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It is software testing process that determines whether
the deployed software build is stable or not.

Smooke testing is a confirmation for QA team to proceed with
further software testing.

It is also known as Build Verification Testing or Confidence Testing.

We are checking if code is not on fire :D

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Continous Delivery (CD) is the process to build, test, configure
and deploy from a build to a production environment.

Multiple testing or staging environments create a Release Pipeline
to automate the creation of infrastructure and deployment of a new build.

Anytime there is a new build artifact available,
it is automatically placed in the desired environment
and deployed.

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/*
    REST (Representational State Transfer)
.
    It is an architectural style of distributed system.

    It is based upon the set of principles that describes 
    how network resources are defined and addressed.

    There are 39 total HTTP verbs.

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PRODUCT VISION
PRODUCT BACKLOG
SPRINT BACKLOG
RELEASE PLAN
SPRINT BURNDOWN CHART
IMPEDIMENT LIST

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/*
    Observables are a representation of any set of values
    over any amount of time.
*/

import {map, tap} from '@rxjs/operators'

getOldBookById(id: number): Observable<OldBook>{
	return this.http.get<Book>(`/api/books/${id}`)
	.pipe(

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echo "LETS GO!!"

echo is actually an alias for Write-Host in powershell.

Write-Output - success Output
Write-Host - writing to console
Write-Debug - for debugging

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/*
    ==
    It converts the variable values to the same type 
    before performing comparsion (TYPE COERCION).
    It means that if two values are not the same type,
    == will convert them to the same type and return true.

    ===
    It doesn't convert the variable values to the same type 
    before performing comparsion (TYPE COERCION).

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/*
    DROP
    It will delete all data and the table structure as well.
    Those are auto-commited statements, no rolling back!

    DELETE
    It will delete the data but table structure will remain the same
    and we can still rollback the data.
    It also allows us to use WHERE to only delete some data.
*/

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/*
    Block-Element-Modifier (BEM) is a popular naming convention created to help developers understand
    the relationship between the HTML and CSS in a given project.

    BLOCK is a top-level abstraction of a new component.
    We can think of it as parent.

    ELEMENTS can be placed inside BLOCKS and are denoted by two underscores (__).
    We can think of them as children.

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// FASTER THAN INTERFACES, BECAUSE EVERYTHING IS IN ONE PLACE!
public abstract class AbstractWorker
{
    // CONST, FIELDS, PROPERTIES ALLOWED!
    const int salaryMultiplier = 1;
    protected int Salary { get; set; }

    private IWorker _worker;

    public constructor(IWorker worker, int baseSalary)