Announcing Deno 2 — A huge release for the “what if I reinvented Node again from scratch?” runtime. Backwards compatibility with Node is a headline feature, but there’s a lot more baked in.
This is a guide that everyone can use to learn about the practice of front-end development. It broadly outlines and discusses the practice of front-end engineering: how to learn it and what tools are used when practicing it in 2019.
Microservices Adoption in 2020
Everyone’s talking about microservices. Who’s actually doing it?
Web sites are made of lots of things — frameworks, libraries, assets, utilities, and rainbows. Bower manages all these things for you.
With this newest Blazor release we’re pleased to announce that Blazor is now in official preview! Blazor is no longer experimental and we are committing to ship it as a supported web UI framework including support for running client-side in the browser on WebAssembly.
We’re excited to share all the new features and improvements in .NET 8 Preview 5! This release is a follow-up to the Preview 4 release. You’ll continue to see many more features show up with these monthly releases. .NET 6 and 7 users will want to follow this release closely since we have focused on making it a straightforward upgrade path.
We’re excited to share all the new features and improvements in .NET 8 Preview 4! This release is a follow-up to the Preview 3 release. You’ll continue to see many more features show up with these monthly releases. .NET 6 and 7 users will want to follow this release closely since we have focused on making it a straightforward upgrade path.
باید عرض کنم بله وقتی کاربری یافت نشد چه کاری می‌توانیم انجام دهیم؟
مطلب پایه‌ای در مورد صدور استثناءها در اینجا هست: Dont Use Exceptions For Flow Control و قسمتی از آن به این صورت است:
Errors should be handled via exceptions, but successes shouldn't
مشکلی که در اینجا هست این است که بازگشت null یک کاربر در یک کوئری، یک error نیست؛ یک بازگشت و عملیات موفقیت آمیز است. به همین جهت صدور استثناء برای دریافت آن نباید رخ دهد:
The typical meaning of the word "exception" is an event that is unexpected rather than part of normal operation; otherwise people would just say "event"
و اینکه نتیجه‌ی یک متد باید در همان متد به صورت استثناء درنظر گرفته شود، غیرضروری است و این تصمیم گیری باید به عهده‌ی فراخوان گذاشته شود. گاهی می‌خواهیم بررسی کنیم کاربری در دیتابیس هست؟ اگر بله، آ‌‌ن‌را تکراری ثبت نکنیم. گاهی می‌خواهیم بررسی کنیم اگر در دیتابیس هست، اطلاعات او را به روز رسانی کنیم. اینکه کوئری مدنظر نال بر می‌گرداند، تصمیم گیری در مورد اهمیت آن ربطی به آن متد ندارد و صرفا به عهده‌ی فراخوان است:
Methods should have a way to indicate various kinds of results. Whether those results are treated as exceptional should depend on the caller.
In this section, I’m going to cover how you can use SignalR outside of a Hub. In most asp.net core applications, you will likely want to communicate with the connect clients from within your application but outside of a Hub. You can accomplish this by using the HubContext.
For example, an ASP.NET Core MVC Controller or any other class that is instantiated by ASP.NET Core’s Dependency Injection.
The HubContext allows you to send messages to your connected clients. It has many of the same features to communicate with clients as when you are inside of a Hub.
Hanselminutes and CodeNewbie are teaming up to produce two episodes a week for the month of March, featuring incredible makers in the hardware space.
There will be new content every weekday in March, so subscribe and join us daily.
