Functional programming is a paradigm which attempts to solve computational problems by the chained evaluation of functions whose output is determined by their inputs rather than the program state. In this style of programming, side effects and mutable data are deprecated.
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870 views
Responsive/adaptive website code
I have all these functions that work together to create functionality on a page. Is the structure of these functions OK? Can I do anything to speed this up or make my code better? I'm not exactly ...
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votes
1answer
522 views
Generic pure functions memoization
I like to create tools for memoization since it can sometimes be useful. I recently created a generic tool for memoizing the results of pure functions.
Here is an example of how it works:
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votes
3answers
667 views
Hailstone Sequences in Python
For the problem given:
Douglas Hofstadter’s Pulitzer-prize-winning book, Gödel, Escher, Bach, poses the following mathematical puzzle.
Pick a positive integer \$n\$ as the start.
If \$n\$ ...
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votes
1answer
99 views
Implementing logic in a different way
I need to write a function which will do the following functionalities
I would get a string and a array as input parameters
The string would be like one of the following for example
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votes
4answers
384 views
Am I thinking functionally in these simple Haskell functions?
I'm learning Haskell using the University of Pennsylvania's online materials. I'm a few lessons in and was looking for some feedback about whether I'm thinking functionally enough or porting over my ...
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votes
1answer
90 views
Streaming Collatz
Challenge
The recent question The 3n + 1 algorithm for a range inspired me to investigate a Java-8 dependent streaming mechanism for solving the programming challenge:
For any two numbers ...
5
votes
3answers
1k views
Design pattern for adapter
I wrote a framework and I want to hear the thoughts of other on the design patterns it uses. Every method contains three design patterns - adapters(strategy), intercepting filters, and observers.
A ...
11
votes
2answers
187 views
N-Queens functional
I'm trying to get a better grip on the new functional possibilities of Java 8.
As an example, I took this very elegant Haskell snippet:
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6
votes
0answers
77 views
Higher-order Prolog predicates combine/3 and reduce/3
I'm trying to find useful versatile meta-predicates that are different from the vanilla ones offered currently by library(apply).
How about the following two: ...
6
votes
2answers
156 views
Package manager in Clojure
I wrote a package manager in clojure that does 5 things:
depend a b //creates a and b (if they don't exist) and adds dependency on a
install a //installs a and its dependencies
list //prints out ...
3
votes
2answers
126 views
Sequence processing problems
Problem 1:
Sum the even numbers for the first n fibonacci numbers
Solution:
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3
votes
1answer
116 views
Refactoring while-do into tail recursion with F#
I have a while-do loop nested inside a while-do loop in my program, due to it needing to iterate in two dimensions through an array of arrays, and originally my loop looked like this:
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vote
1answer
136 views
How to improve this functional python trial division routine?
The following functional program factors an integer by trial division. I am not interested in improving the efficiency (but not in decreasing it either), I am interested how it can be made better or ...
