Editing Condition precedent

A '''condition precedent''' is an event or state of affairs that is required before something else will occur. In [[contract law]], a condition precedent is an event which must occur, unless its non-occurrence is excused, before performance under a contract becomes due, i.e., before any contractual duty exists.<ref>[[Restatement (Second) of Contracts]] § 224</ref>

In estate and trust law, it is a provision in a will or trust that prevents the vesting of a gift or bequest until something occurs or fails to occur, e.g. the attainment of a certain age or the predecease of another person. For comparison, a [[condition subsequent]] brings a duty to an end whereas a condition precedent initiates a duty.

In computing, a [[while loop]] is an instruction to check a condition precedent, then execute an action only if that check [[Boolean algebra|evaluates to 'true']]; after which execution, [[Control flow|control then returns]] to the beginning of the loop and the cycle of check and conditional execution begins again. By contrast, a [[do while loop]] first executes the action, next checks a [[condition subsequent]], then returns control to the beginning of the loop if the check evaluated to 'true'. Either loop ends once a check is evaluated to 'false', after which control flow proceeds onward, now "outside" of the loop instruction.

==Cases==
*''[[Poussard v Spiers and Pond]]'' (1876) 1 QBD 410

==See also==
*[[Condition subsequent]]
*[[Necessary condition]]
*[[Sufficient condition]]

==Notes==
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[[Category:Contract law]]
[[Category:Property law]]
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