bswinnerton

" Put this in your .vimrc and whenever you `git commit` you'll see the diff of your commit next to your commit message.
" For the most accurate diffs, use `git config --global commit.verbose true`

" BufRead seems more appropriate here but for some reason the final `wincmd p` doesn't work if we do that.
autocmd VimEnter COMMIT_EDITMSG call OpenCommitMessageDiff()
function OpenCommitMessageDiff()
  " Save the contents of the z register
  let old_z = getreg("z")
  let old_z_type = getregtype("z")

bswinnerton

#  You’re given two integer ranges (x1, x2) and (y1, y2). For example, the ranges (1, 10) and (5, 20). Sum the
#  numbers that exist in both ranges. In our example, we would add up 5, 6, 7, 8, 9 and 10 (for a total of 45) since
#  5, 6, 7, 8, 9 and 10 exist in both ranges.

#The function should look like this (in Ruby):

def sum_of_intersection(x1, x2, y1, y2)
  intersection = (x1..x2).to_a & (y1..y2).to_a
  intersection.inject { |sum, i| sum + i }
end