Directions: 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
Directions: Define a function called name-has-s, which returns true if an animal’s name contains the letter "s"
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 (young-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, and 1738598). 
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