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Comments

沒用的 Code 就刪，git有存了

Bad:

do_stuff
# do_other_stuff
# do_some_more_stuff
# do_so_much_stuff

Good:

do_stuff

Git log

Bad:

# 2016-12-20: Removed monads, didn't understand them (RM)
# 2016-10-01: Improved using special monads (JP)
# 2016-02-03: Removed type-checking (LI)
# 2015-03-14: Added combine with type-checking (JR)
def combine(a, b)
  a + b
end

Good:

def combine(a, b)
  a + b
end