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Random interesting stuff on AI agents, MCP, ecommerce, and other experiments.

Validate your international phone numbers in Rails

PhonyRails is a Ruby on Rails gem that helps developers normalize and validate phone numbers in their applications. It extends the Phony gem to automatically format phone numbers to international standards and validate them based on the country code. »

GTIN/EAN Generator Code

In this blog post, we demonstrate how to generate and validate EAN-13 barcodes using JavaScript. EAN-13, a 13-digit barcode standard, is crucial for tracking products in retail and inventory systems globally. Each EAN-13 barcode includes a GS1 country »

So you upgraded postgres

So.. you upgraded Postgres (by accident) and are now getting a FATAL: database files are incompatible with server and The data directory was initialized by PostgreSQL version X, which is not compatible with this version Y.Z.. This post shows the quick fix. »