Pay attention carefully because this is a hell of a question ;-) I want to use template functions for generic collection actions (like search, foreach, etc.) in C while maintaining compiler static type checking. It is fairly straightforward while you're using simple callbacks like in this example: #define MAKE_FOREACH(TYPE)\ void forea...
Take this example code (ignore it being horribly inefficient for the moment) let listToString (lst:list<'a>) = ;;' prettify fix let rec inner (lst:list<'a>) buffer = ;;' prettify fix match List.length lst with | 0 -> buffer | _ -> inner (List.tl lst) (buffer + ((List.hd lst).ToString())) inner lst "" ...
I write JavaScript code and I try to use its functional language nature. In other functional languages (or even in Ruby), if I don't explicitly set the return value of a function, it will return the value of the last evaluated expression. JavaScript does not follow this pattern. (To be precise, JavaScript always returns a value as well....
I hear about the manifold increase in productivity, while using certain languages (RoR). I have also heard about some VMs being more optimal than others (GHC?). Yet others are trying to optimize their language of choice by improving the underlying architecture (Unladen Swallow) However, while reading a paper ("SSA is functional programm...
I've dabbled with Haskell in the past, and recently got back into it seriously, and I'm reading real world haskell. Some of the examples they've shone, I've yet to understand. Such at this one: myLength [] = 0 myLength (x:xs) = 1 + myLength (xs) I don't see how this works, what is 1 really being added too? How is the recursion ret...
What's the best Python equivalent of Common Lisp's maplist function? From the maplist documentation: maplist is like mapcar except that function is applied to successive sublists of the lists. function is first applied to the lists themselves, and then to the cdr of each list, and then to the cdr of the cdr of each list,...
How difficult is it to learn F# for experienced C# 3.0 developers, and/or what would you say is the most difficult part of learning F#? ...
Hi, I've got a list of strings, is it possible to convert it to an list of ints? eg: ["1","2"] -> [1,2] THANKS, ...
Is there a list of them with examples accessible to a person without extensive category theory knowledge? ...
If this has already been asked and answered, please point me to the existing Q & A and I'll delete this question. I did look and didn't see this one answered. Are there mainly functional languages (like LISP, Scheme, Haskell and so forth) besides F# for the CLR platform? I say "mainly functional" because realize there are CLR language...
Feel free to point me to other answers if these have already been asked! I'm just starting F# with the new release this month. I've got some background in both OO and functional languages (Haskell and Scheme, but not OCaml/ML). A couple of questions have arisen so far from reading through the little tutorial thing that comes with the F#...
Hi all, I come across the word 'thunk' at a lot of places in code and documentation related to Scheme, and similar territories. I am guessing that it is a generic name for a procedure, which has a single formal argument. Is that correct? If yes, is there more to it? If no, please? For eg. in SRFI 18, in the 'Procedures' section. ...
I'm a very experienced Object Oriented developer. Which of the Functional Programming languages would be the best one for getting my feet wet? Keeping in mind: IDE Compiler Maturity Debugging Tools Which Functional Programming language would you recommend? ...
Hello, I'm a mechanical engineering grad student and my adviser has just asked me to write a data visualization utility for one of our sensor projects. As it's summer and he wants me to have some fun with it, I thought this would be a great time to learn a language adept at scientific computing, so I went ahead and plowed right into F#....
Sorry I don't quite get FP yet, I want to split a sequence of lines into a sequence of sequences of lines, assuming an empty line as paragraph division, I could do it in python like this: def get_paraghraps(lines): paragraphs = [] paragraph = [] for line in lines: if line == "": # I know it could also be "if line:" ...
As an exercise in Haskell, I'm trying to implement heapsort. The heap is usually implemented as an array in imperative languages, but this would be hugely inefficient in purely functional languages. So I've looked at binary heaps, but everything I found so far describes them from an imperative viewpoint and the algorithms presented are h...
What is implicit recursion? How is it different from explicit recursion? ...
Hi, I have been using the Module for SICP in DrScheme 4.2 but which language has the best support for SICP in DrScheme? Has anyone here tried this? Thanks. ...
I'm getting stymied by the way "dot notation" works with objects and records when trying to program in a point-free functional style (which I think is a great, concise way to use a functional language that curries by default). Is there an operator or function I'm missing that lets me do something like: (.) object method instead of objec...
How to write lambda methods in Objective-C ? ...