non-www to www with .htaccess

I don’t know how many times I have been searching for this piece of code hahaha….
There is few ways to make this kind of redirection with .htaccess, but i think this way is universal and requires no other setup and it works without changing anything.

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]