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Showing 1 to 10 of 48 posts.

6 JavaScript Quirks that every JS developer should know!

Posted on July 4th, 2020 in JavaScript by George

Most of the developers from other languages are ofter too confident to adopt JavaScript just because they master other languages syntax. 

But what do you do when your application misbehaves and at first glance, everything looks right? Could be that you were not aware of some of the JavaScript quirks?

Without further ado, let's dive in.

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SQL horizontal vs vertical data query with CASE WHEN

Posted on June 27th, 2020 in MySQL, NodeJS by George

SQL query examples for vertical and horizontal orientated data.

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MySQL SubQuery - Correlated SubQuery

Posted on May 25th, 2020 in MySQL by George

While I am learning MySQL I cam across subqueries and thought this matter deserves an article. Enjoy.

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MySQL Public Key Retrieval is not allowed - How to fix DBeaver MySQL connection error

Posted on May 24th, 2020 in PhP, Miscellaneous by George

Step by step tutorial to fix this issue. 

MySql Public Key Retrieval is not allowed

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React native error "multiple commands produce.." Xcode 11

Posted on May 14th, 2020 in JavaScript, React Native by George

How to solve this issue? See the article

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How To Test React Components (hooks, Jest, Enzyme)

Posted on May 4th, 2020 in JavaScript by George

This article explains unit testing, integration testing, the end to end testing, and how to create React Component tests. 

The examples will use Jest and Enzyme for testing and the test components will be written using React hooks.

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Swift Array Map method with a trailing closure

Posted on April 27th, 2020 in Swift by George

Example of how to use map function with a trailing closure over an array value.

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What are JavaScript generators, function* generator?

Posted on April 27th, 2020 in JavaScript by George

Find out what a function generator looks like and what it is, with examples.

➜  jsstuff node generators.js
First Next Promise { <pending> }
{ name: 'George', age: 30, activityList: [ 'Coding', 'Running' ] }
Second Next { value: 1, done: false }
Third Next { value: '2', done: false }
Fourth Next { value: 'I am done here!', done: false }
Fifth Next { value: undefined, done: true }

 

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JavaScript Factory Design Pattern (using ES6 class)

Posted on April 16th, 2020 in JavaScript, NodeJS by George

A quick example of how to implement the factory pattern in Javascript using ES6 classes.

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JavaScript Singleton (using ES6 class)

Posted on April 16th, 2020 in JavaScript by George

An example of how to implement the Singleton pattern in JavaScript using ES6 class abstraction.

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