Unable to match one or more whitespaces in Vim

Question

I want match spaces at the beginning of lines in Vim

PseudoCode of what I want to do

^( )*

I know the following fr

Answer 1

Typing

/^ \+

In command mode will match one or more space characters at the beginning of a line.

Typing

/^\s\+

In command mode will match one or more whitespace characters (tabs etc. as well as spaces) at the beginning of a line.