IsResultComputed

IsResultComputed(X)

Returns True (1) when the result value for variable X has already been computed and is currently cached in memory, False (0) otherwise.

When evaluated from Mid-Mode, it returns true when the Mid-value of X is already computed. When evaluated from Sample-Mode, it returns true when the Sample-value of X is already computed. Hence, the following two forms test specifically for Mid or Sample:

Sample( IsResultComputed(X) )
Mid( IsResultComputed(X) )

Notes

Generally if you attempt to read the value of the midValue or probValue attributes, using e.g., midValue of X, it will trigger the computation of X if the value is not already computed. This function is required to circumvent this problem.

ADE

From ADE, this function is also the method for testing whether a value is already computed and cached. You can do this either from typescript, e.g.:

ade.SendCommand("IsResultComputed(Va1)")

or you can use the CAObject::Evaluate method, e.g.:

CAObject va1 = ade.Get("Va1");
if (va1.Evaluate("IsResultComputed('Va1')").AtomicValue()) {
  ...
}