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What are Ruby enumerators and how do I use them?

An example of an AI chatbot conversation about Ruby enumerators and their usage in programming.

😀
You

What are Ruby enumerators and how do I use them?

MagicBuddy
MagicBuddy

Ruby enumerators are objects that allow you to traverse, search, and sort collections like arrays and hashes. They provide a way to iterate over elements without exposing the underlying structure.

😀
You

Can you give me an example of how to create an enumerator?

MagicBuddy
MagicBuddy

Sure! You can create an enumerator using the Enumerator.new method. For example: my_enum = Enumerator.new { |y| (1..5).each { |i| y << i } }.

😀
You

How do I use the enumerator to get values?

MagicBuddy
MagicBuddy

You can use methods like next to get the next value. For example, my_enum.next will return 1, and calling it again will return 2.

😀
You

Are there any built-in methods for enumerators?

MagicBuddy
MagicBuddy

Yes, Ruby provides several built-in methods for enumerators, such as each, map, select, and inject, which allow you to perform various operations on the collection.

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