did you know some emojis are just sums of other emojis?
25/01/2026
❤️ + 🔥 = ❤️🔥. it looks like magic, but it's computer science. in this post, i explain how emoji sums work and what the famous ZWJ is.
hello world, my name is
francisco, fcoterroba on the internet
software engineer, writer and product builder
i love programming, writing and
understanding the product behind the code
tech stack
tools and technologies i use to create amazing products
php
laravel
symfony
python
fastapi
django
flask
web scraping
playwright
beautifulsoup
vue.js
html
css
javascript
react
astro
swift
react native
java
mysql
nosql
firebase
notion
mcp
ia
copywriting
discord
php
laravel
symfony
python
fastapi
django
flask
web scraping
playwright
beautifulsoup
vue.js
html
css
javascript
react
astro
swift
react native
java
mysql
nosql
firebase
notion
mcp
ia
copywriting
discord
more than a programmer
i'm not the typical developer who codes in silence. i'm the one who understands your business, communicates with you at every step and builds solutions that actually work. beyond code, i write about the future of artificial intelligence.
my blog
thoughts on technology, development and the future of programming
¿sabías que hay emojis que son sumas de otros emojis?
25/01/2026
❤️ + 🔥 = ❤️🔥. parece magia, pero es informática. en este post te explico cómo funcionan las sumas de emojis y qué es el famoso ZWJ.
what is the 404 error and why is it called that?
19/01/2026
4-0-4. the error you've probably seen the most while browsing the web. but do you know what it actually means? in this post, i explain everything about HTTP codes and my new 404.
¿qué es el error 404 y por qué se llama así?
19/01/2026
4-0-4. el error que más veces habrás visto si navegas por internet. pero, ¿sabes qué significa realmente? en este post te explico todo sobre los códigos HTTP y mi nuevo 404.
how unicode saved 'ñ' — the near disappearance in the 80s and 90s
16/11/2025
in the era of 7-bit ascii and incompatible code pages, the letter 'ñ' risked disappearing from digital text. this post tells what happened and how unicode and utf-8 brought it back.
cómo Unicode salvó a la 'ñ' — la casi desaparición en los 80 y 90
16/11/2025
en la era del ASCII de 7 bits y páginas de códigos incompatibles, la letra 'ñ' corrió el riesgo de desaparecer del texto digital. este post cuenta qué pasó y cómo unicode y utf-8 la devolvieron.
acknowledgments
behind every line of code there's a network of people who have inspired, taught and supported me. to my mentors, colleagues, clients and all those who believed in my ideas when i myself doubted. this success is also yours.
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if you have any questions, suggestions or simply want to chat about technology, don't hesitate to contact me.
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