How to get the array index or iteration number with an each iterator?

问题

I'm iterating through an array in ruby with each. Is there an easy way to get the iteration number or array index without going back to a for loop?

回答1:

Ah, got it.

each_with_index

woo!

edit: whoops!

回答2:

For completeness' sake.

Thing.each_with_index {|obj, index_num| puts [obj, index_num].join(" has an index of ")}

来源：https://stackoverflow.com/questions/706115/how-to-get-the-array-index-or-iteration-number-with-an-each-iterator