When implementing a recursive function in ES6, what considerations should be made regarding stack overflow?

  • Tail call optimization eliminates the risk of stack overflow in all cases.
  • It's essential to handle base cases properly to avoid stack overflow.
  • Stack overflow is unavoidable in recursive functions in ES6.
  • Increasing the stack size is the only solution to prevent overflow.
When implementing recursive functions in ES6, it's crucial to handle base cases effectively to prevent stack overflow. While tail call optimization can help in some cases, it's not universally guaranteed, making proper base case management a fundamental consideration.

__________ recursion refers to a situation where a recursive function calls itself multiple times within a single step.

  • Nested
  • Infinite
  • Deep
  • Tail
In-depth content in the explanation. Recursive functions that call themselves multiple times within a single step are known as deep recursion. This occurs when a function calls itself within a nested structure, leading to multiple recursive calls in one step.

What is functional composition in the context of JavaScript?

  • Combining multiple functions to produce a new function
  • Transforming data types in JavaScript
  • Declaring variables within functions
  • Utilizing loops in JavaScript
Functional composition involves combining multiple functions to produce a new function. This technique is commonly used to create more complex and reusable functions by chaining together simpler ones. It promotes a modular and clean coding style, enhancing code readability and maintainability. Understanding functional composition is crucial for writing efficient and scalable JavaScript code.

In a scenario where multiple API calls are made and you need to wait for all of them to complete, which Promise method would be most appropriate?

  • Promise.all()
  • Promise.race()
  • Promise.any()
  • Promise.resolve()
When dealing with multiple asynchronous operations that should all complete before proceeding, Promise.all() is the appropriate method. It takes an array of promises and resolves when all of them have resolved. This ensures that you wait for all API calls to complete before moving forward.

How do Promises facilitate handling multiple asynchronous AJAX requests concurrently?

  • Promises use a single-threaded model, limiting concurrency.
  • Promises cannot handle multiple asynchronous requests concurrently.
  • Promises allow chaining, enabling sequential handling of requests.
  • Promises support Promise.all() for concurrent handling of multiple requests.
Promises facilitate handling multiple asynchronous AJAX requests concurrently through the Promise.all() method. It takes an array of promises and returns a new promise that fulfills with an array of the resolved values when all promises in the iterable argument have been fulfilled.

In ES6, how does the spread operator enhance the functionality of higher-order functions?

  • Allows the spreading of elements in an array or properties in an object
  • Facilitates the creation of closures within higher-order functions
  • Enables the use of async/await syntax in functions
  • Enhances the performance of recursion in functional programming
The spread operator in ES6 allows the spreading of elements in an array or properties in an object, making it useful for operations like array concatenation and object merging within higher-order functions.

What is the primary purpose of destructuring assignment in ES6?

  • Simplifying the process of extracting values from arrays or objects
  • Declaring variables in a concise manner
  • Improving code readability by using shorthand syntax
  • Allowing variables to be reassigned easily
Destructuring assignment in ES6 is primarily used to simplify the process of extracting values from arrays or objects, making code more concise and readable. It allows you to declare variables and assign values in a single line, improving code structure.

Which keyword is used to define a class in ES6?

  • class
  • type
  • struct
  • interface
In ES6, the class keyword is used to define a class. It provides a cleaner syntax for creating constructor functions and prototypes. Classes allow for easier code organization and inheritance in JavaScript.

A Symbol can be explicitly converted to a string using __________ method.

  • toString()
  • valueOf()
  • convertToString()
  • description()
The correct method to explicitly convert a Symbol to a string is toString(). The toString() method is a built-in method for Symbol instances, which returns the string representation of the Symbol.

How does currying affect the number of arguments a function receives?

  • Increases the number of arguments
  • Decreases the number of arguments
  • Does not affect the number of arguments
  • Allows variable number of arguments
Currying in JavaScript involves breaking down a function with multiple arguments into a series of functions, each taking a single argument. This decreases the number of arguments a function receives, making it more flexible and easier to compose with other functions.