Define a function called is-dog, which consumes a Row of the animals table and computes whether the animal is a dog. HINT: use predefined rows like dog-row to make your examples easier!
Contract and Purpose Statement |
Every contract has three parts…
is-dog::Row->Boolean
Consumes an animal, and checks whether the species == "dog"
Examples |
Write some examples, then circle and label what changes…
examples:
is-dog (dog-row) is dog-row["species"] == "dog"
is-dog (__________) is ______________________________
end
Definition |
Write the definition, giving variable names to all your input values…
fun ______(_):
_____________________
end
Define a function called is-female, which consumes a Row of the animals table and returns true if the animal is female. HINT: use predefined rows like female-row to make your examples easier!
Contract and Purpose Statement |
Every contract has three parts…
_________::___->_______
_
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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