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Ruby Ruby Collections Ruby Arrays Removing Items From Arrays

Posted by Mirshad Oz
Mirshad Oz
4,545 Points

Please update the last part of the lesson in Code Samples section. array.slice method does NOT actually remove items

Please update the last part of the lesson in Code Samples section. array.slice method does NOT actually remove items from array.

Thanks

2 Answers

rowend rowend
rowend rowend
2,926 Points
rowend rowend
rowend rowend
2,926 Points

Mirshad Oz I understand what you mean...the lesson is about removing elements from array and the slice method is not for that.

Alexander Davison
Alexander Davison
65,469 Points
Alexander Davison
Alexander Davison
65,469 Points

Actually, you might've mistaken something.

:point_right:The slice method wasn't designed to remove anything.

It was designed to retrieve all the items from one index to another. Let's pretend I'm in irb:

irb(main):001:0> numbers = [1, 2, 3, 4, 5]
=> [1, 2, 3, 4, 5]
irb(main):002:0> one_through_three = numbers.slice(0, 3)
=> [1, 2, 3]
irb(main):003:0> one_through_three
=> [1, 2, 3]
irb(main):004:0> numbers
=> [1, 2, 3, 4, 5]

As you see, the slice method didn't modify the numbers array but did return a value :)

I hope you understand.

Good luck!

~Alex