How To Decide Who To Friend on Facebook, LinkedIn, and Twitter

From
StackOverflow:

You mention cutting with yy and complain that you almost never want to cut
whole lines. In fact programmers, editing source code, very often want to
work on whole lines, ranges of lines and blocks of code. However, yy is only
one of many way to yank text into the anonymous copy buffer (or “register”
as it’s called in vi).

The “Zen” of vi is that you’re speaking a language. The initial y is
a verb. The statement yy is a simple statement which is, essentially, an
abbreviation for 0 y$:

This can also be expressed as dd P (delete the current line and paste a copy
back into place; leaving a copy in the anonymous register as a side effect).
The y and d “verbs” take any movement as their “subject.” Thus yW is “yank
from here (the cursor) to the end of the current/next (big) word” and y’a is
“yank from here to the line containing the mark named ‘a‘.”

If you only understand basic up, down, left, and right cursor movements then
vi will be no more productive than a copy of “notepad” for you.

[ NOTE: You may also be interested in
my Vim Primer
here. ]