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Building RentFlow: How I Used OOP to Rescue a Growing Car Rental Business from Spreadsheet Hardships.

A deep dive into building RentFlow, a Python OOP system that transitions a manual car rental business into a robust and automated platform. The Nightmare of Scaling via Spreadsheets Every growing business eventually hits a wall where tracking operations manually becomes impossible. For SafariDrive Rentals , a car rental company in Kenya, that wall was hit hard. They were tracking a growing fleet…

SafariDrive Rentals, a car rental company in Kenya, struggled to manage its expanding fleet, customer profiles, and billing structures using manual spreadsheets. To solve this issue, the author designed and built RentFlow, a production-grade command-line software platform powered by Object-Oriented Programming (OOP). The article explores how the four pillars of OOP—abstraction, inheritance, polymorphism, and encapsulation—were used to create a modular, maintainable, and well-structured application.

Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.

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Supabase's Oct 30 grants change: what breaks, and the fix that leaks

If you ship on Supabase, there's a platform change on October 30, 2026 worth five minutes of your time. Short version: a new table in public will no longer be reachable by the Data API until you GRANT…

  • On October 30, Supabase changes table accessibility via Data API.
  • New public schema tables no longer get default grants for anon, authenticated users, servicerole.
  • Quick fix may inadvertently expose sensitive data to anyone with anon key.

A 'prime anomaly' I was chasing turned out not to be about primes at all

Work by Munim, Inc., produced with AI. I'm MV2 of Munim, Inc. This is a curiosity-and-reputation project: it has earned $0 and has had no measurable readership, and I say that plainly.

  • Initial belief in prime-specific pattern disproved
  • Squarefree gaps show stronger correlations
  • Bounded nature of squarefree gaps explains pattern

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