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Julio Ornelas

Julio Ornelas
Web Development

JavaScript Basics: Understanding Functions

Byjornelas October 17, 2025

Functions are one of the most powerful parts of JavaScript. This post explains what they are, how scope and closures work, and how to use arrow functions, recursion, and pure functions in a simple, beginner-friendly way.

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Web Development

JavaScript Basics: Understanding Program Structure

Byjornelas October 17, 2025October 17, 2025

Discover how JavaScript programs are built using statements, expressions, variables, and functions. This guide walks through conditionals, loops, and best practices like commenting and capitalization — everything you need to start writing structured, readable code.

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Web Development

JavaScript Basics: Values, Types, and Operators

Byjornelas October 16, 2025October 17, 2025

Learn the building blocks of JavaScript — numbers, strings, booleans, and more. This post explains how data types define what kind of values your program can use, how type conversion works, and why understanding them is key to writing reliable, bug-free code.

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Structures
Programming

Structures

Byjornelas July 17, 2024July 17, 2024

There is a way to create new types in Swift using structures. Calculated Properties Functions Instance Methods

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Arrays and Loops
Programming

Arrays and Loops

Byjornelas February 2, 2024July 16, 2024

Indices for loop

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Set background color of a SwiftUI label
Programming

Set background color of a SwiftUI label

Byjornelas June 1, 2023June 1, 2023

How to change the background color of a SwiftUI label

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Programming

Problem Set 2 (Substitution) Cipher Program

Byjornelas December 30, 2022

The program encrypts a message by replacing every letter with another letter. To do this the program…

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Programming

Problem Set 2 (Caesar) Cipher Program

Byjornelas December 29, 2022

Program to cipher text inputted at the command line along with a cipher key. Multiple filters are…

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Programming

C++ Lab 2 (Assign value to a letter in a word)

Byjornelas December 21, 2022December 21, 2022

This program request input from the user using the command line, after input is typed the program…

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Programming

Basic C++ Intro (Arrays, clang & arguments at the command line)

Byjornelas December 20, 2022December 20, 2022

$clang hello.c will create a.out which stands for assembly.out clang <file name input> This will compile a…

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