vim: delete all blank space until next non-blank character

Question

Say I have the following code:

    Hello

And I want to make it

Hello

Answer 1

When standing anywhere in the second line (the one that says Hello), press the following keys: ^d0vatgJ. Simply explained:

1. ^ will go to the first non-whitespace character, H
2. d0 will delete to the beginning of the line
3. vat will select the entire tag
4. gJ will join all the lines without inserting spaces

If you start on the H, you can skip the ^ part.