Ride well out into the lane where the cars go?

You are correct to fear doors. When there is a line of parked cars, ride about
3.5 feet to the left of the doors, even if cars are coming up in your lane.
Watch for heads, and wheels turned left. Most often, a 3.5-foot gap from the
parked cars will still allow enough room for cars to pass easily on your left.
Find a different route rather than ride on narrow streets with parked cars.
Lines of parked cars are hazardous for many reasons other than doors.

Any Toronto people reading this thread? The major east-west streets
downtown are all too narrow to ride that far out from the parked cars
unless you ride in the only traffic lane. The problem is compounded
because these streets also have streetcar tracks (King, Queen, Dundas,
College) so if you ride too far over you're also hitting the track.
(and presumably the streetcar when you catch up with it ) I ride in
the parking lane fairly close to the cars keeping an eye for cues
someone is about to open a door and merging further left if traffic is
clear. Any better ideas for avoiding dooring on these streets?

Tanya