Alexander Obregon – Medium

Alexander Obregon

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About Me

Hello, I’m Alexander Obregon, a 29-year-old who’s passionate about code and software development. I’m living in the U.S. now, but a lot of…

Dec 22, 2023

About Me

Dec 22, 2023

Why TypeScript Type Compatibility Isn’t Always Obvious

Some of the most confusing bugs in TypeScript don’t come from bad logic but from how types silently accept or reject assignments that seem…

11h ago

Why TypeScript Type Compatibility Isn’t Always Obvious

11h ago

How to Make a Countdown in Java from Any Number

Counting down from any number is one of those things that shows how much thought goes into even the smallest parts of a program. A loop…

11h ago

How to Make a Countdown in Java from Any Number

11h ago

Email Verification Flows with Spring Boot and Expiring Tokens

Email verification is one of the most common features in user registration systems, especially when securing personal accounts or services…

11h ago

Email Verification Flows with Spring Boot and Expiring Tokens

11h ago

How to Use Template Literal Types in TypeScript Projects

Template literal types let TypeScript treat certain strings as patterns instead of just raw text. You’re probably used to writing strings…

1d ago

How to Use Template Literal Types in TypeScript Projects

1d ago

Printing Even Numbers with Java Using Loops

Looping over a range of numbers and filtering for even values is one of the simplest but most effective tasks for learning control flow in…

1d ago

Printing Even Numbers with Java Using Loops

1d ago

Data Pagination in Spring Boot Without Exposing Page Numbers

Real-time APIs and modern frontends don’t gain much from showing page numbers in their requests. What actually helps is letting users…

1d ago

Data Pagination in Spring Boot Without Exposing Page Numbers

1d ago

Why TypeScript Sometimes Inlines Types and Sometimes Doesn’t

Most people who spend time writing TypeScript have run into this. You hover over something in the editor, and sometimes it shows the whole…

2d ago

Why TypeScript Sometimes Inlines Types and Sometimes Doesn’t

2d ago

Using Java to Count Vowels in a Word

Working with strings in Java helps show how characters, loops, and basic checks come together in code that actually runs. One example that…

2d ago

Using Java to Count Vowels in a Word

2d ago

PDF Form Filling with Spring Boot and iText Templates

Creating and returning filled PDF forms through a Spring Boot API helps move paperwork online in a way that feels predictable and…

2d ago

PDF Form Filling with Spring Boot and iText Templates

2d ago

Alexander Obregon

Alexander Obregon

I post daily about programming topics and share what I learn as I go. For recaps, exclusive content, and to support me: https://alexanderobregon.substack.com

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