Vim is a text editor that keeps surprising you. The more you learn about vim,
there is always more to learn. One of the feature that I keep using and find
very interesting is incrementing/decrementing a number in current line. Vim has
<ctrl-a> to increment a number and <ctrl-x> to decrement a number. Just go to a
line with number in it and hit <ctrl-a>/<ctrl-x> to increment/decrement. But
because it is vim, there is definitely more to this command. You can also
provide a number to add/subtract using the same command.
Increment a number
<ctrl-a> to increment one time, we can also use 180<ctrl-a> to add
180 to an existng number on line
Decrement a number
<ctrl-x> to decrement one time, we can also use 180<ctrl-x> to subtract 180
from a number on line