Example of looking up values in a dictionary
The following statement shows a query that calculates the current value of a basket of stocks based on the most recent prices for those stocks. When using dictionaries in this way, be careful to ensure that all values used as keys are in the dictionary. A missing key value causes a runtime error and the correlator terminates the monitor instance. In the example, it is assumed that the prices stream was filtered to contain prices for only the stocks in the basket.
stream<Tick> basketPrices :=
from p in prices
partition by p.symbol
retain 1
select sum( p.price * basketVolume[t.symbol] );
Contact Support
|
Community
|
Feedback