Is it illegal to pull forward out of a parking spot if there is no one parked in front of you?

Is this taking place on private property parking lot (like a supermarket lot) or in a parking location on a public street? If on a private parking lot it would probably not be illegal to pull out of the spot in the manner you say, traffic laws generally do not apply on private parking lots. However, if you do it without due caution and hit someone or something you can be charged with the collision.