Feature #8371

Make some enumerators mimic arrays

Added by Ilya Vorontsov over 2 years ago. Updated over 2 years ago.

Assignee:Yukihiro Matsumoto


Some enumerators yields data by one element so that in some way such enumerators can be treated as arrays in some ways. But they are still enumerators, so they doesn't respond to methods each array responds. As an example, there is code I write from time to time:
'Hello world'.each_char.join("\t") and it fails just because I didn't use #to_a.
I propose that enumerators have subclasses (I guess simple extending of enumerator with module can impact perfomance) such as ArrayEnumerator so that String#each_char and #each_line and so on returned not simple Enumerator but ArrayEnumerator which will respond #join and #uniq method.


#1 Updated by Zachary Scott over 2 years ago

  • Status changed from Open to Feedback
  • Assignee set to Yukihiro Matsumoto

There is a discussion on this on #1666

Also available in: Atom PDF