Combine items from multiple feeds

Gemfile

gem "byebug", "~> 11.1", :groups => [:development, :test]

gem "rss", "~> 0.2.9"

rss-combine.rb

#!/usr/bin/env ruby
require "rss"
require "byebug"
require "open-uri"

all = []
urls = [
  "https://www.ruby-lang.org/en/feeds/news.rss",
  "https://amasan.co.uk/feed-digest/feed/",
].each do |url|
  URI.open(url) do |rss|
    feed = nil
    # parse even invalid feeds, where possible
    begin
      feed = RSS::Parser.parse rss, validate: false
    rescue RSS::InvalidRSSError => e
    end
    if feed
      puts "Title: #{feed.channel.title}"
      all += feed.items if feed.items.any?
    end
  end
end

# todo only items published within the last 24 hrs
all.sort_by! { |item| -item.pubDate.to_i }
all.first(10).each do |item|
  puts "  - #{item.title} (#{item.pubDate})"
end