Advanced programming languages

Post by SomeOtherGuy » Tue, Jan 10, 2012, 2:37 PM UTC

jasim wrote: post #53

tomp wrote: post #48

Earlier quoted context omitted.

> I'm from India and if I start to find a good Haskell or Scala programmer In general, if you need to find a good programmer for any language (Python, JavaScript, Java, ...), you will be searching for a long time. The only difference is that with Haskell, OCaml and other advanced languages, usually the first programmer you will find is already very good.

However finding that first 'good' programmer is going to be harder for languages like Scala, Haskell etc. compared to finding the first good programmer on more popular languages

Post by bobfunk » Tue, Jan 10, 2012, 2:51 PM UTC

jiggy2011 wrote: post #10

kd0amg wrote: post #9

Earlier quoted context omitted.

since a large amount of programming is all about state and side effects IANA web developer, but... Doesn't web development typically put state into a database system instead of the scripts the server runs to generate the requested pages? It seems reasonable enough to have a function that takes a page request as input, calls some other functions to look up info from the database, then constructs and returns a page and…

You can do allot with a database sure but sometimes you want multiple transactions within a single request and data will change between them. You may also take input from other sources than a database such as flat files, web APIs emails etc and need to do a bunch of processing between them. Not to mention if you are using Comet or something where you hold a request open for a long time and push and pull allot of data…

Post by rdtsc » Tue, Jan 10, 2012, 3:30 PM UTC

Post by kd0amg » Tue, Jan 10, 2012, 4:40 PM UTC

jiggy2011 wrote: post #33

kd0amg wrote: post #12

Earlier quoted context omitted.

sometimes you want multiple transactions within a single request and data will change between them Is this an issue with race conditions, or with alternating between reading and writing the state during a single request, or both, or something else entirely? You may also take input from other sources than a database This doesn't seem like it should make a difference: you write a function to get the necessary data from…

Is this an issue with race conditions, or with alternating between reading and writing the state during a single request, or both, or something else entirely? Usually reading and then writing some state followed by waiting briefly to see if another thread will change the same value, if it does use then do something with the new value and return that to the request. I agree that the processing you do with that data mi…

  (let* [(x (... DB query ...))
         (y (... API query based on x ...))]
     (begin (... write some state based on x and y ...)
            (... wait a bit ...)
            (... read the same piece of state ...)
            (if (... it is unchanged ...)
                (... then ...)
                (... else ...))))

Post by jhuni » Tue, Jan 10, 2012, 9:49 PM UTC

microtonal wrote: post #55

nickik wrote: post #45

Earlier quoted context omitted.

Good question. I think its a couple of diffrent things. 1. Java is not really evolving, people are frustrated 2. Multicore is difficulte and FP claim they are better at it. 3. Complexety of ever bigger codebases 4. Java Script not longer the worst language in the world, people start to understand whats powerful about it and want to know what more is possible.

Additionally, I think that Haskell really has to offer something over most other FP languages. Many features of dynamic impure FP languages have already been ported to languages such as Ruby or Python. What Haskell provides over, say Lisp, is exceptionally strong typing and isolation of side-effects. This is a quality that cannot be ported to mainstream languages easily. So, why didn't Haskell become more popular ear…