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Jurassic World: Dominion Dominates Fandom Wikis - The Loop
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Expect Precondition With Reason[]
Use this statement at the start of a handler to check that necessary preconditions for the handler are satisfied. For example, the handler may require that its parameters have a particular structure or fall within a particular range, or may need the system to be in a specific state.
If the condition is false, an error will be thrown including the Reason for the check.
Example:
-- Draw a random variate from the Bernoulli distribution with -- parameter pParam. A Bernoulli variate may be 0 or 1; the -- parameter pParam is the probability that the result is 1. handler BernoulliVariate(in pParam as Number) returns Number expect (pParam >= 0 and pParam <= 1) because "Bernoulli parameter must be a probability in [0,1]" if (any number <= pParam) then return 1 else return 0 end if end handler