Tagged Questions
4
votes
0answers
47 views
Functionally Typed I/O Streams
I thought up a function that provides types with InputStream and OutputStream:
...
3
votes
2answers
82 views
Timing Project Euler Problem 1
Is there a better way to time the functions and print the result and function name dynamically?
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3
votes
1answer
100 views
Binary search in functional-style Scala
Curious to know how I can improve it, especially the pattern matching part seems a bit repetitive at the moment (lots of case x if ds(x))
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3
votes
1answer
61 views
Scala Tic Tac Toe Game
This is my first Scala game. I would love some feedback on my coding style, or your brief input on how you would do it.
...
5
votes
2answers
80 views
Beginner Project: Bunny City
I am a Java programmer, and I just recently started learning Scala for fun. I found a group of projects here, and I tried to do the graduation excercise. The problem is, my code looks a lot like java, ...
1
vote
1answer
80 views
Converting object oriented style code to functional in Scala
I came across Java like Scala code that I am trying to refactor to make it functional and immutable. The first obvious flaw is that it's violating thread safety by using mutable public class level ...
1
vote
1answer
62 views
4
votes
0answers
46 views
Neatly Transforming Anorm ResultSet Into Map[Parent , (Set[Child1], Set[Child2]))]
I have a table Bill containing Bills with 0...n relationships to Material and ...
2
votes
1answer
85 views
Functional Re-Write in Scala: Rows of Strings with a Max Width
I came across an issue the other day where I really just could not think of a functional solution. So I fell back on my imperative programming skills. Since a functional solution still eludes me, I ...
5
votes
1answer
356 views
Code with many “early returns (exits)” into the functional style
I have some Scala code that uses Internet to authorize a user. Therefore, it can throw Exceptions like IOException in the method.
The original code was written in ...
1
vote
2answers
112 views
More functional approach
I wonder if there is a more "functional" way of implementing something like this:
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3
votes
2answers
269 views
How to rewrite this code in functional way?
My code looks like imperative style code. I want to make my code more functional. How I can rewrite my program so it become functional style code?
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3
votes
2answers
161 views
1
vote
1answer
86 views
2
votes
3answers
114 views
is there a better and more functional way to write this
I'm learning Scala and functional programming. Can I make it more functional? Thanks
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3
votes
1answer
89 views
Replacing a sequence of real numbers with another sequence
I have a simple task:
Given a sequence of real numbers, replace all of its members larger
than Z by Z and count the number of replacements.
I solved this task using Scala, but my code looks ...
2
votes
2answers
715 views
Option type in C# and implicit conversions
Good morning everyone,
I have decided to create a simple Option type for C#. I have essentially based it on the
Scala's Option.
...
5
votes
2answers
372 views
Typesafe Tic-Tac-Toe API
So I've been working on Tony Morris' Tic-Tac-Toe challenge. The rules are as follows:
Write an API for playing tic-tac-toe. There should be no side-effects
(or variables), at all, for real. The ...
2
votes
3answers
185 views
Cleaner way for coding a repetitive application of a function
I have this function definition which takes an r and applies the function f n times:
...
4
votes
1answer
840 views
Tail-recursive factorial
Is there anything what could be improved on this code?
def factorial(n: Int, offset: Int = 1): Int = {
if(n == 0) offset else factorial(n - 1, (offset * n))
}
...
6
votes
3answers
822 views
A safer way to cut a string
I want to get just the first line of a big string. Currently, here's how I do it:
...
5
votes
2answers
211 views
Change code to use functional style
I tried to solve a programming contest problem in Scala, but I have a feeling, that it could be done in a more functional way. I compared it with the solution written in imperative style and it is not ...
2
votes
1answer
172 views
Defining transpose on a collection of irregular collections
I was asked to submit my request for code review on http://stackoverflow.com/questions/10672046/defining-transpose-on-a-collection-of-irregular-collections here.
This is a follow-up to the post I ...
4
votes
2answers
128 views
Attempting to eliminate var (and imperative style) from my Piece class
I've been cooking with gas since I got Daniel C Sobral's help on my last question. I am now re-reading Odersky's "Programming in Scala, 2nd Edition" (finished my first reading about this time last ...
2
votes
1answer
103 views
Ideal FP/Scala way to vaildate rectangular list
I am learning Scala and FP (Functional Programming), coming from Java, OO and a strong imperative pardigm. I am now trying to implement a small puzzle solving project so I can get some deeper hands on ...
4
votes
4answers
272 views
Finding the first stream of non-repeating elements in Scala (without recursion or side-effects)
Here are some examples:
[1, 2, 3, 4, 5] => [1, 2, 3, 4, 5]
[10, 15, 10, 15, 30] => [10, 15]
[1, 2, 3, 4, 1, 5, 6, 7] => [1, 2, 3, 4]
Here's my best (and ...
2
votes
1answer
212 views
Scala object-function balance
I am learning Scala, coming from Java background. Here I have written a small prototype proof of concept program that is a part of concept base for a simple upcoming tutorial game. There are two game ...
3
votes
1answer
349 views
2
votes
4answers
449 views
Multiple if conditons in scala using funcional programming
The following code has a lot of conditionals. I am trying to write
it in a functional programming way.
...
1
vote
2answers
389 views
Scala mastermind solver, which is the most scala-ish
I am trying to express the classical TDD kata of mastermind in the most idiomatic scala I can. Here is a scalatest, test suite :
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