Hacker News on 30 June 2019

• The German Tank Problem
• Grubhub is using fake websites to drive up commission fees from real businesses
• SwiftWebUI
• The Cost of JavaScript in 2019
• Show HN: Web pages stored entirely in the URL
• Go Slices Are Fat Pointers
• Lazydocker: a terminal GUI for Docker
• Tell HN: Social media strike proposed for July 4-5 by Wikipedia co-founder
• New Raspberry Pi 4 Firmware Lowers Temperature by 3-5°C
• NYC Mesh Begins Broadband Expansion in Brooklyn