PeLib
MediatR
PeLib | MediatR | |
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4 | 53 | |
6 | 10,641 | |
- | - | |
0.0 | 5.9 | |
over 1 year ago | 8 days ago | |
C++ | C# | |
GNU General Public License v3.0 only | Apache License 2.0 |
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PeLib
- How small is the smallest .NET Hello World binary?
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Thoughts on building on a VM (in particular, .NET/CLR) but not "exposing" the underlying VM?
I'm usually working with the third edition of the ISO 23271 standard, which corresponds to ECMA 335 5th Edition. There is also the book ".NET IL Assembler" (2014) by Serge Lidin which gives some additional context and a good structure to learn the details. My compiler is written in C++, not depending on the .Net framework; I don't use the reflection and emit features of .Net, but https://github.com/rochus-keller/Pelib/ to generate assemblies; also the generated code only requires minimal mscorlib.dll features, so I can use a minimal CLR.
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KT/COBOL — Choosing a VM edition — I need to hear your experiences with the VM you're currently using for your project.
Most of my languages have VM backends; see e.g. https://github.com/rochus-keller/Oberon; I implemented different backends generating LuaJIT bytecode; a year ago I switched to Mono which is based on ECMA-335; here is a discussion why I switched: https://github.com/rochus-keller/Oberon/releases/tag/IDEv0.9.0; I implemented utility libraries for both LuaJIT and CIL bytecode; see https://github.com/rochus-keller/LjTools/, https://github.com/rochus-keller/Pelib/ and https://github.com/rochus-keller/MonoTools/. I evaluated many VMs and think the mentioned ones are best suited. There were a lot of challenges with both technologies, what is to be expected, and too much to describe here.
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Is the Mono CLR really slower than CoreCLR?
And as I understand now achieving optimal performance with CoreCLR requires inside know-how of RyuJIT and Roslyn (which I don't have anyway), i.e. ECMA-335 alone is not sufficient; the actual compilation target to achieve optimal performance with CoreCLR is therefore Roslyn, not ECMA-335; of course I could generate C# instead of IL, but then I would depend on the framework and slow down the compiler. My current code generator based on https://github.com/rochus-keller/PeLib is about 30 times faster than ILASM.
MediatR
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The Monad Invasion - Part 2: Monads in Action!
You probably noticed that .SetName() returns a Either. You may have come across Unit in libraries like MediatR or Language-Ext. It's a simple construct representing a type with only one possible value. We use it as a placeholder for operations that do not return a value but may return another state. In our example, .SetName() is a Command that does not return a value but may fail. Therefore, the monad Either carries two possible states: Right (without value) or Left (with an Error).
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How small is the smallest .NET Hello World binary?
The widely used MediatR library[0] could be used to do that as well, just FYI.
[0]: https://github.com/jbogard/MediatR
- Cannot use disposed service
- Exception handling between controller and service
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CQRS: How to handle duplicate queries inside a CommandHandler
Hope this GH issue shed some light on why injecting handler inside another handler is not good https://github.com/jbogard/MediatR/issues/400
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Is MediatR the only real CQRS solution for .Net?
From: https://github.com/jbogard/MediatR
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Easiest way to build the fastest REST API in C# and .NET 7 using CQRS
I gave it a go and I was impressed how easy and fast it was to set it all up. Since I'm not a big fan of REPR pattern almost all my projects are using CQRS pattern with a help of MediatR ](https://github.com/jbogard/MediatR) I immediately started going over something similar that Fast Endpoints offer which is a command bus.
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MVVM Question: How do you manage the interaction between Model and ViewModel?
I'd use a dedicated event bus based on Reactive Extensions or MediatR to publish domain events from your domain services. This probably doesn't solve all your ViewModel update problems as is, maybe you need to revise the granularity (maybe you can have smaller ViewModels that refresh single property that exposes the Model) and lifespan (sometimes you can create a ViewModel, make it perform it's task and then discard it completely) of your ViewModels.
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Async Methods after setting a property.
If you're finding yourself in a situation where you need to turn this behavior into a pattern because there are a lot of View Models that need to execute async business logic in response to some changes, I'd go with something like MediatR or Reactive Extensions. The idea is, again, that some other, probably business-level, component listens to changes in a decoupled way (that means it doesn't subscribe directly to your View Model, but to an event bus instead). View Model publishes change events to the event bus, and business-component reacts to these events by executing the business logic.
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I don't get why I should use Redux
What people really want is to design the logic of an app independently from the component hierarchy. That means you need to store state somewhere other than the components and you need to dispatch events that are not attached to the component hierarchy. Also, a one way data flow has well known benefits as described by things like CQRS, RabbitMQ, and MediatR.
What are some alternatives?
core - .NET news, announcements, release notes, and more!
Mediator.Net - A simple mediator for .Net for sending command, publishing event and request response with pipelines supported
SharpLab - .NET language playground
RabbitMQ - Open source RabbitMQ: core server and tier 1 (built-in) plugins
Oberon - Oberon parser, code model & browser, compiler and IDE with debugger
Polly - Polly is a .NET resilience and transient-fault-handling library that allows developers to express policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner. From version 6.0.1, Polly targets .NET Standard 1.1 and 2.0+.
LjTools - LuaJIT 2.0 bytecode parser, viewer, assembler and test VM. Lua 5.1 parser, IDE and debugger.
Brighter - A framework for building messaging apps with .NET and C#.
Semi.Avalonia - Avalonia theme inspired by Semi Design
ApiEndpoints - A project for supporting API Endpoints in ASP.NET Core web applications.
Citrus.Avalonia - Modern styles for Avalonia controls.
FluentValidation - A popular .NET validation library for building strongly-typed validation rules.