ArchTaqi

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ArchTaqi

Implementing a Factory Pattern for Vacation Management in PHP

We are building a vacation management system where different types of vacations (Paid Vacation, Sick Leave, and Work From Home) need to be created dynamically based on user input.

Demo Code (Starter):

Below is an incomplete PHP code snippet. Your task is to complete the VacationFactory class so that it properly creates instances of different vacation types using the Factory Pattern.

Use any online compiler to write code;

ArchTaqi

<?php

// Usage example:
$calculator = new Calculator();
$result = $calculator->setValue(5)->add(3)->multiply(2)->getResult();

?>

ArchTaqi

<?php

function showDeveloperList(array $developers): void
{
    foreach ($developers as $developer) {
        $expectedSalary = $developer->calculateExpectedSalary();
        $experience = $developer->getExperience();
        $githubLink = $developer->getGithubLink();
        $data = [$expectedSalary, $experience, $githubLink];

ArchTaqi

Building your own crypto-currency using Solana

1. Set up a wallet
2. Mint (create) your own token
3. Make your own NFT

1 - Setting Up a Solana Wallet (keypair)

ArchTaqi

If an Algorithm contains 3 loops inside, with time complexities O(n), O(n2) and O(n). What will be the the total time complexity?

for (int i = 1; i <= n; i++)  {
// code   
}    

for (int i = 1; i <= n; i++) {        
 for (int j = 1; j &lt;= n; j++) { 

ArchTaqi

A guide on how to build Python Packages for AWS Lambda Layers using Docker containers.

Limitations of Lambda Layers

There are a few limitations that you need to be aware of and this includes:

• You can only use up to 5 layers per Lambda.
• The size of all your layers unzipped cannot exceed 250mb.
• Layers are mounted to the /opt directory in the function’s execution environment so be sure to Layer your functions properly if you are going to have more than one.

ArchTaqi

for region in `aws ec2 describe-regions --query 'Regions[].RegionName' --output text`; do
    aws sns list-subscriptions --query "Subscriptions[?starts_with(Endpoint, 'arn:aws:sqs:')].[TopicArn, Endpoint]" --output text --region $region
done

ArchTaqi

#!/bin/bash
#
# A script to create a daily mysqldump for crashplan

# Defaults
# Override them in /etc/default/mysqlbackupforcrashplan
OUTPUTFILE=/var/local/full-backup.sql
STATEFILE=/var/local/full-backup.sql.state
CRONFILE=/etc/cron.d/mysqlbackupforcrashplan
MYSQLDUMPBIN=/usr/bin/mysqldump

ArchTaqi

for bucket in `cat list-of-s3-buckets.txt`; do 
  aws s3api put-bucket-lifecycle \
    --bucket $bucket \
    --lifecycle-configuration '{"Rules":[{"ID":"cleanup","Status":"Enabled","Prefix":"","Expiration":{"Days":1}}]}'; 
done