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    <p>I don't think that there's any question about the functional approach to programming "catching on", because it's been in use (as a style of programming) for about 40 years. Whenever an OO programmer writes clean code that favors immutable objects, that code is borrowing functional concepts.</p> <p>However, languages that <em>enforce</em> a functional style are getting lots of virtual ink these days, and whether those languages will become dominant in the future is an open question. My own suspicion is that hybrid, multi-paradigm languages such as <a href="http://www.scala-lang.org/" rel="noreferrer">Scala</a> or <a href="http://ocaml.org" rel="noreferrer">OCaml</a> will likely dominate over "purist" functional languages in the same way that pure OO language (Smalltalk, Beta, etc.) have influenced mainstream programming but haven't ended up as the most widely-used notations.</p> <p>Finally, I can't resist pointing out that your comments re FP are highly parallel to the remarks I heard from procedural programmers not that many years ago:</p> <ul> <li>The (mythical, IMHO) "average" programmer doesn't understand it.</li> <li>It's not widely taught.</li> <li>Any program you can write with it can be written another way with current techniques.</li> </ul> <p>Just as graphical user interfaces and "code as a model of the business" were concepts that helped OO become more widely appreciated, I believe that increased use of immutability and simpler (massive) parallelism will help more programmers see the benefits that the functional approach offers. But as much as we've learned in <a href="http://blip.tv/file/1472720" rel="noreferrer">the past 50 or so years</a> that make up the entire history of digital computer programming, I think we still have much to learn. Twenty years from now, programmers will look back in amazement at the primitive nature of the tools we're currently using, <em>including</em> the now-popular OO and FP languages.</p>
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    1. POWhy functional languages?
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    1. USCommunity
    1. USjoel.neely
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    1. COJust look 20 years back. I don't thing programming has evolved much. Well have better tools, maybe a new language or 2 but fundamentally not much will change. This will take more than 20 years. We all once thought we would see flying cars in 2000. :)
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      1. USbibac
    2. CO"Twenty years from now..." Isn't that how it always works? It is a good time to be alive, with so much rapid improvement in pretty much every field.
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      1. USAlex Baranosky
    3. COFrom Henry Baker: the Algol/Fortran world complained for ages that they didn't see what possible use function closures would have in efficient programming of the future. Then the 'OO revolution' happened, and now everyone programs using function closures, but they still refuse to to call them that.
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      1. USNorman Ramsey
 

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