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/* Evaluates to 1 if AppleHarvest Date is Before 1st January 2021*/
0
/* and to 0 if it is not not */0
)
Macros
Sometimes we might want to write our own expressions that can be used time and again. To do this we can write a Macro. Instead of a writing the name of each attribute in the expression, instead make it generic by writing $args[1], $args[2] etc.
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