rhelli / enumerable-methods

This project focuses on recreating Ruby's Enumerable mixin

🧱 Advanced Building Blocks - Ruby Enumerables

This project is part of a series of projects to be completed by students of Microverse.

This project consists of recreating, from scratch, the Ruby Enumerable Module which is commonly used in day-to-day use. Due to the nature of the 'Enumerable Module' and it's oh-so frequent use - this proves to be an important concept for newcomers to Ruby.

📏 The Project Brief

The assignment can be found in the Odin Project's HTML and CSS course that can be found here.

1. Create a new Enumerable Module.
2. Create #my_each without using #each. Use #yield statements and ensure it does the same thing as #each.
3. Create #my_each_with_index (still not using #each but rather #my_each now).
4. Create #my_select.
5. Create #my_all?
6. Create #my_any?
7. Create #my_none?
8. Create #my_count
9. Create #my_map.
10. Create #my_inject.
11. Test our shiny new #my_inject by creating a method called #multiply_els which (suprisingly), multiplies each array element together.
12. Modify #my_map to take a proc instead of a block (only one at a time though).

🧰 Technologies & Languages Used

• Ruby 2.3.7p456
• Rubocop
• Stickler-CI
• Git Flow

🤯 The Project

The project can be found at https://github.com/Rhelli/Enumerable-Methods

💌 Contributing

Contributions, issues and feature requests are welcome!
Feel free to check issues page.

1. Fork it (https://github.com/Rhelli/Enumerable-Methods/fork)
2. Create your working branch (git checkout -b [choose-a-name])
3. Commit your changes (git commit -am 'what this commit will fix/add/improve')
4. Push to the branch (git push origin [chosen-name])
5. Create a new Pull Request

👨🏾‍💻 Creator

Rory Hellier - GitHub

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enumerable-methods's Issues

Issue for December 16, 2019

• The my_all?, my_any?, my_none? lack support for reference values, classes and regular expressions.

• The my_inject method should do the same as the native method inject when given a value and a symbol. An example highliting the problem:

[1,2,3,4,5].inject(12, :*)
=> 1440

[1,2,3,4,5].my_inject(12, :*)
...
ArgumentError (wrong number of arguments (given 2, expected 0..1))

• [1,2,3,4,5].my_all?(Intiger) should give true ['saheed', 'oladele', 'suretrust'].my_all?(/d/) should return True

John Carpenter's december morning session

• Functions won't be able to work with ranges. If I remember correctly, TSE's will test with this and might cause trouble. Enphasis on might

• You already know this but you can re-use all to finish any / none. Or None for the others two for that matter.

• My inject returns an enumerator when called this way. puts [2, 4, 5].my_inject(:*)

• mulitply_else works (as long as my_inject works) if taken out of module Enumerator.

• Use unless instead of if for negative statements.

• Code for my_any / my_none / my_all The code on the 'develop' (development) branch should not be broken, but this is not the case. It's missing an end, so it won't readily work for those that pull the branch.

• About the code on the 'feature/my_inject' branch: "my_all?", "my_any?", "my_none?" lack support for regular expression, classes and example objects.

• On the positive site, my rspec did not

• line 94: 'inj_arr = injector + self' -> what would happen if I introduce a symbol as an 'injector' value?

• line 99: 'print result' is not required inside the method -> maybe switch to implicit return

• line 91: '*injector' -> how do I know how many parameters I'm recieving? And the type of those parameters?