How do railway signals work? (alpharail.co.nz) | HN Screenshots

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Screenshot of alpharail.co.nz: How do railway signals work?

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Screenshot of alpharail.co.nz: Why do railway tracks have crushed stones alongside them?

Why do railway tracks have crushed stones alongside them?(alpharail.co.nz)

654 points by Twixes 3 years ago | 269 comments

AlphaRail blog post explaining why railway tracks are laid on crushed stone ballast.

railways track-ballast civil-engineering infrastructure

Screenshot of blog.appsignal.com: What's New in Ruby on Rails 8

What's New in Ruby on Rails 8 (blog.appsignal.com)

440 points by amalinovic 2 years ago | 204 comments

An AppSignal blog post by Damilola Olatunji from October 2024 outlining the new features in Ruby on Rails 8.

ruby-on-rails rails-8 ruby appsignal

Screenshot of blog.appsignal.com: Setting up server monitoring for a Rails app on Hatchbox

Setting up server monitoring for a Rails app on Hatchbox (blog.appsignal.com)

12 points by andreigaspar 5 months ago | 2 comments

Screenshot of blog.appsignal.com: A Deep Dive into RSpec Tests in Ruby on Rails

A Deep Dive into RSpec Tests in Ruby on Rails (blog.appsignal.com)

26 points by amalinovic 2 years ago | 1 comments

Screenshot of blog.appsignal.com: An Introduction to LiteStack for Ruby on Rails

An Introduction to LiteStack for Ruby on Rails (blog.appsignal.com)

77 points by unripe_syntax 3 years ago | 26 comments

Screenshot of picolisp-explored.com: A railroad simulation using discrete event simulation

A railroad simulation using discrete event simulation (picolisp-explored.com)

159 points by todsacerdoti 2 years ago | 67 comments