How to delete everything after the cursor

Question

Say the cursor is []:

A very intelligent turtle
Found programming [U]NIX a hurdle

I want to achieve the same thing as l D in one go:

A very intelligent turtle
Found programming [U]

Is there any shortcut for this? I'd prefer a one keystroke solution, but would also like to note alternative motions.

Similar in title but not in question:
https://stackoverflow.com/questions/30784189/delete-everything-after-the-cursor-or-delete-everything-after-the-current-word

[2.22.22]:
What if you're in insert mode? Say the cursor is now |:

A very intelligent turtle
Found programming U|NIX a hurdle

What I tend to do here is either ESC l D or SPC ESC D.

Answer 1

For a single keystroke I think your only option is a nnoremap s lD or something like that.