Understand Functional Programming Terminology

JavaScript
#1

Tell us what’s happening:

help me understand this

Your code so far


/**
 * A long process to prepare green tea.
 * @return {string} A cup of green tea.
 **/
const prepareGreenTea = () => 'greenTea';
const tea4GreenTeamFCC = 27 * prepareGreenTea();
/**
 * A long process to prepare black tea.
 * @return {string} A cup of black tea.
 **/
const prepareBlackTea = () => 'blackTea';

/**
 * Get given number of cups of tea.
 * @param {function():string} prepareTea The type of tea preparing function.
 * @param {number} numOfCups Number of required cups of tea.
 * @return {Array<string>} Given amount of tea cups.
 **/
const getTea = (prepareTea, numOfCups) => {
  const teaCups = [];

  for(let cups = 1; cups <= numOfCups; cups += 1) {
    const teaCup = prepareTea();
    teaCups.push(teaCup);
  }

  return teaCups;
};

// Add your code below this line

const tea4GreenTeamFCC = null; // :(
const tea4BlackTeamFCC = null; // :(

// Add your code above this line

console.log(
  tea4GreenTeamFCC,
  tea4BlackTeamFCC
);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.79 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/functional-programming/understand-functional-programming-terminology

#2

You messed up all your code. You need to update the code where FCC asked you to.

Note: The following line numbers are imaginary and only represent to its actual code and not the @params.

Lines 1  will help you to make a 'Green Tea'
Lines 2  will help you to make a 'Black Tea'

const prepareGreenTea = () => 'greenTea';
const prepareBlackTea = () => 'blackTea';

Line 3 This function is just like a Tea-Creating-Machine it's up to you,
to make a green tea or a black tea and no of cups.

const getTea = (prepareTea, numOfCups) => {
  const teaCups = [];

  for(let cups = 1; cups <= numOfCups; cups += 1) {
    const teaCup = prepareTea();
    teaCups.push(teaCup);
  }

  return teaCups;
};

Line 4: This is where you actually need to write you code.
// Add your code below this line

const tea4GreenTeamFCC = null; //  Prepare 27 cups of green tea
const tea4BlackTeamFCC = null; //  13 cups of black tea

// Add your code above this line

Line 5: Your results will output to console.

console.log(
  tea4GreenTeamFCC,
  tea4BlackTeamFCC
);
#3

Functional Programming is a paradigm, writing all or most of your code using Pure functions.

Read More: https://www.quora.com/What-is-functional-programming

#4

I think the essence of this challenge is to show you how to call a function within a function.

You’ve got three functions there, one prepare green tea and another black tea. The last function gets the tea you prepared, and needed two parameters of which one needs to be a function and the other a number.

1 Like
#5

you have to understand how to use( callback functions or higher order functions ) to pass this challenge .

2 Likes
#6