• 2026-04-11
Interface Segregation Principle In IOS: How To Prevent A Protocol From Becoming A Prison

It's Monday morning. You're halfway through your coffee when a Slack message pops up from the Platform team: Hey, we noticed UserService.fetchLoyaltyPoints() is throwing an error for 12% of users. Can you take a look? You open UserService.swift, and your heart sinks. Eleven dependencies. Twenty-five methods. Eight hundred forty-seven lines…