From 544df52891e6eb708e33bbc6b51d196a6dcad1fe Mon Sep 17 00:00:00 2001
From: Lana Trupkina <svtrupkina@gmail.com>
Date: Fri, 12 Mar 2021 17:12:48 +0200
Subject: [PATCH 1/6] HW5_Trupkina(draft)

---
 HW5(OOP_vs_FP)/HW5_Trupkina.js | 236 +++++++++++++++++++++++++++++++++
 1 file changed, 236 insertions(+)
 create mode 100644 HW5(OOP_vs_FP)/HW5_Trupkina.js

diff --git a/HW5(OOP_vs_FP)/HW5_Trupkina.js b/HW5(OOP_vs_FP)/HW5_Trupkina.js
new file mode 100644
index 0000000..b455197
--- /dev/null
+++ b/HW5(OOP_vs_FP)/HW5_Trupkina.js
@@ -0,0 +1,236 @@
+
+// Write two solutions for each problem.
+// _.1 in an iterative style (no higher-order functions)
+// _.2 applying higher-order functions
+
+// 1.
+const arrBirthday = [1998, 1985, 2001, 2006];
+
+//1.1
+function findAgeIn2021(arr) {
+    const arr2021 = [];
+    for (let i = 0; i < arr.length; i++) {
+        arr2021.push(2021 - arr[i]);
+    }
+    return arr2021;
+}
+console.log(findAgeIn2021(arrBirthday));
+//(4) [23, 36, 20, 15]
+
+//1.2 hof
+//create array fhat contain current age in 2021 with hof
+function findAgeIn2021_hof(arr, fn) {
+    const arr2021 = [];
+    for (let i = 0; i < arr.length; i++) {
+        arr2021.push(fn(arr[i]));//call special func for calculate age 
+    }
+    return arr2021;
+}
+function findNowAge(elem) {
+    const ageNow = 2021 - elem;
+    return ageNow;
+}
+console.log(findAgeIn2021_hof(arrBirthday, findNowAge));
+//(4) [23, 36, 20, 15]
+
+//1.2.1 hof map
+const arrAgeNow_hof = arrBirthday.map(function (elem) {
+    return elem = (2021 - elem);
+});
+console.log(arrAgeNow);
+//(4) [23, 36, 20, 15]
+
+// 2.
+//2.1
+const arrPeople = [
+    { name: 'Pedro Pascal', age: 45 },
+    { name: 'Leonardo Dicaprio', age: 46 },
+    { name: 'Thomas A. Anderson', age: 58 },
+    { name: 'Millie Brown', age: 17 },
+    { name: 'Harry Potter', age: 31 }
+];
+function findAdults(arr) {
+    const arrOver18 = [];
+    for (let i = 0; i < arr.length; i++) {
+        if (arr[i].age >= 18) {
+            arrOver18.push(arr[i]);
+        }
+    }
+    return arrOver18;
+}
+console.log(findAdults(arrPeople));
+/*(4) [{…}, {…}, {…}, {…}]
+0: {name: "Pedro Pascal", age: 45}
+1: {name: "Leonardo Dicaprio", age: 46}
+2: {name: "Thomas A. Anderson", age: 58}
+3: {name: "Harry Potter", age: 31} */
+
+//2.2 hof
+function findAdults_hof(arr, fn) {
+    const arrOver18 = [];
+    for (let i = 0; i < arr.length; i++) {
+        if (fn(arr[i]) === undefined) i++;
+        arrOver18.push(fn(arr[i]));
+    }
+    return arrOver18;
+}
+function more18(elem) {
+    if (elem.age >= 18) return elem.name;
+}
+console.log(findAdults_hof(arrPeople, more18));
+//(4) ["Pedro Pascal", "Leonardo Dicaprio", "Thomas A. Anderson", "Harry Potter"]
+
+//2.2.1 hof filter
+const findAdults_filter = arrPeople.filter(arrPeople => arrPeople.age >= 18);
+console.log(findAdults_filter);
+/*(4) [{…}, {…}, {…}, {…}]
+0: {name: "Pedro Pascal", age: 45}
+1: {name: "Leonardo Dicaprio", age: 46}
+2: {name: "Thomas A. Anderson", age: 58}
+3: {name: "Harry Potter", age: 31}*/
+
+
+// 3.
+//3.1
+const arrNum = [34, 38, 45, 9, 23];
+function findSumArrNumb(numb) {
+    let sum = 0;
+    for (let i = 0; i < numb.length; i++) {
+        sum += numb[i];
+    }
+    return sum;
+}
+console.log(findSumArrNumb(arrNum));//149
+
+
+//3.2.1 reduce________________________________
+const sum = arrNum.reduce(function (accumulator, currentValue) { //.reduce(function(accum, currentValue, index[0...n], array) {
+    return accumulator + currentValue;
+});
+console.log(sum);//25
+
+//   4.
+const arrPeopleName = ['Pedro', 'Leonardo', 'Anderson', 'Millie', 'Harry'];
+
+function findNameLength_hof(arr, fn) {
+    const arrlen = [];
+    for (let i = 0; i < arr.length; i++) {
+        arrlen.push(fn(arr[i]));
+    }
+    return arrlen;
+}
+function retName(item) {
+    return item.length;
+}
+const arrMap = findNameLength_hof(arrPeopleName, retName);
+console.log(arrMap);
+
+
+//  ______________Task for working with OOP:_______________
+// ES6
+class Company {
+
+    constructor(options) {
+        this.name = options.name;
+        this.vacation = options.vacation;
+    }
+    startVacation() { }
+    finishVacation() { }
+}
+// Inheritance class
+class PersonnelDep extends Company {
+
+    startVacation() {//Polymorphism shows which version of method should be run
+        this.vacation = true;
+        console.log(`I'm on vacation! :D`) //
+    }
+    finishVacation() {
+        this.vacation = false;
+        console.log(`I'm at work...`);
+    }
+
+    get getAdvice() {//encapsulation
+        let getInspirit = 'you were inspired...'
+        return console.log(getInspirit);//you were inspired...
+
+    }
+}
+
+// Inheritance class
+class Students extends PersonnelDep {
+    constructor(options) {
+        super(options);
+        this.task = options.task;
+    }
+    //Polymorphism shows which version of method should be run
+    startVacation() {//New method will clear parenth if i want to call parenth method should be used super.makeVacation()
+        this.vacation = true;
+        //super.startVacation();
+        console.log(`I'm on holiday! :D`);
+    }
+    finishVacation() {
+        this.vacation = false;
+        console.log(`holiday is done :(`);
+    }
+
+    homeworkCheck(options) {
+        let needTask = 0;
+        this.task = options;
+        console.log('Need to do ' + (needTask = 14 - options) + ' task');
+    }
+}
+const student1 = new Students({
+    name: 'Dima',
+    task: 0,
+    vacation: false
+})
+const student2 = new Students({
+    name: 'Lana',
+    task: 0,
+    vacation: false
+})
+const mentor = new PersonnelDep({
+    name: 'Dmitry',
+    vacation: false,
+})
+
+student1.startVacation();// .startVacation(false) - (holiday is done :( )
+//                          .startVacation(true) - (I'm on holiday! :D)
+student1.getAdvice();
+
+// prototypes
+
+
+
+//  ________ Functional programming task________
+
+// Higher-order functions +
+// First class functions +
+// Pure functions +
+// Function side effect +
+// Unchanging state
+// Shared State
+// Closures
+// Recursion
+// Partial function application
+//First-Class and Pure function
+const timeMinut = function (min) {
+    return min * 60;
+};
+//Higher-order Functions
+function startTimer(timeMinut) {
+    seconds = timeMinut % 60 // got second
+    minutes = timeMinut / 60 % 60 // got minute
+    hour = timeMinut / 60 / 60 % 60 // got hour
+    // if time gone...
+    if (timeMinut <= 0) {
+        clearInterval(timer);
+        alert('Time is over.');
+    } else {
+        // time output
+        let strTimer = `${Math.trunc(hour)}:${Math.trunc(minutes)}:${seconds}`;
+        console.log(strTimer);
+    }
+    --timeMinut; // decrement for timer
+}
+//timer = setInterval(, 1000);
\ No newline at end of file

From 66d8f1c16e680eabcd759d81d0f4f7411bb556ba Mon Sep 17 00:00:00 2001
From: Lana Trupkina <svtrupkina@gmail.com>
Date: Mon, 15 Mar 2021 02:54:18 +0200
Subject: [PATCH 2/6] HW5_Trupkina (pre-Done(without proto))

---
 HW5(OOP_vs_FP)/HW5_Trupkina.js | 143 ++++++++++++++++++++++++---------
 1 file changed, 106 insertions(+), 37 deletions(-)

diff --git a/HW5(OOP_vs_FP)/HW5_Trupkina.js b/HW5(OOP_vs_FP)/HW5_Trupkina.js
index b455197..a507387 100644
--- a/HW5(OOP_vs_FP)/HW5_Trupkina.js
+++ b/HW5(OOP_vs_FP)/HW5_Trupkina.js
@@ -110,6 +110,7 @@ const sum = arrNum.reduce(function (accumulator, currentValue) { //.reduce(funct
 console.log(sum);//25
 
 //   4.
+//4.1
 const arrPeopleName = ['Pedro', 'Leonardo', 'Anderson', 'Millie', 'Harry'];
 
 function findNameLength_hof(arr, fn) {
@@ -124,9 +125,14 @@ function retName(item) {
 }
 const arrMap = findNameLength_hof(arrPeopleName, retName);
 console.log(arrMap);
+//4.2
+const mapNameLength = arrPeopleName.map(function (name) {
+    return name.length;
+});
+console.log(mapNameLength);//[5, 8, 8, 6, 5]
 
 
-//  ______________Task for working with OOP:_______________
+// Task for working with OOP:
 // ES6
 class Company {
 
@@ -142,15 +148,15 @@ class PersonnelDep extends Company {
 
     startVacation() {//Polymorphism shows which version of method should be run
         this.vacation = true;
-        console.log(`I'm on vacation! :D`) //
+        console.log(`I'm ${this.name}! I'm on vacation! :D`) //
     }
     finishVacation() {
         this.vacation = false;
-        console.log(`I'm at work...`);
+        console.log(`${this.name} at work...`);
     }
 
     get getAdvice() {//encapsulation
-        let getInspirit = 'you were inspired...'
+        let getInspirit = `${this.name} were inspired...`
         return console.log(getInspirit);//you were inspired...
 
     }
@@ -166,17 +172,17 @@ class Students extends PersonnelDep {
     startVacation() {//New method will clear parenth if i want to call parenth method should be used super.makeVacation()
         this.vacation = true;
         //super.startVacation();
-        console.log(`I'm on holiday! :D`);
+        console.log(`I'm ${this.name}! I'm on holiday! :D`);
     }
     finishVacation() {
         this.vacation = false;
-        console.log(`holiday is done :(`);
+        console.log(`holiday is done :( ${this.name} at work...`);
     }
 
     homeworkCheck(options) {
         let needTask = 0;
         this.task = options;
-        console.log('Need to do ' + (needTask = 14 - options) + ' task');
+        console.log('Need to do ' + (needTask = 14 - options) + ' task for ' + this.name);
     }
 }
 const student1 = new Students({
@@ -194,43 +200,106 @@ const mentor = new PersonnelDep({
     vacation: false,
 })
 
-student1.startVacation();// .startVacation(false) - (holiday is done :( )
-//                          .startVacation(true) - (I'm on holiday! :D)
-student1.getAdvice();
+student1.startVacation();   // I'm Dima! I'm on holiday! :D
+student2.finishVacation();  //holiday is done :( Lana at work...
+student2.homeworkCheck(5);  //Need to do 9 task for Lana
+student2.getAdvice;         //Lana were inspired...
+mentor.startVacation();     //I'm Dmitry! I'm on vacation! :D
 
-// prototypes
 
+//__________ prototypes__________
+function Company2() { //abstract class (constructor)
+    this.name = null;
+    this.vacation = false;
+}
+Company2.prototype.startVacation = function () { };
+Company2.prototype.finishVacation = function () { };
 
+function PersonnelDep2(params) { //Inheritance Class 
+    Company2.call(this);
 
-//  ________ Functional programming task________
+}
+function Students2(params) { //Inheritance Class 
+    Company2.call(this);
+    this.task = params.name;
+    this.name = params.t;
+    this.vacation = params;
+}
+Students2.prototype.startVacation = function () {
+    this.vacation = true;
+    console.log(`I'm on holiday! :D`);
+}
+Students2.prototype.finishVacation = function () {
+    this.vacation = false;
+    console.log(`holiday is done :(`);
+}
+Students2.prototype.homeworkCheck = function () {
+    let needTask = 0;
+    this.task = options;
+    console.log('Need to do ' + (needTask = 14 - options) + ' task');
+}
+const student1_2 = new Students2('Dima', 0, false);
+const student2_2 = new Students2('Lana', 0, false);
+const mentor2 = new PersonnelDep2('Dmitry', false,);
+
+console.log(student1_2);//Students2 {name: "Dima", vacation: "Dima", task: "Dima"}
+//_________________________________________________
+// Functional programming task:
+// Function side effect 
+function randomNumber(min, max) {// function will be returned as a result different values
+    return Math.floor(Math.random() * (max - min) + min);
+}
+console.log(randomNumber(1, 10));
 
-// Higher-order functions +
-// First class functions +
-// Pure functions +
-// Function side effect +
-// Unchanging state
-// Shared State
-// Closures
-// Recursion
 // Partial function application
-//First-Class and Pure function
-const timeMinut = function (min) {
+const multiply = function (x, y) {
+    return x * y;
+}
+const multiply2 = multiply.bind(null, 2)// if will be passed argument 'null', the context will not bound with 'this'
+// this mean that value null(x = thisArg) & 2(y = arg1)
+console.log(multiply2(3)) // 6
+console.log(multiply2(4)) // 8
+console.log(multiply2(5)) // 10
+
+//First-Class & Pure function
+let timeMinut = function (min) {
     return min * 60;
 };
-//Higher-order Functions
-function startTimer(timeMinut) {
-    seconds = timeMinut % 60 // got second
-    minutes = timeMinut / 60 % 60 // got minute
-    hour = timeMinut / 60 / 60 % 60 // got hour
-    // if time gone...
-    if (timeMinut <= 0) {
-        clearInterval(timer);
-        alert('Time is over.');
-    } else {
-        // time output
-        let strTimer = `${Math.trunc(hour)}:${Math.trunc(minutes)}:${seconds}`;
-        console.log(strTimer);
+
+//Higher-order Functions & Shared State (use with timeMinut())
+function greeting(nameInput) {
+    alert('Hello ' + nameInput + ' you have ' + timeMinut(1) + ' seconds to finish your homework');// timeMinut exist in general scope
+}
+function userInput(callback) {
+    let nameInput = prompt('Please enter your name:');
+    callback(nameInput);
+}
+userInput(greeting); //Hello 'your namr' you have 60 seconds to finish your homework
+
+// Unchanging state 
+let line = "I am an immutable value";
+let otherline = line.slice(10, 17);// i can to create new state
+console.log(otherline); // 'mutable'
+
+//Closures
+function person() {
+    let name = 'Julia';
+
+    return function displayName() {
+        console.log(name);
+    };
+}
+let peter = person();
+peter(); // 'Julia'
+
+// Recursion
+function factorial(x) {
+    if (x < 0) throw Error("Cannot calculate factorial of a negative number");
+    function iter(i, fact) {
+        if (i === 0) return fact;
+        else return iter(i - 1, i * fact);
+
     }
-    --timeMinut; // decrement for timer
+    return iter(x, 1);
 }
-//timer = setInterval(, 1000);
\ No newline at end of file
+factorial(5); // 120
\ No newline at end of file

From 352bfde82a62004871da458ea5b0088f5c2f3924 Mon Sep 17 00:00:00 2001
From: Lana Trupkina <svtrupkina@gmail.com>
Date: Mon, 15 Mar 2021 05:15:18 +0200
Subject: [PATCH 3/6] HW#5_Trupkina

---
 HW5(OOP_vs_FP)/HW5_Trupkina.js | 48 ++++++++++++++++++++++++----------
 1 file changed, 34 insertions(+), 14 deletions(-)

diff --git a/HW5(OOP_vs_FP)/HW5_Trupkina.js b/HW5(OOP_vs_FP)/HW5_Trupkina.js
index a507387..d0aba23 100644
--- a/HW5(OOP_vs_FP)/HW5_Trupkina.js
+++ b/HW5(OOP_vs_FP)/HW5_Trupkina.js
@@ -207,7 +207,7 @@ student2.getAdvice;         //Lana were inspired...
 mentor.startVacation();     //I'm Dmitry! I'm on vacation! :D
 
 
-//__________ prototypes__________
+//_____________________ prototypes______________________
 function Company2() { //abstract class (constructor)
     this.name = null;
     this.vacation = false;
@@ -215,34 +215,54 @@ function Company2() { //abstract class (constructor)
 Company2.prototype.startVacation = function () { };
 Company2.prototype.finishVacation = function () { };
 
-function PersonnelDep2(params) { //Inheritance Class 
+function PersonnelDep2(name, vacation) { //Inheritance Class from Company2
     Company2.call(this);
-
+    this.name = name;
+    this.vacation = vacation;
 }
-function Students2(params) { //Inheritance Class 
-    Company2.call(this);
-    this.task = params.name;
-    this.name = params.t;
-    this.vacation = params;
+PersonnelDep2.prototype.startVacation = function () {//Polymorphism
+    this.vacation = true;
+    console.log(`I'm ${this.name}! I'm on vacation! :D`)
+}
+PersonnelDep2.prototype.finishVacation = function () {
+    this.vacation = false;
+    console.log(`${this.name} at work...`);
 }
-Students2.prototype.startVacation = function () {
+PersonnelDep2.prototype.getAdvice = function () {//encapsulation(not work)
+    let getInspirit = `${this.name} were inspired...`
+    return console.log(getInspirit);
+}
+function Students2(name, task, vacation) { //Inheritance Class from PersonnelDep2
+    PersonnelDep2.call(this, task);
+
+    this.name = name;
+    this.task = task;
+    this.vacation = vacation;
+}
+Students2.prototype.startVacation = function () {//Polymorphism
     this.vacation = true;
-    console.log(`I'm on holiday! :D`);
+    console.log(`I'm ${this.name}! I'm on holiday! :D`);
 }
 Students2.prototype.finishVacation = function () {
     this.vacation = false;
-    console.log(`holiday is done :(`);
+    console.log(`holiday is done :( ${this.name} at work...`);
 }
-Students2.prototype.homeworkCheck = function () {
+Students2.prototype.homeworkCheck = function (options) {
     let needTask = 0;
     this.task = options;
-    console.log('Need to do ' + (needTask = 14 - options) + ' task');
+    console.log('Need to do ' + (needTask = 14 - options) + ' task for ' + this.name);
 }
 const student1_2 = new Students2('Dima', 0, false);
 const student2_2 = new Students2('Lana', 0, false);
 const mentor2 = new PersonnelDep2('Dmitry', false,);
+//___________
+
+student1_2.startVacation();   // I'm Dima! I'm on holiday! :D
+student2_2.finishVacation();  //holiday is done :( Lana at work...
+student2_2.homeworkCheck(5);  //Need to do 9 task for Lana
+student2_2.getAdvice;         //Lana were inspired... (not work)
+mentor2.startVacation();     //I'm Dmitry! I'm on vacation! :D
 
-console.log(student1_2);//Students2 {name: "Dima", vacation: "Dima", task: "Dima"}
 //_________________________________________________
 // Functional programming task:
 // Function side effect 

From 936474b8a924b334cce15354b7036cb1467acf1e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D0=B2=D0=B5=D1=82=D0=BB=D0=B0=D0=BD=D0=B0=20=D0=A2?=
 =?UTF-8?q?=D1=80=D1=83=D0=BF=D0=BA=D0=B8=D0=BD=D0=B0?=
 <s7168347s@gmail.com>
Date: Mon, 15 Mar 2021 05:19:13 +0200
Subject: [PATCH 4/6] Update HW5_Trupkina.js

---
 HW5(OOP_vs_FP)/HW5_Trupkina.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/HW5(OOP_vs_FP)/HW5_Trupkina.js b/HW5(OOP_vs_FP)/HW5_Trupkina.js
index d0aba23..49400c5 100644
--- a/HW5(OOP_vs_FP)/HW5_Trupkina.js
+++ b/HW5(OOP_vs_FP)/HW5_Trupkina.js
@@ -255,7 +255,6 @@ Students2.prototype.homeworkCheck = function (options) {
 const student1_2 = new Students2('Dima', 0, false);
 const student2_2 = new Students2('Lana', 0, false);
 const mentor2 = new PersonnelDep2('Dmitry', false,);
-//___________
 
 student1_2.startVacation();   // I'm Dima! I'm on holiday! :D
 student2_2.finishVacation();  //holiday is done :( Lana at work...
@@ -322,4 +321,4 @@ function factorial(x) {
     }
     return iter(x, 1);
 }
-factorial(5); // 120
\ No newline at end of file
+factorial(5); // 120

From 24f739d2a63954ad67aea19f6b2826bda637037c Mon Sep 17 00:00:00 2001
From: Lana Trupkina <svtrupkina@gmail.com>
Date: Thu, 18 Mar 2021 14:21:02 +0200
Subject: [PATCH 5/6] Additional task *

---
 HW5(OOP_vs_FP)/HW5_Trupkina.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/HW5(OOP_vs_FP)/HW5_Trupkina.js b/HW5(OOP_vs_FP)/HW5_Trupkina.js
index 49400c5..b078179 100644
--- a/HW5(OOP_vs_FP)/HW5_Trupkina.js
+++ b/HW5(OOP_vs_FP)/HW5_Trupkina.js
@@ -211,6 +211,10 @@ mentor.startVacation();     //I'm Dmitry! I'm on vacation! :D
 function Company2() { //abstract class (constructor)
     this.name = null;
     this.vacation = false;
+    // Additional task* 
+    if (this.constructor === Company2) {//we must not allow creation of instance of abstract class 
+        throw new Error("You cannot create an instance of Abstract Class");
+    };
 }
 Company2.prototype.startVacation = function () { };
 Company2.prototype.finishVacation = function () { };
@@ -261,6 +265,8 @@ student2_2.finishVacation();  //holiday is done :( Lana at work...
 student2_2.homeworkCheck(5);  //Need to do 9 task for Lana
 student2_2.getAdvice;         //Lana were inspired... (not work)
 mentor2.startVacation();     //I'm Dmitry! I'm on vacation! :D
+let director = new Company2(); // if you try to create instance of abstract class we get:
+// Uncaught Error: You cannot create an instance of Abstract Class
 
 //_________________________________________________
 // Functional programming task:

From 8df55d7d1ffeab574342117f04cbd25be1ef85c6 Mon Sep 17 00:00:00 2001
From: Lana Trupkina <svtrupkina@gmail.com>
Date: Thu, 18 Mar 2021 15:24:08 +0200
Subject: [PATCH 6/6] Additional task*

---
 HW5(OOP_vs_FP)/HW5_Trupkina.js | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/HW5(OOP_vs_FP)/HW5_Trupkina.js b/HW5(OOP_vs_FP)/HW5_Trupkina.js
index b078179..0e123ac 100644
--- a/HW5(OOP_vs_FP)/HW5_Trupkina.js
+++ b/HW5(OOP_vs_FP)/HW5_Trupkina.js
@@ -232,10 +232,7 @@ PersonnelDep2.prototype.finishVacation = function () {
     this.vacation = false;
     console.log(`${this.name} at work...`);
 }
-PersonnelDep2.prototype.getAdvice = function () {//encapsulation(not work)
-    let getInspirit = `${this.name} were inspired...`
-    return console.log(getInspirit);
-}
+
 function Students2(name, task, vacation) { //Inheritance Class from PersonnelDep2
     PersonnelDep2.call(this, task);
 
@@ -263,7 +260,6 @@ const mentor2 = new PersonnelDep2('Dmitry', false,);
 student1_2.startVacation();   // I'm Dima! I'm on holiday! :D
 student2_2.finishVacation();  //holiday is done :( Lana at work...
 student2_2.homeworkCheck(5);  //Need to do 9 task for Lana
-student2_2.getAdvice;         //Lana were inspired... (not work)
 mentor2.startVacation();     //I'm Dmitry! I'm on vacation! :D
 let director = new Company2(); // if you try to create instance of abstract class we get:
 // Uncaught Error: You cannot create an instance of Abstract Class