Referenced from lesson Choosing Your Dataset (Spring, 2021)
Write helper functions for your dataset, which you can use to define subsets. Since all helper functions will consume Rows, their Domains have already been filled in for you.
Directions: Define a function called , which consumes a Row of the table and produces .
Contract and Purpose Statement |
Every contract has three parts…
# _::Row->_
# _______
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 , which consumes a Row of the table and produces .
Contract and Purpose Statement |
Every contract has three parts…
# _::Row->_
# _______
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: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.