After many decades of writing his famous song The Elements, I’ve inspired Tom Lehrer to add the newly discovered elements!
Entity Framework Core, SQL Server, and Deadlock victims
If you are seeing frequent deadlocks when inserting rows into a SQL Server table, here is the solution…
Generating globally unique mostly-sequential keys for DB rows across multiple processes
This article explains how you can generate GUID formatted values that are unique across processes and will also be appended to the end of SQL Server indexes.
Blazor: Scoping services to a component
Sometimes you need your component to have its own unique (isolated) dependency injection container, where all the injected services are disposed with the component.
This article explains how that can be done.
Blazor setTimeout
If you are familiar with setTimeout in JavaScript, here is how you do something similar in Blazor.
Blazor-Fluxor ranked #7 in top 10 Blazor tools!
I was really pleased to see my Blazor library “Fluxor” mentioned in this Visual Studio Magazine article!!!
Assigning a piped async result to a variable in an Angular view
If you have an Observable<x> in your component you might find yourself doing something like this {{ ( source$ | async)?.property1 }}{{ ( source$ | async)?.property2 }} This will subscribe to the source$ observable more than once. A commonly used technique to avoid this is to assign the result of the async into a view …
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Implementing a really simple Elvis Operator in TypeScript
Here is a simple routine that implements what is known as the Elvis Operator in TypeScript. In C# you can write code like thisNullable<int> age = person?.BestFriend?.Mother?.CurrentHusband?.Age); If any of the values along the way it will return a null rather than throwing a NullReferenceException. Using the class in my previous blog Get a Lambda expression …
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A type safe way of creating Angular ReactiveForms and FormGroups
If, like myself, you prefer as many of your coding mistakes to be identified at compile time as possible then you might like the following example. The FormBuilder in Angular expects us to identify our FormControls with a string name. If ever the API of your server changes then of course the names of those …
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Failed to execute ‘send’ on ‘XMLHttpRequest’: Failed to load ng:///DynamicTestModule – Solved (Angular testing)
If when you run your tests you see an error similar to this Failed to execute ‘send’ on ‘XMLHttpRequest’: Failed to load ‘ng:///DynamicTestModule/xxxxxxComponent_Host.ngfactory.js It means something in your component is throwing an exception and the test framework is returning a wrapped exception. To see the actual exception run ng test with -sm=false as a parameter …
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