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// ==== Callbacks ====
/* Step 1: Create a higher-order function that accepts a callback
* Create a higher-order function named consume that can take 3 parameters.
* The first two parameters can accept any argument
* The last parameter accepts a callback
* In the body of the function return the callback with the two parameters that you created
*/
const consume = (a, b, c) => {
c(a,b);
}
/* Step 2: Create several functions to callback with consume();
* Create a function named add that returns the sum of two numbers
* Create a function named multiply that returns the product of two numbers
* Create a function named greeting that accepts a first and last name
* and returns "Hello first-name last-name, nice to meet you!"
*/
// Create a function named add that returns the sum of two numbers
const add = (x, y) => {
console.log(x + y)
}
// * Create a function named multiply that returns the product of two numbers
const multiply = (x, y) => {
console.log(x * y)
}
// * Create a function named greeting that accepts a first and last name and returns "Hello first-name last-name, nice to meet you!"
const greeting = (firstName, lastName) => {
console.log(`Hello ${firstName} ${lastName}, nice to meet you!`)
}
/* Step 3: Check your work by un-commenting the following calls to consume(): */
consume(2,2,add); // 4
consume(10,16,multiply); // 160
consume("Mary","Poppins", greeting); // Hello Mary Poppins, nice to meet you!
// ==== Closures ====
// Explain in your own words why `nestedfunction()` can access the variable `internal`.
// Explanation:
/**
* Using the tinted car screen analogy, nested functions have access to all variables and functions
* outside it's scope.
*/
const external = "I'm outside the function";
function myFunction() {
console.log(external);
const internal = "Hello! I'm inside myFunction!";
function nestedFunction() {
console.log(internal);
};
nestedFunction();
}
myFunction();