Referenced from lesson Introduction to Data Structures
Directions: Write a function next-position, which takes in two numbers (an x- and y-coordinate) and returns a DeliveryState, increasing the x-coordinate by 5 and decreasing the y-coordinate by 5.
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, and 1738598). 
Bootstrap:Reactive by Emma Youndtsmith, Emmanuel Schanzer, Kathi Fisler, Shriram Krishnamurthi, Joe Politz and Dorai Sitaram
is licensed under a
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Based on a work at www.BootstrapWorld.org.
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