dylansalim3

class CustomAppBar extends PreferredSize {
  final Widget child;
  final double height;

  CustomAppBar({@required this.child, this.height = kToolbarHeight});

  @override
  Size get preferredSize => Size.fromHeight(height);

  @override

dylansalim3

const List<String> SECURITY_QUESTIONS = [
  "What city were you born in?",
  "What is your favorite food?",
  "Where did you go to high school?",
  "What was the first company that you worked for?",
  "What was the name of your first pet?",
  "What is the name of the road you grew up on?",
  "What is your mother’s maiden name?",
  "What Is your favorite book?",
  "Where is your favorite place to vacation?",

dylansalim3

// Sample 1
db.sequelize.transaction(t => {
                        var promises = [];
                        for (let i = 0; i < usersData.length; i++) {
                            promises[i] = UserRepository.createUser(usersData[i], {transaction: t});
                        }
                        return Promise.all(promises).then(users => {
                            var userRolePromises = [];
                            for (var i = 0; i < users.length; i++) {
                                userRolePromises.push(UserRole.create({

dylansalim3

 const t = await db.sequelize.transaction();
                        const promises = [];
                        for (let i = 0; i < usersData.length; i++) {
                            promises[i] = UserRepository.createUser(usersData[i], {transaction: t});
                        }
                        Promise.all(promises).then(users => {
                            const userRolePromises = [];
                            for (let i = 0; i < users.length; i++) {
                                userRolePromises.push(RoleRepository.findRoleById(rows[users[i].email]).then(role => {
                                    users[i].addRole(role);

dylansalim3

//One to One
bookDetail.hasOne(category);
category.belongsTo(bookDetail);

//One to Many
borrowBook.belongsTo(user,{foreignKey: 'user_id',});
user.hasMany(borrowBook,{foreignKey: 'user_id',});

//Many to Many
bookDetail.belongsToMany(author,{through: "book_author",foreignKey:'book_detail_id'});

dylansalim3

sudo fuser -n tcp -k {port_number}

dylansalim3

// in cmd
netstat -aon | find "PORT_NUM"

// In bash:
netstat -na | grep "8080"

// In PowerShell:
netstat -na | Select-String "8080"

Sample Output:

dylansalim3

//check dev id
sudo fdisk -l 

sample output:
Disk /dev/sdc: 14.3 GiB, 15376000000 bytes, 30031250 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

//Unmount the usb

dylansalim3

// Build docker file with a given tag
docker build -t {tag-name} {docker-location}
example -> docker build -t node-app-test .

//run docker in interactive mode
docker run -it -p {exposed-machine-port}:{application-port} {tag-name}
example -> docker build -t 9000:3000 node-app-text

// run container in the background/detach mode
docker run -d -p {exposed-machine-port}:{application-port} {tag-name}

dylansalim3

Web Worker in Angular

Example 1: Fibonacci Function in Angular

Create a web worker
ng generate web-worker webWorker

and move the fibonacci function into the file:

// webWorker-demo/src/app/webWorker.ts
function fibonacci(num) {
    if (num == 1 || num == 2) {