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feat(curriculum): add JavaScript Functional Programming quiz (#56497)
Co-authored-by: Naomi the Technomancer <accounts+github@nhcarrigan.com>
This commit is contained in:
Olibhia Ghosh
+133
-100
@@ -17,439 +17,472 @@ Answer all of the questions below correctly to pass the quiz.
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#### --text--
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Placeholder question
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What is a pure function?
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#### --distractors--
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Placeholder distractor 1
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A function that modifies global variables
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---
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Placeholder distractor 2
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A function that prints to the console
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---
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Placeholder distractor 3
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A function that changes its behavior based on external factors
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#### --answer--
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Placeholder answer
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A function that always returns the same output for the same input and produces no side effects
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### --question--
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#### --text--
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Placeholder question
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Which of the following is a characteristic of a pure function?
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#### --distractors--
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Placeholder distractor 1
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It has side effects
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---
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Placeholder distractor 2
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It relies on global state
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---
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Placeholder distractor 3
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It modifies its input parameters
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#### --answer--
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Placeholder answer
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Its output depends solely on its input arguments
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### --question--
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#### --text--
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Placeholder question
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What is a side effect in functional programming?
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#### --distractors--
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Placeholder distractor 1
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An unexpected error in the code
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---
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Placeholder distractor 2
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A function that takes too long to execute
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---
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Placeholder distractor 3
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A recursive function call
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#### --answer--
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Placeholder answer
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A change in program state or interaction with the outside world
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### --question--
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#### --text--
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Placeholder question
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Which of the following is an example of a side effect?
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#### --distractors--
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Placeholder distractor 1
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Returning a value from a function
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---
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Placeholder distractor 2
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Creating a new object within a function
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---
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Placeholder distractor 3
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Using a local variable
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#### --answer--
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Placeholder answer
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Writing to a file
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### --question--
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#### --text--
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Placeholder question
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What is currying in functional programming?
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#### --distractors--
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Placeholder distractor 1
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A technique for cooking functions
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---
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Placeholder distractor 2
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A method for optimizing recursive functions
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---
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Placeholder distractor 3
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A way to combine multiple functions into one
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#### --answer--
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Placeholder answer
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The process of transforming a function with multiple arguments into a sequence of functions, each with a single argument
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### --question--
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#### --text--
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Placeholder question
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In the context of pure functions, what does "referential transparency" mean?
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#### --distractors--
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Placeholder distractor 1
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The function's code is visible to other parts of the program
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---
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Placeholder distractor 2
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The function references external variables transparently
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---
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Placeholder distractor 3
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The function's name clearly indicates its purpose
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#### --answer--
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Placeholder answer
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The function can be replaced with its corresponding value without changing the program's behavior
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### --question--
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#### --text--
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Placeholder question
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Which of the following is NOT a benefit of using pure functions?
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#### --distractors--
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Placeholder distractor 1
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Easier to test
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---
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Placeholder distractor 2
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More predictable behavior
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---
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Placeholder distractor 3
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Easier to reason about
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#### --answer--
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Placeholder answer
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Improved performance in all cases
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### --question--
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#### --text--
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Placeholder question
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What is the output of this pure function?
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```javascript
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const add = (a, b) => a + b;
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console.log(add(2, 5));
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```
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#### --distractors--
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Placeholder distractor 1
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`3`
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---
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Placeholder distractor 2
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`4`
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---
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Placeholder distractor 3
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`undefined`
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#### --answer--
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Placeholder answer
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`7`
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### --question--
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#### --text--
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Placeholder question
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Which statement about currying is true?
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#### --distractors--
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Placeholder distractor 1
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Currying always improves performance
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---
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Placeholder distractor 2
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Curried functions are always pure functions
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---
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Placeholder distractor 3
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Currying is only possible in functional programming languages
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#### --answer--
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Placeholder answer
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Currying transforms a function with multiple arguments into a sequence of functions
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### --question--
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#### --text--
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Placeholder question
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What is a potential side effect of the following function?
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```javascript
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const greet = (name) => {
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console.log(`Hello, ${name}!`);
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};
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```
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#### --distractors--
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Placeholder distractor 1
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It modifies a global variable
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---
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Placeholder distractor 2
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It changes the input parameter
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---
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Placeholder distractor 3
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It returns a value
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#### --answer--
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Placeholder answer
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It interacts with the console (I/O operation)
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### --question--
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#### --text--
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Placeholder question
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In functional programming, what is function composition?
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#### --distractors--
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Placeholder distractor 1
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Writing functions with multiple arguments
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---
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Placeholder distractor 2
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Declaring functions inside other functions
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---
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Placeholder distractor 3
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Using arrow function syntax
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#### --answer--
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Placeholder answer
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Combining two or more functions to create a new function
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### --question--
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#### --text--
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Placeholder question
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Which of the following is an example of a pure function?
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#### --distractors--
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Placeholder distractor 1
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```javascript
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const random = () => Math.random();
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```
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---
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Placeholder distractor 2
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```javascript
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const log = (x) => console.log(x);
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```
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---
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Placeholder distractor 3
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```javascript
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let count = 0;
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const increment = () => ++count;
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```
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#### --answer--
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Placeholder answer
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```javascript
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const double = (x) => x * 2;
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```
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### --question--
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#### --text--
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Placeholder question
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What is the primary goal of currying?
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#### --distractors--
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Placeholder distractor 1
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To improve code readability
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---
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Placeholder distractor 2
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To create functions with fewer arguments
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---
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Placeholder distractor 3
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To eliminate the need for higher-order functions
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#### --answer--
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Placeholder answer
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To enable partial application of functions
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### --question--
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#### --text--
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Placeholder question
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Which statement about side effects is FALSE?
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#### --distractors--
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Placeholder distractor 1
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Side effects make code harder to test
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---
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Placeholder distractor 2
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Modifying a global variable is a side effect
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---
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Placeholder distractor 3
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Reading from a database can be considered a side effect
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#### --answer--
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Placeholder answer
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Pure functions can have side effects
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### --question--
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#### --text--
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Placeholder question
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What is the result of currying the following function?
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```javascript
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const add = (a, b, c) => a + b + c;
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```
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#### --distractors--
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Placeholder distractor 1
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```javascript
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const curried = (a, b, c) => a() + b() + c();
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```
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---
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Placeholder distractor 2
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```javascript
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const curried = a => (b, c) => a + b + c;
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```
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---
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Placeholder distractor 3
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```javascript
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const curried = (a, b) => c => a + b + c;
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```
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#### --answer--
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Placeholder answer
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```javascript
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const curried = a => b => c => a + b + c;
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```
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### --question--
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#### --text--
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Placeholder question
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Which of the following is NOT a side effect?
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#### --distractors--
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Placeholder distractor 1
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Modifying the DOM
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---
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Placeholder distractor 2
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Sending an HTTP request
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---
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Placeholder distractor 3
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Changing the value of a global variable
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#### --answer--
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Placeholder answer
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Creating a new object and returning it
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### --question--
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#### --text--
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Placeholder question
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What is a higher-order function?
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#### --distractors--
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Placeholder distractor 1
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A function that takes longer to execute
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---
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Placeholder distractor 2
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A function with more than three arguments
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---
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Placeholder distractor 3
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A function that uses advanced JavaScript features
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#### --answer--
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Placeholder answer
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A function that returns another function
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### --question--
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#### --text--
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Placeholder question
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Which of the following is a key principle of functional programming?
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#### --distractors--
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Placeholder distractor 1
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Modifying global variables frequently
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---
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Placeholder distractor 2
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Using mutable data structures extensively
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---
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Placeholder distractor 3
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Emphasizing object-oriented inheritance
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#### --answer--
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Placeholder answer
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Avoiding side effects and using immutable data
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### --question--
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#### --text--
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Placeholder question
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What is the main advantage of using pure functions?
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#### --distractors--
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Placeholder distractor 1
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They always execute faster than impure functions
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---
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Placeholder distractor 2
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They can access and modify global state easily
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---
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Placeholder distractor 3
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They can perform I/O operations more efficiently
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#### --answer--
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Placeholder answer
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They are easier to test and reason about
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### --question--
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#### --text--
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Placeholder question
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In the context of functional programming, what does "immutability" mean?
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#### --distractors--
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Placeholder distractor 1
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Variables can be declared but not assigned
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---
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Placeholder distractor 2
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Functions cannot be modified at runtime
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---
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Placeholder distractor 3
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Objects cannot have methods
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#### --answer--
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Placeholder answer
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Data cannot be changed after it's created
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