What are some tips for using Ruby enumerables effectively?

What are some tips for using Ruby enumerables effectively?

Here are a few tips: 1. Use map for transforming collections, 2. Use select to filter elements, and 3. Chain methods for cleaner code.

Can you explain how reduce works in Ruby?

Sure! reduce (or inject) takes an array and combines its elements into a single value, using a block to define how to combine them.

What’s the difference between map and each?

map returns a new array with the results of running the block for each element, while each simply iterates over the elements without returning a new array.

How can I use reject to filter out elements?

You can use reject to return a new array excluding elements that meet a certain condition defined in the block.

Are there any performance considerations when using enumerables?

Yes, some methods can be less efficient with large datasets. It's important to choose the right method based on your needs.