Hello all.
In one my class I’ve had very simple method:
…
def stored?
!@db.nil?
end
…
And I’ve suddenly noticed (due to profile) that nil? Takes a significant
amount of time here.
Redefining the above method like
def stored?
@db
end
(in if’s it works good) speedups the entire program.
I’m a bit surprized 
Victor.