Update week-3 from in-class examples

Author: dashersw

.vscode/launch.json

@@ -4,6 +4,12 @@
   // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
   "version": "0.2.0",
   "configurations": [
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Launch Program",
+      "program": "${file}"
+    },
     {
       "type": "node",
       "request": "launch",

week-3-1/files/1.txt week-3-async-file-read/files/1.txt

@@ -1,19 +1,19 @@
-const fs = require('fs');
+const fs = require('fs')
 
 /*
 
 First version, synchronous
 
 */
 
-const file1 = fs.readFileSync(__dirname + '/files/1.txt', 'utf8');
-console.log(file1);
+const file1 = fs.readFileSync(__dirname + '/files/1.txt', 'utf8')
+console.log(file1)
 
-const file2 = fs.readFileSync(__dirname + '/files/2.txt', 'utf8');
-console.log(file2);
+const file2 = fs.readFileSync(__dirname + '/files/2.txt', 'utf8')
+console.log(file2)
 
-const file3 = fs.readFileSync(__dirname + '/files/3.txt', 'utf8');
-console.log(file3);
+const file3 = fs.readFileSync(__dirname + '/files/3.txt', 'utf8')
+console.log(file3)
 
 /*
 
@@ -27,9 +27,9 @@ fs.readFile(__dirname + '/files/1.txt', 'utf8', (err, contents1) => {
         console.log(contents2)
         fs.readFile(__dirname + '/files/3.txt', 'utf8', (err, contents3) => {
             console.log(contents3)
-        });
-    });
-});
+        })
+    })
+})
 
 
 /*
@@ -41,19 +41,20 @@ Third version, promises
 let readFile = (filename) => {
     return new Promise((resolve, reject) => {
         fs.readFile(filename, 'utf8', (err, contents) => {
-            if (err) return reject(err);
+            if (err) return reject(err)
 
-            resolve(contents);
-        });
-    });
+            resolve(contents)
+        })
+    })
 }
 
 readFile(__dirname + '/files/1.txt')
     .then(console.log)
     .then(() => readFile(__dirname + '/files/2.txt'))
     .then(console.log)
     .then(() => readFile(__dirname + '/files/3.txt'))
-    .then(console.log);
+    .then(console.log)
+    .catch(err => console.log(err))
 
 /*
 
@@ -72,4 +73,10 @@ const main = async () => {
     console.log(contents3)
 }
 
-main()
+(async () => {
+    try {
+        await main()
+    } catch (e) {
+        console.log(e)
+    }
+})()

week-3-1/files/2.txt week-3-async-file-read/files/2.txt

@@ -1,5 +1,5 @@
 {
-  "name": "week-3-1",
+  "name": "week-3-async-file-read",
   "version": "1.0.0",
   "description": "",
   "main": "index.js",

week-3-1/files/3.txt week-3-async-file-read/files/3.txt

@@ -0,0 +1 @@
+{"name":"Women Tech Makers Berlin","location":"Eurostaff","attendees":[{"name":"Armagan","age":34},{"name":"Mert","age":33}]}

week-3-1/index.js week-3-async-file-read/index.js

@@ -0,0 +1,10 @@
+const fs = require('fs')
+module.exports = {
+    save(data) {
+        // console.log(data)
+        fs.writeFileSync('data.json', JSON.stringify(data))
+    },
+    load() {
+        return JSON.parse(fs.readFileSync('data.json'))
+    }
+}

week-3-1/package-lock.json week-3-async-file-read/package-lock.json

@@ -0,0 +1,18 @@
+const Person = require('./person')
+const Meetup = require('./meetup')
+const Database = require('./database')
+
+console.log('Hello World!')
+
+const mert = new Person('Mert', 33)
+const armagan = new Person('Armagan', 34)
+// console.log(mert, armagan)
+
+const wtmb = new Meetup('Women Tech Makers Berlin', 'Eurostaff')
+armagan.attend(wtmb)
+mert.attend(wtmb)
+wtmb.report()
+
+Database.save(wtmb)
+const loadedFile = Database.load()
+console.log(loadedFile.attendees[0].name)

week-3-1/package.json week-3-async-file-read/package.json

@@ -0,0 +1,22 @@
+const Chalk = require('chalk')
+const Person = require('./person')
+
+module.exports = class Meetup {
+    constructor(name, location) {
+        this.name = name
+        this.location = location
+        this.attendees = []
+    }
+
+    report() {
+        console.log(Chalk.blue.bgRed.bold(this.name), 'meetup is held at', Chalk.green(this.location), 'and number of attendees are', this.attendees.length)
+    }
+
+    static create({ name, location, attendees }) {
+        const meetup = new Meetup(name, location)
+
+        meetup.attendees = attendees.map(Person.create)
+
+        return meetup
+    }
+}

week-3-map-objects/data.json

@@ -0,0 +1,14 @@
+{
+  "name": "week-3-map-objects",
+  "version": "1.0.0",
+  "description": "WTM Berlin JS Crash Course 2018 Lecture 2 - Node.js",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Mert Cetin <[email protected]>",
+  "license": "MIT",
+  "dependencies": {
+    "chalk": "^2.4.1"
+  }
+}

week-3-map-objects/database.js

@@ -0,0 +1,14 @@
+module.exports = class Person {
+    constructor(name, age) {
+        this.name = name
+        this.age = age
+    }
+
+    attend(meetup) {
+        meetup.attendees.push(this)
+    }
+
+    static create({ name, age }) {
+        return new Person(name, age)
+    }
+}

week-3-map-objects/index.js

@@ -1,5 +1,5 @@
 {
-  "name": "week-3-2",
+  "name": "week-3-models-and-services-2",
   "version": "1.0.0",
   "description": "WTM Berlin JS Crash Course 2018 Lecture 3 - async programming",
   "main": "index.js",

week-3-map-objects/meetup.js

@@ -0,0 +1,23 @@
+console.log('1')
+
+setTimeout(() => {
+  console.log('2')
+  console.log('5')
+}, 10000)
+
+console.log('3')
+console.log('4')
+console.log('6')
+
+setTimeout(() => {
+  console.log('7')
+}, 7000)
+
+setTimeout(() => {
+  console.log('0')
+}, 3000)
+
+
+process.on('SIGINT', () => {
+  console.log('i need to exit gracefully!')
+})