Referenced from lesson Defining Table Functions

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…​

# lookup-fixed::Row->Boolean

# Consumes an animal, and tells whether it is fixed

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). CCbadge Bootstrap:Data Science by the Bootstrap Community is licensed under a Creative Commons 4.0 Unported License. This license does not grant permission to run training or professional development. Offering training or professional development with materials substantially derived from Bootstrap must be approved in writing by a Bootstrap Director. Permissions beyond the scope of this license, such as to run training, may be available by contacting contact@BootstrapWorld.org.