Identifying last loop when using for each

Question

I want to do something different with the last loop iteration when performing \'foreach\' on an object. I\'m using Ruby but the same goes for C#, Java etc.

Answer 1

Use join whenever possible.

Most often the delimiter is the same between all elements, just join them together with the corresponding function in your language.

Ruby example,

puts array.join(", ")

This should cover 99% of all cases, and if not split the array into head and tail.

Ruby example,

*head, tail = array
head.each { |each| put "looping: " << each }
puts "last element: " << tail