just a tool to build something, so build something. Something you have never done before. Unless your compiler is less than 20k in size, odds are you haven't explored a fraction of the versatility of the language you are using.

      Bite off more than you can chew.

  2. Specialization Versus Breadth by eldavojohn · · Score: 5, Insightful

    I seem to be at odds here with this mentality.

    Stepping outside your comfort zone is a great thing if you have the time or need to do it. Me, I learned scheme & lisp, prolog, a number of instruction set languages and various scripting languages in my undergrad. Because I needed to see what it was like in realms other than Java & C++.

    However, these days, I spend my free time looking at frameworks for the latter two languages. Do I want to know Ruby? Sure. But it's not going to make me better at my job. My employer has me jumping from JBoss to Weblogic to Websphere to Jetty to Glassfish to ... whatever's under the sun for application container and all the while I'm trying to be an expert at Maven (which seems limitless) and Ant so I can do a decent job building. Not to mention the UI aspects: JSF, Tiles, Javascript, AJAX, DHTML, JSPs, JSeamless, Flex, GWT ... they just go on and on.

    I hate to say it but this specialization programming and time spent with other people's frameworks and libraries seems to make me more valuable in my own realm. You're right, it's a good idea for me to pick up Ruby (or whatever I'm supposed to learn next) because Java is not going to be around forever. But honestly, I feel a lot of people around me could stop re-inventing the wheel week after week at work and just take a couple days to tweak someone else's solution to work.

    That said, Lisp & Prolog were my most favorite and least practical languages I've learned (I think Lisp stands for Lost In Stupid Parentheses).

    I guess my answer to your question just another question: "What is your motive for learning a new language?" If it's to broaden your view of the world, go with something out of left field. If it's to be more valuable or better at what you do in Java, C++, Pearl, etc then I would actually tell you to start learning how everyone uses those languages.

    Honestly, a lot of the older coders I know just don't have the time. The company will both pay for and tell them what they need to learn next or they ain't learning anything at all.

    --
    My work here is dung.
    1. Re:Specialization Versus Breadth by Z-MaxX · · Score: 4, Interesting

      Do I want to know Ruby? Sure. But it's not going to make me better at my job. My employer has me jumping from JBoss to Weblogic to Websphere to Jetty to Glassfish to ... whatever's under the sun for application container and all the while I'm trying to be an expert at Maven (which seems limitless) and Ant so I can do a decent job building. Not to mention the UI aspects: JSF, Tiles, Javascript, AJAX, DHTML, JSPs, JSeamless, Flex, GWT ... they just go on and on.
      ...
      Honestly, a lot of the older coders I know just don't have the time. The company will both pay for and tell them what they need to learn next or they ain't learning anything at all. This sounds like a case of picking a tool and then trying to apply it to your problem--and switching to another tool one whenever something "new" and "cool" comes out--which is totally bass-ackwards.

      By having a breadth of knowledge and skills, you can make informed, smart choices about what language, framework, technology, etc. is best suited to solving your problem. Should your current problem be solved with a "Web 2.0" interface, a rich client application, etc. In your case, you should know what the benefits and downsides of the various J2EE containers are, and in fact, you need to know what using J2EE in the first place is buying you. Make informed decisions that help you solve your problem.

      JSP, Servlet, PHP, and Rails programmers should have experience with Java Swing, Java Web Start, and other technologies in order to decide what the optimal solution is -- or at least, the lead developer or senior software engineer needs to have an exceptionally wide range of skills in order to make these kinds of decisions.

      My team was stuck for years on a project that was forced into a web application mold (using Java servlets, JSP, Apache Struts, etc.) which caused us relentless headaches for most of the time. It should have been a regular application! A rich client. For many reasons. Unfortunately, at the inception of the project, the project lead had firmly decided that it had to be a web application.

      At my employer, I'm constantly learning new technologies to find new and better ways to solve problems. You need to be proactive and take the lead, and solve problems! I had previously been focused mostly on graphics programming, Java application and web programming, but when my project needed it, I learned about embedded programming, embedded operating systems, electronic design, microcontroller programming, etc., on my own. I learned how to do things that no one at the company has done yet, and I have found ways to make our product orders of magnitude better (10x smaller, 10x more battery life, 10x better performance). Since many of my colleagues are focused on their more specialized areas of expertise (e.g., Java application programming, or Java web programming, or functional testing, or database programming, or electronic circuit design), I actually am often frustrated because I have no one to consult with when I have a problem to solve.

      You express concern about learning technologies you will never use, but the fact is, that unless you acquire some other areas of expertise, you will never know what is the best tool for the job!

      --
      Dr Superlove 300ml. I use my powers for awesome
  3. Python? by freshman_a · · Score: 4, Insightful

    I'm surprised there was no mention of Python. I think Python is a good language to know. It seems to be used a number of places and forces people to write easily readable (and therefore maintainable) code. And I thought it was pretty easy to learn, especially if you have OOP experience.

    1. Re:Python? by Otter · · Score: 4, Insightful

      I love Python, but it doesn't really serve as a good example for this discussion because of what another commenter refers to as "half-arsed support for a load of different paradigms". If you want to stretch your mind with immersion in a different way of doing things, Python's collection of diverse best practices isn't an efficient way to do it.

  4. SQL is next for me by damn_registrars · · Score: 5, Insightful

    I learned BASIC back in the days of the C64. I then learned Perl when I decided to try my hand at bioinformatics. I picked up C++ at the same time. But there was one language that was used regularly there that always made me feel like a fool.

    SQL.

    Everything about it seemed backwards and inside out to me. I had a hard time wrapping my mind around "accountant-speak" and "normal forms" (still not sure WTF that means). Yet i know it will likely be in my future. Too much data resides in tables now, and too much data interpretation comes down to data(base) mining. Even the perl::sql modules couldn't save me completely.

    So I would say, if you plan for a career that is data-driven, learn SQL if you haven't already. It certainly doesn't seem to get easier to pick up as you wait longer - or at least it hasn't for me.

    --
    Damn_registrars has no butt-hole. Damn_registrars has no use for a butt-hole.
  5. I understand that COBOL is pretty hot... by PC+and+Sony+Fanboy · · Score: 4, Funny

    I hear that COBOL is a pretty good language to learn. It isn't new, but it is old enough to make a comeback (like disco, aviator glasses and big hair)...

  6. Going from C to others is a matter of right books by CRCulver · · Score: 4, Informative

    You're right that if you know one C-style language you know them all, and in order to expand your development skills you should learn other styles of languages. However, a major problem is that there aren't so many references for non-C-style languages as there are for C(++), Java, Python, and Ruby. Though Lisp is something all developers should encounter, most Lisp books on the market are antiquated. (However, thank goodness for the relatively modern Practical Common Lisp by Seibel.) I wish there were more tutorials out there for the exotic languages that might really teach you new tricks.

  7. Re:What Languages? by Chris+Mattern · · Score: 4, Funny

    FORTH learn to want I would why?

  8. None of the above... by Ckwop · · Score: 5, Insightful

    My advice would be to learn formal verification techniques. These can be applied across languages and across platforms. If you deploy them properly you can reduce your defect rate from 50 per 1,000 statements to 2 per 1,000 before the first test case is run.

    That will save you far more time than the latest over-hyped platform. While everyone else is fixing bugs in their application, you've already moved on to greener pastures. It will increase your capacity to build really good quality software and not get in to flame wars over nonsense. Nothing quite ends an argument over style more than saying: "Yes, but can you prove that your approach is correct? I can."

    Simon

    1. Re:None of the above... by Ckwop · · Score: 4, Insightful

      "Yes, but can you prove that your approach is correct? I can." You must be a joy to have as a co-worker.

      I know that it sounds like I'm a shit but in the real world office environment, I'm no where near that pretentious!

      That said, this does not detract from my underlying point: In this industry we are constantly told that the next big thing is going to revolutionize programming. We here this a lot about Ruby on Rail at the moment. We're told that if we just choose the right framework and programming methodology we can produce awesome software on time and on budget.

      We fall for it every. single. fucking. time. until. words. lose. all. meaning.

      The simple fact is that a large part of the time spent in a project is spent debugging the code we just wrote. Debugging is expensive. You typically have entire departments devoted to testing code. In fact, debugging routinely kills entire projects because it turns in to a very costly version of whack-a-mole and people eventually get tired and run out of money.

      I am convinced that the key to improving programmer productivity is to get them to write the software correct, first time. It does not lie in a language or programming style.

      Verification is not perfect. In my original comment I said that even after formal verification you can still expect bugs. After verification you can typically expect a similar error rate to conventional testing strategies. This is simply because you have to abstract things and you can make errors in your abstractions. Or you might simply make a mistake in your proof.

      The point is, verification does not have to be perfect to be better than unit testing. It simply has to find more defects faster. The evidence out there is starting to suggest that it does. Certainly with very large products.

      Simon

    2. Re:None of the above... by Coryoth · · Score: 4, Informative

      Just to make this a little more clear for the practical minded: the end result can be learning JML, a language that allows for annotations to Java (such as pre- and post-conditions for methods, assignability clauses for private variables, etc.). What benefit does that get you? Well you can use ESC/Java2 to run a theorem prover over those assertions about how things are supposed to work to verify that you code will actually meet all the claims you make of it (which is great for catching subtle unlooked for conrner cases). You can use the jmlunit tool from JML itself to create an automated set of unit tests to exercise you code against your annotations, and you also get (via jmldoc) to have your requirement annotations automatically included in your javadoc api documentation. When you consider that, for a lot of code, you ought to be writing those methods requirements up in api documentation anyway, all the extra extremely rigorous (and static/compile time) checking is just gravy. So there is plenty of practical benefit that's easy to get. To make best use of it, of course, you do need to have some grounding in how this sort of thing works so you can write your specifications well (no different, in many ways, than having some grounding in how CPUs work so you can write more efficient code).

    3. Re:None of the above... by epine · · Score: 5, Insightful

      My advice would be to learn formal verification techniques.

      Over my career, I wouldn't say that languages as such have been a major influence. Developing language-independent formal coding strategies has proven far more important. I've benefited from the writings of Dijkstra (immeasurably), Stroustrup, Iverson, Backus, Knuth, Plaugher, Stepanov, Brooks, Bertrand Meyer (with reservations), and not a lot else. I haven't learned anything profound from Wall, but thanks for all the Onions.

      Machine code gave me a good underlying model of the machine. Essential for many debugging situations, esp. back in the day when compilers would often generate faulty code.

      APL taught me the value and power of carefully reasoned primitives, the power *and* risk of concision.

      C taught me how easy it is to write a loop that's impossible to validate mentally (and then I taught myself how *not* to write such code).

      C++ taught me most of what I know about software engineering: programming in the large. C++ manages to be simultaneously better and worse than almost any other language one cares to name. There is a deep truth there that hardly anybody in the industry wishes to accept.

      SNOBOL and PL/1 taught me that kitchen sinks are best used for washing dishes.

      Perl taught me that it isn't at all difficult to write a complex regular expression that's harder to read than any APL program I ever wrote. I once had to program in APL on a teletype that lacked the APL character set, so every APL symbol was mapped to its ASCII counterpart based on key location. Reading APL code on this teletype was comparable to reading a particularly hairy Perl regex.

      PHP taught me that useful code can be written in a language with no coherent center whatsoever.

      LISP taught me that the human brain is not a stack machine. I grew up with Mechano. I don't understand the Lego people while all those identical bricks, and I don't understand the LISP people with all those identical cricks.

      COBOL taught me separation of concerns: code should be code, comments should be comments.

      Python taught me nothing at all. To me Python is just the metric version of PHP, which spares you the headache of guessing which functions calls are in Imperial or American units (roughly as arbitrary as whether a Wikipedia page uses British or American spellings). To be honest, I learned more from playing around with ChipWits many years ago. But I find Python enjoyable for some reason as much as I've used it.

      Pascal taught me that the evolution of a complex program occurs along more than a single dimension. I never enjoyed a single minute of Pascal programming.

      By far, I learned the most simply from reading Dijkstra (set aside an hour per page) and practicing the art of coding an algorithm in such a way that by the time you are done, your code couldn't possibly be wrong in any profound way, because you have captured the undiluted purity of essence.

      Plaugher helped to convince me that computers are *especially* fast at doing nothing. Whenever possible, when a precondition is not met, I just let the code continue, mostly doing nothing (if every statement is coded not to execute in the absence of its precondition, this is an automatic consequence). When the routine completes, I check state variables to see whether the desired actions were accomplished.

      I hate exceptions and have never conclusively demonstrated to myself why exceptions are necessary. I suppose to permit integration with code that *doesn't* rigorously guard every statement. I feel confident about my C++ code until the moment I enable exceptions in the compiler. Then I think to myself: this program could potentially fail in 1000 different ways depending on which exception paths are taken. It took the wizards of STL *years* to make the STL fully exception safe. That troubles me. A lot. More than all the other complaints about C++ piled to the moon and back.

      Knuth was wrong about premature opt

  9. assembly by petes_PoV · · Score: 5, Insightful
    if you have only ever programmed in a high-level language, you should really learn a low level one. This will give you an appreciation of what actually goes on inside a processor.

    Even if you never use it commercially, the background it gives you in terms of hardware will improve your ability to write efficient code.

    Personally, I think this should be the first language that future programmers (as opposed to CS graduates) should learn.

    --
    politicians are like babies' nappies: they should both be changed regularly and for the same reasons
  10. Whitespace by ookabooka · · Score: 5, Funny

    I think Whitespace is worth learning, if only to be a smartass on exams where the prof specifies you may use "any" programming language. Just leave it blank, then after the exam spend a few hours figuring out how the hell you would solve the problem in whitespace, and bring a proof of concept on a USB flashdrive to fight the inevitable incorrect grade you receive for the problem.

    I have yet to find the courage to actually attempt this. . .

    --
    If you are about to mod me down, keep in mind that this post was most likely sarcastic.
    1. Re:Whitespace by mcmonkey · · Score: 4, Funny

      That settles it. My next language will be lolcode.

      KTHXBYE

  11. Re:Anything But Perl by notque · · Score: 4, Insightful

    So don't use code snippets without understanding them. Just because you can find fewer doesn't mean perl is bad language to learn first.

    I have only learned perl, and am quite content with it as it does the jobs I need it to. I haven't been using it for 5-7 years, but I look back on code from 3 years ago and it's no less secure than anything I write now. I decided to understand any code snippet I used.

    I think Perl is a fine first language as long as you start simply, and expand giving yourself time to take in the concepts. Enjoy the exploration.

    I can't speak in comparison to any other languages obviously, but it worked for me.

    --
    http://use.perl.org
  12. It's not all syntax by shyberfoptik · · Score: 5, Insightful

    The fact that you think "mindless syntax" is the only difference between lisp, haskell, and c shows that you should probably learn one of these languages.

    1. Re:It's not all syntax by grammar+fascist · · Score: 4, Interesting

      Also, while some design patterns seem to be universal (structural patterns like facade, adapter and proxy, in particular, are necessary to make independent systems play well together), others indicate that the language you employ them in is lacking in features.

      Visitor? If you have first-class closures, it's the most natural thing in the world to pass a function to a traversal function. You don't need a name for it or a specialized set of trigger terms so that maintainers can see easily divine your intentions. You don't name your closure "visit", you name it after what it does.

      Singleton? Whatever for, if you can create object literals, or your classes are as first-class and polymorphic as instances?

      Factory? In Python, you override __new__...

      Learning other languages lets you determine the difference between unification and duct tape.

      --
      I got my Linux laptop at System76.
  13. Re:Verilog by exley · · Score: 5, Informative

    Verilog is a hardware description language, not a programming language. It may look like a high-level language -- wire assignments look like variable assignments, module instantiations look like function calls -- but conceptually it's completely different. Furthermore I don't know how applicable it's going to be for anyone who works in software design, which is the audience this question seems geared towards.

  14. Re:What Languages? by kat_skan · · Score: 4, Funny

    Because what Yoda would use is it.

  15. Get the Little Schemer by burris · · Score: 5, Interesting

    Like a lot of people have commented on this thread, it's past time for you to learn a functional language. I'm not sure if it is true, but new CS students at MIT used to have to learn Scheme as their first language. Learning a functional language will transform your programming ability.

    I recommend the book The Little Schemer This book is like no other programming book you have ever used. It is a socratic dialog between you and the interpreter. Questions on the left, answers on the right. It is meant to be used with an interpreter.

    Once you make it through this book you'll be a much, much better programmer. You'll also have an easy time learning languages like Haskell, which is used quite a bit in academia and is useful for real world software.

    So buy a copy of the Little Schemer and download an interpreter, Dr. Scheme is pretty good, and get cracking.

  16. Re:Verilog by Anonymous Coward · · Score: 5, Informative

    It's a programming language for programming a type of CPU called an FPGA.

    It's not. It's a hardware description language, so can be used in FPGAs, but is equally used for ASIC designs.

    Furthermore, an FPGA is NOT a CPU of any kind. It's a configurable logic chip. You could program it as a CPU, but it's not one until you do.

  17. Screw them all. by God+of+Lemmings · · Score: 4, Interesting

    Write your own language... it's certainly more educational.

    --
    Non sequitur: Your facts are uncoordinated.
  18. Re:Going from C to others is a matter of right boo by Serious+Callers+Only · · Score: 4, Informative

    If you're looking for books on LISP, another book to consider is On Lisp. It's free to download from the following link as it's inexplicably out of print.

    http://www.paulgraham.com/onlisptext.html

  19. Re:Verilog by exley · · Score: 4, Insightful

    This is a great example of mods and commenters (i.e. GP, currently modded informative) who don't know what the hell they're talking about. Parent post is correct -- while you can use Verilog for programming an FPGA (field-programmable gate array), Verilog has many uses in hardware design. It's called Verilog HDL (hardware description language) for a reason. Here is an overview of Verilog for the uninitiated.

  20. Re:Verilog by twistedsymphony · · Score: 4, Interesting

    Nice to see Assembly at the top of your list. There's something to be said for learning some form of assembly.

    after learning C++, Java and a few others I decided to get into Microprocessor and Microcontroller programming and did so in whatever flavor of assembly the chip supported. I gained an entirely new respect and understanding about how these chips work on physical level as well as a much greater understanding about how inefficient most applications are and the enormous potential for improvement, as well as the enormous potential of modern CPUs and how much that potential is squandered on what people actually use them for.

    I've developed a number of embedded applications now and the way I think about other applications has really changed too. My next language will probably be Verilog because the price of FGPAs has dropped significantly and they are incredibly versatile tools if you know how to use them... some of the things I've seen people use them for are mind boggling

  21. Re:Going from C to others is a matter of right boo by grammar+fascist · · Score: 4, Informative

    About the only really unique thing that CL brings to the table these days is conditions and restarts.

    And a powerful macro system. Scheme's is interesting, and you can do most anything with it, but certain things require a great deal of hoop-jumping.

    Aside from conditions and restarts, macros seem like the last thing that hasn't sneaked into popular languages yet. For the uninitiated: imagine being able to write a function that, at compile time, takes and returns entire syntax trees. Or imagine if the C preprocessor let you write #defines that were full-fledged functions that had the entire language and runtime available during expansion.

    Imagine if C let you hook into the tokenizer and the parser! Why, you could invent your own language for solving your problem, and then solve your problem in that language!

    It's worth learning Common Lisp just to play with this stuff.
    --
    I got my Linux laptop at System76.
  22. Re:Verilog by SanityInAnarchy · · Score: 4, Interesting

    I'd suggest erlang for its own sake -- a parallel programming model that doesn't suck as much as threads with locks.

    • C -- you think you know it, because you know C++, but you really don't. Also, if you're on Unix, you'll need it at some point.
    • JavaScript/EcmaScript -- has nothing to do with Java. Dynamic everything, closures, first-class functions -- most of the Lisp-y goodness, but you already know the C-like syntax.
    • Haskell -- purely functional programming, lazy-evaluation.
    • Erlang -- pervasive message passing as a language construct.
    • Ruby -- beautiful syntactic sugar for most of the JavaScript/Lisp tricks you learned elsewhere. Nice for domain-specific languages, too.

    Disclaimer: I don't actually know Smalltalk (Squeak won't run on my machine), Prolog, Verilog, or Scheme. I did learn Lisp, once upon a time.

    Also: I think that while we do have languages that are good for specific tasks, every language I've tried is missing something I consider to be critical.

    Sometimes I'm able to bring it in -- with JavaScript, I can almost emulate Ruby's iterators (each, collect, etc). But sometimes, it's something more pervasive -- for instance, while most languages support some kind of threads, they often allow supporting libraries to be written in such a way that they break when used in threads, and some of my favorite languages (Ruby, Python, Perl) don't support real OS threads actually running in parallel. (Python has a Global Interpreter Lock, and Ruby seems to be about to adopt the same, meaning that a single process of each won't be able to really take advantage of multicore/multiprocessor systems.)

    Sometimes, these things are mutually exclusive -- how do you have a purely-functional, lazily-evaluated language, and also make it simple and imperative? But most of the ones I care about aren't -- there's no reason a language like Ruby couldn't be written to be fast, bytecode-compiled, and truly threaded. There's no reason a language like Erlang has to have non-variable variables and ass-ugly syntax.

    --
    Don't thank God, thank a doctor!
  23. Re:Verilog by sean4u · · Score: 5, Insightful

    Maybe you should have been +5 Funny, but not +4 Insightful.

    An FPGA might very well be able to do very little. See Adrian Thompson's page, especially his 1990s work on evolving FPGA circuits.

    'An FPGA' could be a very limited device.