Deprecate each_with_index and each_with_object in favor of with_index and with_object
I wonder if we can deprecate
each_with_object and fully recommend
I personally like the shorter forms because they hint that they can be used with more methods than simply
each. People don't need to ask if there's a
map_with_index method, they can just try chaining it the same way and it works! I realized this when teaching new Rubyists, because they often ask those questions.
There is a negligible performance hit.
Lots of code uses
each_with_index but it is a one-character change to use
Forgive me if this has been brought up recently, but I couldn't find any discussion on it.
Updated by trans (Thomas Sawyer) about 5 years ago
If Functors* (https://bugs.ruby-lang.org/issues/6594) could be built into the language proper, then what you suggest should be possible with essentially no performance penalties at all.
(* Not to be confused with the Haskell concept.)