Name(s)_______________________________________________ Period ______ Date ___________________
Project - Make a Library |
Project Description
Libraries let you build functions that you and others can use to help build more powerful apps in lots of situations. As the designer of a library you not only need to know how to program, you also need to think about the many different kinds of programs other people might build.
For this project you will design and build a library of functions around any topic you want. You will have an opportunity to exchange feedback with another group about how you might use their library to design an app. Finally you will answer a few questions about the library you designed.
You will submit as a formative (Jan 25th):
- As a group:
- Your final app library
- Individually
- A video
- A written response
You will submit as a summative (Feb 7th):
- As a group:
- Your final app library
- Individually
- A video
- A written response
Library Requirements
- Your library must contain two or more functions
- At least one function must include
- A loop
- An if-statement
- One or more parameters
- Return
Step 1 - Brainstorm
Your library can be about any topic. If you need some ideas try the list below
- Strings
- Capitalize: Capitalize first letter of each word in a sentence (long string)
- Trim: Remove spaces from beginning and end of a string
- Remove Letter: removes a given letter from a string
- Anything else you'd want to do with a string
- Lists
- Maximum: Find the maximum value in a list
- Minimum: Find the minimum value in a list
- Average: Find the average value in a list
- Count: Count how many times a given value appears in a list
- Combine: Join two lists together in one longer, larger list
- Filter Numbers: Keep numbers in a list greater than or less than a provided value
- Filter Letters: Keep strings in a list that begin with a given letter
- Numbered List: Turn a list into a string with each item numbered and appearing on a different line
- Top 3: Return the three biggest numbers in a list, in sorted order (This can be a little tricky)
- Unique: Return a list of each unique item that appears in (This can be a little tricky)
- Sort: Return the list in sorted order (This can be a little tricky)
- Anything else you'd want to do with a list
- Dataset
- Choose a dataset and build a function that will help a user access or summarize specific information within that dataset
- Something else
- As long as your library does something interesting and valuable
Step 2 - Design
After you've brainstormed the focus of your app, fill in the table below with the list of functions you intend to build.
Function Name Write the name of each function | Description, Parameters, Return Write the comments for this function | Loop, If-statement, Param, Return? At least one function must include all 4 features listed above |
maximum(list) | // Takes a list and returns the largest value that appears in the list // list {list} - the list of items // return {number} - the largest number in the list | Yes this function should include all of these features. |
EvenorOdd | //Test if the numbers from the list are even or odd //if statement test if when the numbers are divided by two it gives a decimal //the return text returns our odd and even numbers in a phrase //the console log calls our function | Yes this function includes all of these features ;) |
PositiveorNeg | //Test if the numbers from the list are positive or negative //if statement test if when the numbers are greater than or less than zero //the return text returns our positive and negative numbers in a phrase //the console log calls our function | Yes this function also includes all of these features ;) |
Step 3 - Build
Program your library. Make sure you do the following.
- Start by building the function that will include all four required features (param, return, if-statement, loop)
- Debug your code as you write it
- Start testing your code early with sample inputs
Step 4 - Test
Write test cases for each of the functions in your library to make sure they return the expected values. Remember that you should include.
- Inputs (arguments) that will result in your functions behaving differently or returning different values
- Inputs (arguments) just before, at, and after cut offs if your conditionals. For example if your code includes the statement (value < 2) then try inputs where value is 1, 2, and 3 to see if the algorithm always behaves as you expect.
Note: Once you are done testing your functions, make sure to comment out any tests you have written into your code to test your library functions before sending your library to a classmate in Step 5.
Step 5 - Share and Feedback
Send your library to a classmate and have them send it to you. You shouldn't need to explain anything about how your library works or what it is for. The documentation should be good enough.
Your reviewer should fill in the information below.
Reviewer Name: _________________________________________________
Yes | Kind Of | No | |
Clear: I can easily understand the overall purpose of the library and each function within it. | |||
Error-Free: Each function in the library works as expected. | |||
Useful: I can think of situations where I would want to use this library |
I like: Give feedback on at least one thing you like in the library
I wish: Give one problem or limitation of the library
What if: Give one idea for how to improve the library
Step 6 - Improve
Based on the feedback above make final improvements to your library.
Step 7 - Acknowledge Collaborators / Sources
It is important to acknowledge any code you write that was developed collaboratively or that you received from another source. In the table below list work you completed with a collaborative partner or got from another source
Name / Source | Lines of Code / Portions of Program Contributed |
Scoring Guidelines
Written Responses (individual) - In the Written Response the student... | |
Responses | Point |
Selected procedure includes a parameter that impacts the functionality of the procedure | /4 |
Selected procedure includes sequencing, selection, and iteration | /4 |
Response 2 explains how the selected procedure accomplishes its task | /4 |
Response 3 Call 1: the response indicates the arguments that are passed, the specific condition that is checked, and the result of the call. | /4 |
Response 3 Call 2: the response indicates the arguments that are passed, the specific condition that is checked, and the result of the call. | /4 |
Video (individual) | |
Video shows program functionality and input/output of the app | /4 |
Program Code | |
Library includes two or more functions that accomplish related tasks | /4 |
All functions include comments that explain the purpose of the function and the parameters | /4 |
All functions include tests that demonstrate the code working as expected | /4 |
At least one functions includes a loop, a conditional, one or more parameters, and a return statement | /4 |
Library code runs without errors | /4 |
Total | /44 |
Computer Science Principles