What are some common Ruby methods used in Rails?

What are some common Ruby methods used in Rails?

In Rails, common Ruby methods include map, select, each, and find. These methods help manipulate collections.

Can you explain how the map method works?

Sure! The map method iterates over a collection and transforms each element based on the block you provide, returning a new array.

What about the select method?

The select method filters a collection, returning a new array containing all elements for which the block returns true.

Are there any performance considerations when using these methods?

Yes, using methods like map and select can be less efficient with large datasets. Consider using find_each for better performance.