Define a function called is-old, which consumes a Row of the animals table and computes whether it is more than 10 years old. + HINT: use predefined rows like old-row to make your examples easier!
Contract and Purpose Statement |
Every contract has three parts…
is-old::Row->Boolean
_
Examples |
Write some examples, then circle and label what changes…
examples:
______ (_________) is _____________________
______ (_______) is ___________________
end
Definition |
Write the definition, giving variable names to all your input values…
fun ______(_):
_____________
end
These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, 1738598, 2031479, and 1501927). 
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