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Surviving the pandemic

Phil Haack haacked

Surviving the pandemic
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haacked / upcast-example.cs
Last active Apr 21, 2022
Upcast record without more specific type properties
View upcast-example.cs
// Suppose we have the two record types
public record Person(int Id) : PersonUpdate()
public record PersonUpdate()
public string Name {get; init;}
//... bunch of other properties.
haacked / never-not.cs
Last active Mar 23, 2021
Weird roslyn waring
View never-not.cs
public interface IArgument
/// <summary>
/// The value of the argument sans quotes.
/// </summary>
string Value { get; }
public interface IArguments : IReadOnlyList<IArgument>, IArgument
haacked / ForbiddenTypeAnalyzer.cs
Last active Nov 1, 2020
Roslyn Analyzer to warn about access to forbidden types
View ForbiddenTypeAnalyzer.cs
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Diagnostics;
using Microsoft.CodeAnalysis.Operations;
View jsonconvert-bug.cs
public void StackTest()
var stack = new Stack<string>();
var serialized = JsonConvert.SerializeObject(stack, new JsonSerializerSettings
haacked /
Last active Apr 1, 2020
I would like a way to do this with the partial tag helper.

What I'm looking for is a nicer more declarative approach to Templated Razor Delegates

In Any old Razor Page or View - SomePage.cshtml

  <partial name="Shared/_PartialLayout" for="SomeModel">
    <strong>Content</strong> that will be injected into the layout, which 
 will get rendered here.
haacked / RoleProfileService.cs
Last active Sep 18, 2019
Providing Role Claims
View RoleProfileService.cs
This needs to be registered with the IdentityServer in the Startup.cs
by calling AddProfileService<RoleProfileService>() on the builder returned
by AddIdentityServer.
var builder = services.AddIdentityServer(options =>
options.Events.RaiseErrorEvents = true;
haacked / ModelBuilderExtensions.cs
Last active Nov 19, 2021
Example of applying an EF Core global query filter on all entity types that implement an interface
View ModelBuilderExtensions.cs
Copyright Phil Haack
Licensed under the MIT license -
using System;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
haacked / index.js
Created Feb 9, 2019
Probot handler for the Why Not Both app
View index.js
module.exports = (app) => {
// Respond to new issue comments
app.on('issue_comment.created', async context => {
const message = context.payload.comment.body
// The following does a rough approximation of
// trying to find a question that proposes two
// alternatives. It's not very smart about it,
// but good enough for our case.
const dichotomy = message.toLowerCase()

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To claim this, I am signing this object:

haacked /
Last active Feb 24, 2017
A selection of articles and books that have inspired some of the topics in recent talks I've given.