Define a function called is-old, which consumes a Row of the animals table and computes whether it is more than 12 years old. HINT: use predefined rows like old-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
Define a function called name-has-s, which returns true if an animal’s name contains the letter "s". HINT: The name of the animal in cat-row is "Sasha" and the name of the animal in dog-row is "Toggle".
Contract and Purpose Statement |
Every contract has three parts…
__________::___->_______
_
Examples |
Write some examples, then circle and label what changes…
examples:
name-has-s (cat-row) is _______________________________________
name-has-s (dog-row) is _________________________________________
end
Definition |
Write the definition, giving variable names to all your input values…
fun name-has-s(r):
_______________________________
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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