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JodiWarrenJodiWarren
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Solve all parts of Exercise 4
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‎04 - Array Cardio Day 1/script.js

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// Get your shorts on - this is an array workout!
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// ## Array Cardio Day 1
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var __assign = (this && this.__assign) || function () {
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__assign = Object.assign || function(t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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t[p] = s[p];
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}
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return t;
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};
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return __assign.apply(this, arguments);
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};
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// Some data we can work with
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var inventors = [
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{ first: 'Albert', last: 'Einstein', year: 1879, passed: 1955 },
@@ -16,19 +27,78 @@ var inventors = [
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{ first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 }
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];
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var people = ['Beck, Glenn', 'Becker, Carl', 'Beckett, Samuel', 'Beddoes, Mick', 'Beecher, Henry', 'Beethoven, Ludwig', 'Begin, Menachem', 'Belloc, Hilaire', 'Bellow, Saul', 'Benchley, Robert', 'Benenson, Peter', 'Ben-Gurion, David', 'Benjamin, Walter', 'Benn, Tony', 'Bennington, Chester', 'Benson, Leana', 'Bent, Silas', 'Bentsen, Lloyd', 'Berger, Ric', 'Bergman, Ingmar', 'Berio, Luciano', 'Berle, Milton', 'Berlin, Irving', 'Berne, Eric', 'Bernhard, Sandra', 'Berra, Yogi', 'Berry, Halle', 'Berry, Wendell', 'Bethea, Erin', 'Bevan, Aneurin', 'Bevel, Ken', 'Biden, Joseph', 'Bierce, Ambrose', 'Biko, Steve', 'Billings, Josh', 'Biondo, Frank', 'Birrell, Augustine', 'Black, Elk', 'Blair, Robert', 'Blair, Tony', 'Blake, William'];
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var firstXChars = function (firstNumber) { return function (input) { return input.toString().slice(0, firstNumber); }; };
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var test = function (a, b) { return (a === b); };
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var firstTwoChars = firstXChars(2);
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// Array.prototype.filter()
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// 1. Filter the list of inventors for those who were born in the 1500's
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var bornIn1500s = function (person) { return test(firstTwoChars(person.year), '15'); };
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var inventorsBornIn1500s = inventors.filter(bornIn1500s);
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console.log("inventorsBornIn1500s");
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console.table(inventorsBornIn1500s);
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// Array.prototype.map()
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// 2. Give us an array of the inventors' first and last names
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var combineName = function (person) { return person.first + " " + person.last; };
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var inventorsNames = inventors.map(combineName);
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console.log({ inventorsNames: inventorsNames });
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// Array.prototype.sort()
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// 3. Sort the inventors by birthdate, oldest to youngest
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/**
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* Sort function builder
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* @param callback
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*/
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var sortCallback = function (callback) {
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return function (compareType) {
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return function (a, b) { return compareType(callback(a), callback(b)); };
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};
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}; // Last, perform the actual comparison
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var sortNumberAsc = function (a, b) { return a - b; };
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var sortKey = function (key) { return sortCallback(function (value) { return value[key]; }); };
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var sortYearsAsc = sortKey('year')(sortNumberAsc);
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var inventorsSortedByBirthdate = inventors.sort(sortYearsAsc);
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console.log("inventorsSortedByBirthdate");
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console.table(inventorsSortedByBirthdate);
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// Array.prototype.reduce()
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// 4. How many years did all the inventors live?
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var personLifespan = function (person) { return person.passed - person.year; };
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var personArrayReducer = function (acc, currVal) { return acc + personLifespan(currVal); };
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var totalInventorLifespan = inventors.reduce(personArrayReducer, 0);
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console.log({ totalInventorLifespan: totalInventorLifespan });
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// 5. Sort the inventors by years lived
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var appendLifespan = function (person) { return (__assign({ lifespan: personLifespan(person) }, person)); };
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var sortByLifespan = sortCallback(personLifespan)(sortNumberAsc);
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var inventorsSortedByYearsLived = inventors
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// .map(appendLifespan)
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.sort(sortByLifespan);
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console.log("inventorsSortedByYearsLived");
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console.table(inventorsSortedByYearsLived);
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// 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
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// https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
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var $ = function (selector) { return [].slice.call(document.querySelectorAll(selector)); };
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var containsText = function (text) { return function (element) { return element.innerText.indexOf(text) > -1; }; };
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var containsDe = containsText('de');
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var boulevardsWithDe = $('.mw-category-group a').filter(containsDe);
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console.log(boulevardsWithDe);
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// 7. sort Exercise
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// Sort the people alphabetically by last name
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var sortAlphaAsc = function (a, b) { return a > b ? 1 : a < b ? -1 : 0; };
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var sortByFirstElement = sortCallback(function (array) { return array[0]; });
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var sortByFirstElementAlpha = sortByFirstElement(sortAlphaAsc);
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var splitOnComma = function (string) { return string.split(','); };
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var joinWithComma = function (array) { return array.join(', '); };
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var peopleByLastName = people
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.map(splitOnComma)
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.sort(sortByFirstElementAlpha)
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.map(joinWithComma);
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console.table(peopleByLastName);
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// 8. Reduce Exercise
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// Sum up the instances of each of these
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var data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck'];
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var dataCount = data.reduce(function (acc, currVal) {
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if (!acc[currVal]) {
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acc[currVal] = 1;
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}
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acc[currVal] = acc[currVal] + 1;
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return acc;
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}, {});
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console.table(dataCount);

‎04 - Array Cardio Day 1/script.ts

Lines changed: 76 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -20,27 +20,102 @@ const inventors = [
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const people = ['Beck, Glenn', 'Becker, Carl', 'Beckett, Samuel', 'Beddoes, Mick', 'Beecher, Henry', 'Beethoven, Ludwig', 'Begin, Menachem', 'Belloc, Hilaire', 'Bellow, Saul', 'Benchley, Robert', 'Benenson, Peter', 'Ben-Gurion, David', 'Benjamin, Walter', 'Benn, Tony', 'Bennington, Chester', 'Benson, Leana', 'Bent, Silas', 'Bentsen, Lloyd', 'Berger, Ric', 'Bergman, Ingmar', 'Berio, Luciano', 'Berle, Milton', 'Berlin, Irving', 'Berne, Eric', 'Bernhard, Sandra', 'Berra, Yogi', 'Berry, Halle', 'Berry, Wendell', 'Bethea, Erin', 'Bevan, Aneurin', 'Bevel, Ken', 'Biden, Joseph', 'Bierce, Ambrose', 'Biko, Steve', 'Billings, Josh', 'Biondo, Frank', 'Birrell, Augustine', 'Black, Elk', 'Blair, Robert', 'Blair, Tony', 'Blake, William'];
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interface Person {
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first: string;
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last: string;
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year: number;
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passed: number;
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}
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const firstXChars = (firstNumber: number) => (input: string | number) => input.toString().slice(0, firstNumber);
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const test = (a, b) => (a === b);
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const firstTwoChars = firstXChars(2);
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// Array.prototype.filter()
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// 1. Filter the list of inventors for those who were born in the 1500's
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const bornIn1500s = (person: Person) => test(firstTwoChars(person.year), '15' )
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const inventorsBornIn1500s = inventors.filter(bornIn1500s);
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console.log(`inventorsBornIn1500s`);
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console.table(inventorsBornIn1500s);
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// Array.prototype.map()
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// 2. Give us an array of the inventors' first and last names
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const combineName = (person: Person) => `${person.first} ${person.last}`;
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const inventorsNames = inventors.map(combineName);
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console.log({inventorsNames});
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// Array.prototype.sort()
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// 3. Sort the inventors by birthdate, oldest to youngest
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/**
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* Sort function builder
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* @param callback
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*/
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const sortCallback =
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(callback: (a: any) => any) => // First, curry with callback saved
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(compareType: (a: any, b: any) => any) => // Second, curry with comparison function
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(a, b) => compareType(callback(a), callback(b)); // Last, perform the actual comparison
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const sortNumberAsc = (a: number, b: number) => a - b;
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const sortKey = (key: string) => sortCallback(value => value[key]);
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const sortYearsAsc = sortKey('year')(sortNumberAsc);
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const inventorsSortedByBirthdate = inventors.sort(sortYearsAsc);
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console.log(`inventorsSortedByBirthdate`);
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console.table(inventorsSortedByBirthdate);
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// Array.prototype.reduce()
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// 4. How many years did all the inventors live?
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const personLifespan = (person: Person) => person.passed - person.year;
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const personArrayReducer = (acc, currVal) => acc + personLifespan(currVal);
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const totalInventorLifespan = inventors.reduce(personArrayReducer, 0);
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console.log({totalInventorLifespan});
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// 5. Sort the inventors by years lived
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const appendLifespan = (person) => ({
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lifespan: personLifespan(person),
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...person
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})
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const sortByLifespan = sortCallback(personLifespan)(sortNumberAsc);
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const inventorsSortedByYearsLived = inventors
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// .map(appendLifespan)
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.sort(sortByLifespan);
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console.log(`inventorsSortedByYearsLived`);
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console.table(inventorsSortedByYearsLived);
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// 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
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// https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
39-
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const $ = (selector) => [].slice.call(document.querySelectorAll(selector));
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const containsText = (text: string) => (element: HTMLElement) => element.innerText.indexOf(text) > -1;
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const containsDe = containsText('de');
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const boulevardsWithDe = $('.mw-category-group a').filter(containsDe);
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console.log(boulevardsWithDe);
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// 7. sort Exercise
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// Sort the people alphabetically by last name
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const sortAlphaAsc = (a, b) => a > b ? 1 : a < b ? -1 : 0;
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const sortByFirstElement = sortCallback((array: any[]) => array[0]);
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const sortByFirstElementAlpha = sortByFirstElement(sortAlphaAsc);
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const splitOnComma = (string: string) => string.split(',');
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const joinWithComma = (array: any[]) => array.join(', ');
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const peopleByLastName = people
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.map(splitOnComma)
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.sort(sortByFirstElementAlpha)
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.map(joinWithComma);
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console.table(peopleByLastName);
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// 8. Reduce Exercise
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// Sum up the instances of each of these
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const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
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const dataCount = data.reduce((acc, currVal) => {
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if (!acc[currVal]) {
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acc[currVal] = 1;
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}
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acc[currVal] = acc[currVal] + 1;
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return acc;
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}, {});
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console.table(dataCount);

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