- Define a method that uses
yield
and awhile
loop to pass each element of a collection to a block. - Gain a deeper understanding of the common iterator
#each
.
Note: Some of the tests may be passing before you write any code. But, in order to get all of the tests passing you'll need to use the yield
keyword correctly.
Now that you know how the yield
method works, try to write your own version of the #each
method without using the #each
method provided by Ruby.
You'll be building out the content of the #my_each
method. This method should accept an argument of an array and use the while
loop to iterate over each member of that array, yielding each element contained in the array to a block.
Here's an example of what should happen when you call your my_each
method:
collection = [1, 2, 3, 4]
my_each(collection) do |i|
puts i
end
This should output:
1
2
3
4
and return:
#=> [1, 2, 3, 4]
Just like the real #each
method.
View My Each on Learn.co and start learning to code for free.