Let's say a police officer arrests someone, and this person has a religion in which they take drugs. after arresting and putting them in the police car, can the policeman stop by their church along the way to the police station and see if anything illegal is going on?

anticipatory breach of contract

as the name suggests, an anticipatory breach is a breach of contract before the time of performance. so, if a promisor denies to perform his promise and signifies his unwillingness before the time for performance, then it is an anticipatory breach of contract.

and

actual breach of contract

while an anticipatory breach is before the time of performance, an actual breach of contract is on the scheduled time of performance of the contract. an actual breach of contract can be committed either.

hope this . : )