Referenced from lesson Method Chaining

For the word problems below, assume you have animalA and animalB defined in your code.

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.

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…​

# name-has-s::____________________->_______

# __________________________________________________________________

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 name-has-s(r):

__string-contains(r["name"], "s")

end

These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, and 1738598). CCbadge Bootstrap:Data Science by Emmanuel Schanzer, Nancy Pfenning, Emma Youndtsmith, Jennifer Poole, Shriram Krishnamurthi, Joe Politz, Ben Lerner, Flannery Denny, and Dorai Sitaram with help from Eric Allatta and Joy Straub is licensed under a Creative Commons 4.0 Unported License. Based on a work at www.BootstrapWorld.org. Permissions beyond the scope of this license may be available by contacting schanzer@BootstrapWorld.org.