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Brandon Hopper #28
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@@ -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); | ||
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| runners.forEach(function(item){ | ||
| fullName.push(`${item.first_name} ${item.last_name}`) | ||
| }) | ||
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| console.log(fullName.sort()); | ||
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| // ==== 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); | ||
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| runners.map(function(item){ | ||
| return allCaps.push(item.first_name.toLocaleUpperCase()); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. toUpperCase please, I know vscode suggests toLocaleUpperCase but compare and contrast the two in the documentation. There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. And you're doing too much, either return or push. Here a return would be appropriate because map returns a new array. |
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| }); | ||
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| console.log(allCaps.sort()); | ||
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| // ==== 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 = []; | ||
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| runners.filter(function(item){ | ||
| return largeShirts.push(item.shirt_size !== "L"); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Filter has a return, use that for your assignment not a push. |
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| }); | ||
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| console.log(largeShirts); | ||
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| // ==== 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 = []; | ||
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| runners.reduce(function(item1, item){ | ||
| return ticketPriceTotal.push(item1 + item.donation); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I'd like you to try this again. |
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| },0); | ||
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| console.log(ticketPriceTotal); | ||
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| // ==== 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. | ||
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| // Problem 1 | ||
| // Get donations under 10 | ||
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| let donationsUnder = []; | ||
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| runners.filter(function(item){ | ||
| return donationsUnder.push(item.donation < 150); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I'd like you to try this again, and seek disambiguation. |
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| }); | ||
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| console.log(donationsUnder) | ||
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| // Problem 2 | ||
| //Boss needs every email | ||
| let newEmail = []; | ||
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| runners.map(function(item){ | ||
| return newEmail.push(item.email); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. And this one too. |
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| }); | ||
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| console.log(newEmail) | ||
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| // Problem 3 | ||
| //Boss needs a new list of all companies | ||
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| let allCompanies = []; | ||
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| runners.forEach(function(item){ | ||
| allCompanies.push(item.company_name); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 👍 |
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| }); | ||
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| // Problem 3 | ||
| console.log(allCompanies); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 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. |
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| @@ -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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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Looks good. 👍 |
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| // ==== 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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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 👍 |
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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; | ||
| } | ||
| }; | ||
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| const reverseCounter = () => { | ||
| let count = 0; | ||
| return () => { | ||
| count--; | ||
| return count; | ||
| } | ||
| }; | ||
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| 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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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Functionally equivilent but I'd instead try using |
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@@ -2,22 +2,34 @@ | |
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| // let myFunction = function () {}; | ||
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| let myfunction = () => {}; | ||
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| // let anotherFunction = function (param) { | ||
| // return param; | ||
| // }; | ||
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| let anotherFunction = (param) => param; | ||
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| // let add = function (param1, param2) { | ||
| // return param1 + param2; | ||
| // }; | ||
| // add(1,2); | ||
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| let add = (param1, param2) => param1 + param2; | ||
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| // let subtract = function (param1, param2) { | ||
| // return param1 + param2; | ||
| // }; | ||
| // subtract(1,2); | ||
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| let subtract = (param1, param2) => param1 - param2; | ||
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| exampleArray = [1,2,3,4]; | ||
| // const triple = exampleArray.map(function (num) { | ||
| // return num * 3; | ||
| // }); | ||
| // console.log(triple); | ||
| // console.log(triple); | ||
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| const sum = exampleArray.map(x => x * 3); | ||
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| console.log(sum); | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. This page is great, 💯 |
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There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Perfect.