Referenced from lesson Defining Table Functions (Spring, 2021)
For the word problems below, assume fixed and unfixed are already defined as data rows.
Directions: Define a function called lookup-fixed, which looks up whether or not an animal is fixed.
Contract and Purpose Statement |
Every contract has three parts…
# ____________::___->_______
# __________________________________________________
Examples |
Write some examples, then circle and label what changes…
examples:
__lookup-fixed (fixed-row) is_fixed-row["fixed"]
__lookup-fixed (unfixed-row) is_unfixed-row["fixed"]
end
Definition |
Write the definition, giving variable names to all your input values…
fun lookup-fixed(r):
__r["fixed"]
end
Directions: Define a function called lookup-name, which consumes a Row of the animals table and looks up the name of that animal.
Contract and Purpose Statement |
Every contract has three parts…
# lookup-name::Row->String
# Consumes an animal, and looks up the name
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, and 1738598). 
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