Advanced Building Blocks - Enumerable Methods

[Collaborative project]

In this project, we are implementing our custom enumerable methods of Ruby.

Covered methods

• #my_each
• #my_each_with_index
• #my_select
• #my_all?
• #my_any?
• #my_none?
• #my_count
• #my_map
• #my_inject
• #multiply_els which multiplies all the elements of the array together by using #my_inject, e.g. multiply_els([2,4,5]) #=> 40

Built With

• Ruby

Getting Started

Clone

https://github.com/Leon-Mbegera/Enumerables

To get a local copy up and running, follow these simple example steps.

1. Open a terminal window and enter clone https://github.com/Leon-Mbegera/Enumerables
2. Run git checkout -b your-branch-name. Make your contributions
3. Type in terminal ruby enumerables.rb to start testing
4. Push your branch up to your forked repository
5. Open a Pull Request if you want to merge branches with a detailed description of the development branch of the original project for a review

Prerequisites

Ruby installed localy

Run test cases using RSpec

• In your terminal, run bundle install to download and install the testing framework"
• Type bundle exec rspec to run the test cases already written

my_each

[1,2,3,4,5,6].my_each{|i| p i}
=> 123456

my_each_with_index

[3,5,8,1].my_each_with_index{|element, i| p "#{element}: #{i}"} 
=> "3 0"
   "5 1"
   "8 2"
   "1 3"

my_select

[1,2,3,4,5,6].my_select(&:odd?)
=> [1,3,5]

my_all?

[1,2,3,4,5,6].my_all?(&:even?)
=> false

my_any?

[1,2,3,4,5,6].my_any?(&:odd?)
=> true

#my_none?

[1,2,3,4,5,6].my_none?(&:odd?)
=> true

#my_count

[1,2,3].my_count
=> 3
[1,2,3].my_count { |x| x > 1}
=> 2

#my_map

[1,5].my_map { |x| x * 2 }
=> [2, 10]

[1,2,3,4,5].my_map Proc.new { |x| x * 4 }
=> [4,8,12,16,20]

#my_inject

(5..10).my_inject(:+)
=> 45
(5..10).my_inject { |sum, n| sum + n }
=> 45

#multiply_els

[1,2,4,5,6].my_multiply_els
=> 240

Authors

👤 Shoira Toshpulatova

• GitHub: @githubhandle
• LinkedIn: LinkedIn

👤 Leon

• GitHub: @githubhandle
• LinkedIn: LinkedIn

Acknowledgments

• Thanks to my coding partner and the team
• Inspiration