Ruby is a dynamic, open source programming language with a focus on simplicity and productivity.
0
votes
0answers
31 views
Count the number of recursion [closed]
I have this algorithm that i made:
def printPath(n, m)
if n == 0 and m == 0
return puts 'X'
end
if n > 0
printPath(n-1, m)
end
if m > 0
printPath(n, m-1)
end
end
...
2
votes
1answer
66 views
Assigning variables in a block
It's common pattern when you need to assign a variable inside a block
def query(sql)
logger.debug "Db: Executing query #{sql}"
result = nil
ts = Benchmark.realtime do
result = @db.exec sql
...
2
votes
2answers
112 views
Cleaner Code for custom query
Is there a cleaner way to do the following?
friend_ids = [1,2,3,4,5]
friendIDsQuery = ""
friend_ids.each_with_index do |friend_id, index|
friendIDsQuery += "SELECT id FROM test WHERE user_id = ...
5
votes
2answers
49 views
Ruby method return values - how to be more Ruby-like?
How should I make this more Ruby-like or just "better"?
def password_format_is_valid?(submitted_password)
#Gets regular expression for password format validation from settings and applies it
...
0
votes
2answers
42 views
(sort of) casting types in Ruby: changing class of an instance [closed]
I defined the class Rectangle:
class Rectangle
attr_reader :b, :h
def initialize(b, h)
@b = b
@h = h
end
def area
@b*@h
end
def to_s
"Rectangle #{@b}x{@h}"
end
end
and ...
5
votes
2answers
117 views
Which ruby style is preferred? [closed]
option 1
data =
if page <= total_pages
collection[((page - 1) * limit)...(page * limit)]
else
[]
end
option 2
data = []
if page <= total_pages
data = collection[((page - 1) ...
2
votes
0answers
45 views
How might I make this code more DRY?
I have the following Ruby code in an RSpec file:
describe "order" do
before do
LIST_LENGTH ||= 10
@skills = FactoryGirl.create_list(:skill, LIST_LENGTH)
@developer = ...
2
votes
0answers
49 views
Needs code review for class implementation
could you please review the code for the implementation of the class (link: Ruby. Code review. Working alone on the code)
require_relative 'robot'
class Game
def initialize
# initialize values
...
0
votes
1answer
54 views
Ruby. Code review. Working alone on the code
I'm working alone on my code, trying to learn Ruby as I go.
Class Robot is supposed to be instantiated with the position on a map, and whether it is facing toward a side of the map. It has a couple ...
3
votes
5answers
79 views
Terser way of generating deeply nested hash
I need to generate a Ruby hash that looks like this:
{ "children" => [
{ "children" => [
{ "children" => [
{ "children" => [] }
]}
]}
]}
... for an arbitrary level of ...
6
votes
3answers
167 views
Best Ruby one-liner to generate a random alphanumeric string
This is a little arbitrary, but I'm curious what people might come up with. I want to generate a random alphanumeric string in ruby, as succinctly and efficiently as possible.
([nil]*8).map { ...
3
votes
2answers
79 views
Making a Small Program Fit Ruby Standards
I am a high-school freshman who is kinda new to Ruby, and I am doing a small project on Ruby. One of the big things that I want to get out of this project is how to follow the "Ruby standards" that ...
4
votes
2answers
72 views
Spoj's 1st problem in tdd using Ruby
I am pretty new to TDD and is following problems on spoj.pl for practice. I need help with following code; it was my first attempt.
Problem: Your program is to use the brute-force approach in order ...
10
votes
4answers
163 views
Is there a more succinct way to write this Ruby function?
Just for fun, I want to try to write this Ruby function more succinctly. I imagine it can be done, I'm just not knowledgeable enough with Ruby yet to know how. Any suggestions?
def tags
return ...
6
votes
1answer
79 views
How to make my script nicer / more Ruby?
I wrote this little script in PHP a bit ago. It takes a .csv file and outputs a .txt file with certain data arranged in a "psuedo-array" looking format. I recently started messing around with ruby so ...
