How do you change a line in vim?

Question

Using vim I can change the word my cursor is on by tying cw. I can change the current character with cl. I can change everything inside some brackets with ci{.

I can even change the current and next line with cj. But how do I change just the line that the cursor is on?

I'm looking for something shorter or more efficient than one of these commands: ddko, 0C, 0Da, etc

Answer 1

To delete the current line and start insert mode, use cc. To change everything that comes after the cursor, use either c$ or C

Answer 2

The simplest way to do this is S, or SHIFT-s, as it changes the entire line regardless of the cursor location.

cc works similarly, but is arguably harder to type, with two consecutive non-home row key presses.