# Tagged Questions

621 views

### Functional programming and stateful algorithms

I'm learning functional programming with Haskell. In the meantime I'm studying Automata theory and as the two seem to fit well together I'm writing a small library to play with automata. Here's the ...
164 views

### Strategy for normalising and interpreting location data

I'm a bit stuck with a problem involving the normalisation of location input data from the user (which comes from a third party). Aim To logically breakdown and interpret the user location input ...
428 views

### Functional Reactive/Relational Programming – Is there a difference?

I've been using Reactive Cocoa (by GitHub), a Functional Reactive Programming API for use with the Cocoa libraries for a while now, but have just read "Out of the Tar Pit", the paper that supposedly ...
583 views

### Ring of numbers where adjacent entries sum up to a prime

Given a number n, find a permutation of the numbers 1...n such that all adjacent entries sum up to primes. If such a permutation does not exist, throw an error. Is there a purely-functional way to do ...
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### Permuting a list of numbers by pushing and popping onto a stack

Suppose we have some long stack of numbers. There is another intermediate stack, and a destination stack to be returned in the end. The only two operations allowed is transferring the top of the old ...
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### LOOP program only need inc and zero

I have 4 different commands in LOOP programming language: y=Zero() y=Val(x)=copy x and put it in register y y=Inc(x)=x+1 y=Dec(x)=x-1 Finally I also have loop n times { ... ...
150 views

### LOOP-computable functions

I was just reading a chapter about LOOP-computable functions and I have the following question: Is it possible to numerate every LOOP program with an algorithm? Formally: Is it possible to have a ...
193 views

### Sorting : Useful for more than just viewing data?

Context I'm currently working on a personal project involving functional reactive JavaScript, and I've come up with an odd question. Note that this question is not JavaScript specific, but that is ...
303 views

### Convert list of 24-hour-precipitation values into total-by-hour

Let's say I have a list of precipitation values by hour, each showing how much rain happened in the prior 24 hours, ordered by date. For example: { '2012-05-24 12:00': 0.5, // .5" of rain from ...