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52 changes: 49 additions & 3 deletions assignments/array-methods.js
Original file line number Diff line number Diff line change
Expand Up @@ -56,28 +56,74 @@ const runners = [{"id":1,"first_name":"Charmain","last_name":"Seiler","email":"c
// ==== Challenge 1: Use .forEach() ====
// The event director needs both the first and last names of each runner for their running bibs. Combine both the first and last names into a new array called fullName.
let fullName = [];
console.log(fullName);

runners.forEach(function(item){
fullName.push(`${item.first_name} ${item.last_name}`)
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Perfect.

})

console.log(fullName.sort());

// ==== Challenge 2: Use .map() ====
// The event director needs to have all the runner's first names converted to uppercase because the director BECAME DRUNK WITH POWER. Convert each first name into all caps and log the result
let allCaps = [];
console.log(allCaps);

runners.map(function(item){
return allCaps.push(item.first_name.toLocaleUpperCase());
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toUpperCase please, I know vscode suggests toLocaleUpperCase but compare and contrast the two in the documentation.

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And you're doing too much, either return or push. Here a return would be appropriate because map returns a new array.

});

console.log(allCaps.sort());

// ==== Challenge 3: Use .filter() ====
// The large shirts won't be available for the event due to an ordering issue. Get a list of runners with large sized shirts so they can choose a different size. Return an array named largeShirts that contains information about the runners that have a shirt size of L and log the result
let largeShirts = [];

runners.filter(function(item){
return largeShirts.push(item.shirt_size !== "L");
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Filter has a return, use that for your assignment not a push.

});

console.log(largeShirts);

// ==== Challenge 4: Use .reduce() ====
// The donations need to be tallied up and reported for tax purposes. Add up all the donations into a ticketPriceTotal array and log the result
let ticketPriceTotal = [];

runners.reduce(function(item1, item){
return ticketPriceTotal.push(item1 + item.donation);
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I'd like you to try this again.

},0);

console.log(ticketPriceTotal);

// ==== Challenge 5: Be Creative ====
// Now that you have used .forEach(), .map(), .filter(), and .reduce(). I want you to think of potential problems you could solve given the data set and the 5k fun run theme. Try to solve 3 unique problems using one or many of the array methods listed above.

// Problem 1
// Get donations under 10

let donationsUnder = [];

runners.filter(function(item){
return donationsUnder.push(item.donation < 150);
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I'd like you to try this again, and seek disambiguation.

});

console.log(donationsUnder)

// Problem 2
//Boss needs every email
let newEmail = [];

runners.map(function(item){
return newEmail.push(item.email);
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And this one too.

});

console.log(newEmail)

// Problem 3
//Boss needs a new list of all companies

let allCompanies = [];

runners.forEach(function(item){
allCompanies.push(item.company_name);
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👍

});

// Problem 3
console.log(allCompanies);
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All in all on this page, I'd like you to spend more time in the documentation before you use the available methods. Very close but some mixing of paradyms, I'm not even suprised though, I expect it.

41 changes: 41 additions & 0 deletions assignments/closure.js
Original file line number Diff line number Diff line change
@@ -1,19 +1,60 @@
// ==== Challenge 1: Write your own closure ====
// Write a simple closure of your own creation. Keep it simple!
function profile() {
let newProfile = function(){console.log("Hello, My name is John and I am from Columbus,OH");
}
let greeting = 'Hello, How are you doing';
return newProfile;
}
let newGreeting = profile();
console.log(newGreeting());
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Looks good. 👍



// ==== Challenge 2: Create a counter function ====
const counter = () => {
// Return a function that when invoked increments and returns a counter variable.
let count = 0;
return () => {
count++;
return count;
}
};
// Example usage: const newCounter = counter();
// newCounter(); // 1
// newCounter(); // 2
const newCounter = counter();
console.log(newCounter());
console.log(newCounter());
console.log(newCounter());
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👍



// ==== Challenge 3: Create a counter function with an object that can increment and decrement ====
const counterFactory = () => {
// Return an object that has two methods called `increment` and `decrement`.
// `increment` should increment a counter variable in closure scope and return it.
// `decrement` should decrement the counter variable and return it.
let count = 0;
return () => {
count++;
return count;
}
};

const reverseCounter = () => {
let count = 0;
return () => {
count--;
return count;
}
};


const newCounterFactory = counterFactory();
const reverseNewCounterFactory = reverseCounter();
console.log(newCounterFactory());
console.log(newCounterFactory());
console.log(newCounterFactory());
console.log(reverseNewCounterFactory());
console.log(reverseNewCounterFactory());
console.log(newCounterFactory());
console.log(reverseNewCounterFactory())
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Functionally equivilent but I'd instead try using

counterFactory.increment = counterFactory();
counterFactory.decrement = reverseCounter();
``` to salvage the composition
But what we were looking for is the counterFactory to return an object that contains the functions increment and decrement.

14 changes: 13 additions & 1 deletion assignments/function-conversion.js
Original file line number Diff line number Diff line change
Expand Up @@ -2,22 +2,34 @@

// let myFunction = function () {};

let myfunction = () => {};

// let anotherFunction = function (param) {
// return param;
// };

let anotherFunction = (param) => param;

// let add = function (param1, param2) {
// return param1 + param2;
// };
// add(1,2);

let add = (param1, param2) => param1 + param2;

// let subtract = function (param1, param2) {
// return param1 + param2;
// };
// subtract(1,2);

let subtract = (param1, param2) => param1 - param2;

exampleArray = [1,2,3,4];
// const triple = exampleArray.map(function (num) {
// return num * 3;
// });
// console.log(triple);
// console.log(triple);

const sum = exampleArray.map(x => x * 3);

console.log(sum);
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This page is great, 💯