Updates to System.Text.Json samples

[tdykstra]

Related to dotnet/docs#16225

[ahsonkhan]

Otherwise, looks good.

[BillWagner]

These look great @tdykstra

I had a couple suggestions that you can choose to add, if you'd like. Then, you can when ready.

[BillWagner]

I'd consider making this a readonly struct:

Suggested change

	public struct ImmutablePoint
	public readonly struct ImmutablePoint

[BillWagner]

This would be a great use for the pattern matching switch expression:

Person person = typeDiscriminator switch
{
    TypeDiscriminator.Customer => new Customer();
    TypeDiscriminator.Employee => new Employee();
    _ => throw new JsonException();
};

[tdykstra]

Done, except I had to comma-separate the lines instead of terminating them with semicolon. 😄

BTW, this pattern doesn't seem to be in the C# guide switch article , but it is in the C# 8 what's new.

[ahsonkhan]

I didn't realize there was a json file checked-in here. Why did it show up as binary?

In any case, should we point to the reference of where we got this snippet from (either in the comment within the JSON or as a note in the text before/after it)?

samples/snippets/core/system-text-json/csharp/Universities.json

Line 1 in 9ce7c1b

[

samples/core/json/Program.cs

Lines 18 to 19 in 9ce7c1b

	// The JSON data used for the samples was borrowed from https://github.com/Hipo/university-domains-list
	// under the MIT License (MIT).

The JSON data used for the samples was borrowed from https://github.com/Hipo/university-domains-list under the MIT License (MIT).

[tdykstra]

It's UTF-16 LE, and it only has fictional data.

[ahsonkhan]

it only has fictional data.

Ah gotcha. Didn't realize that.