RCR (example)


TITLE
obsoleting "proc" (RCR#1)

ABSTRACT
we have to remove "proc" function to avoid confusion.

MOTIVATION
when we explain Proc to the beginners, they (and we) expect "proc" and "Proc.new" are same. but they are not.

PROPOSAL
to avoid confusion, I propose to obsolete "proc", where "lambda" remains unchanged.  by "obsolete", I mean adding warning at 1.8, removing it from 1.9.  maybe adding new function "func" instead of "proc" is a good idea.

RATIONALE
"Proc.new" and "proc" are too similar to behave differently.