techradar

Program.cs

// See https://aka.ms/new-console-template for more information

using System.Text;
using CodeHollow.FeedReader;

const int readCountPerFeed = 10;

string[] sites = new[]
{
    "https://feed.infoq.com/",
    "http://feeds.dzone.com/home",
    "https://news.content.smithbucklin.com/acm/TechNews.xml",
    "https://cacm.acm.org/news.rss",
    "https://cacm.acm.org/blogs/blog-cacm.rss",
    "https://cacm.acm.org/opinion.rss",
    "https://dev.classmethod.jp/feed/",
    "https://aws.amazon.com/jp/blogs/news/feed/",
    "https://cloudblog.withgoogle.com/rss",
    "https://azurecomcdn.azureedge.net/ja-jp/blog/feed/",
    "https://martinfowler.com/feed.atom",
    "https://www.joelonsoftware.com/feed/",
    "https://www.developertoarchitect.com/index.xml",
    "https://weekref.net/feed.atom",
    "https://blog.jetbrains.com/feed/",
    "https://www.publickey1.jp/atom.xml",
};

Console.OutputEncoding = Encoding.UTF8;
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);

foreach (var site in sites)
{
    try
    {
        var items = (await FeedReader.ReadAsync(site))
            .Items
            .OrderByDescending(x => x.PublishingDate)
            .Take(readCountPerFeed)
            .ToArray();

        var item = items[Random.Shared.Next(0, items.Length - 1)];

        Console.WriteLine($"{item.Title} ({item.PublishingDateString}): {item.Link}");
    }
    catch (Exception e)
    {
        Console.WriteLine($"skipped: {site}");
    }
}

RandomFeed.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net6.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="CodeHollow.FeedReader" Version="1.2.4" />
  </ItemGroup>

</Project>