Exceptional decision to go with Kotlin. For the other story, go full with C#. "is C# the holy cow? Yes it is.". Specially now when netCore is crossplatform and you can build asp.net core applications on Windows, Linux and macOS via Visual Studio Code which is also multiplatform. Nothing will beat C# in the near future. Also, at the end of 2021 Microsoft will release Net 6.0 which will include MAUI.

"For those new to .NET MAUI (standing for .NET Multi-platform App UI), Microsoft says it's "the evolution of Xamarin.Forms extended from mobile to desktop scenarios with UI controls rebuilt from the ground up for performance and extensibility."

So, C# all the way sire!

animefanx1,

First let's get your questions sorted: Which language do you think will bring me more joy?

This you will have to decide for yourself, I am a long time C# developer and have seen it grow into a very compelling platform. The language and I'd compare it more to Kotlin than Java (by a long margin). More on .NET in a bit.

say I learn F#. Is it 100% interoperable like Kotlin?

You can have 100% interop with a caveat, your F# libraries have to implement certain guidance in order to be referenced from C#. Some (dare I say most) of the differences between F# and C# are predicated on language constructs that are not available in C#. For instance F# functions that return Unit.

can they live side by side?

Yes.

Can I, then, apply to .NET jr jobs after a while, for example, or is C# the holy cow?

I don't know if I take your meaning, but let me say this: Learning either C# or F# will likely force you to understand concepts such as garbage collection, primitive types, etc. which apply to all .NET languages, thus a lot of the effort you put into .NET is bound to pay off regardless of your choice.

If it is the worst and only C# is acceptable, then which language should I learn? Dart? Go? You can't go wrong with any of these and I venture to say whether you select C#, F#, Dart or Go as your next adventure, your willingness to learn will take you to try other languages, some which mey not even exist yet!

PS1: .NET is an end to end environment now. With the introduction of Blazor and Razor pages one does not need JavaScript or other browser scripting languages, it even interops with JavaScript. PS2. Microsoft is working on unifying .NET. Soon there will be only one version: .NET 5! Caveat: Some features such as WinForms will still be specific to the windows environment but all of those are likely things you don't need in Mac or Linux

I think you can learn go instead C#. C# is cool, but Golang also cool. It can run on any OS without specific software. C# can run on linux too but it's only the .NET Core as I know. But golang is flexible. So try it and decide what do you think about Golang

If you want to learn C# to write some backend code you can also check out Node.js which is basically JavaScript running outside the browser. You can create any kind of web servers, APIs, scrapers, automation scripts, etc using all the same JavaScript.

A good entry to Node is Express.js. It is the most common web framework for Node. It's well documented and there are a lot of educational materials for it.

C# is .net framework of a programming language specially different from the programming languages you're used to. If you learn C# you will be experienceed in coding with VIsual Basic .net and also creating web development using ASP and this ASP also include JavaScript function.... I urge you to learn it

I prefer functional programming because it produces less buggy code (thus I recommend F#), and is simply better to learn this paradigm earlier on in your coding career rather than later. It can also do most stuff C# can do, namely code with .NET core. If you're going to learn .NET then you should learn Node.js+Express first though before doing web development with C#/F#

I think you can manage to find something about this topic. it's pretty popular one. ex: https://www.educba.com/c-sharp-vs-js/

Something I don't see discussed enough over the internet is the performance difference. I don't think you should worry about this. 95% of the time you won't notice the difference on your day to day projets. You will know what you need in terms of performance when you get there.

In my opinion, a modern developer should have deep knowledge about Object Oriented (OOP) and Functional Programming (FP). The programming language is something that must come later. Any good programmer should be able to switch from one programming language to another easily, if they follow OOP and FP. There are languages, though, that must absolutely be in the portfolio of a modern developer: Java, C#, Python and JavaScript. But be prepared to know also Scala, Kotlin, Swift, Go, Ruby, Rust and TypeScript.

It depends on your preferred career path, if you want to work in start-up/scale-up environments, you probably want to go with a language like Django for the rapid development (fast to production). On the other hand, C# or Java would be better for building long term and large scaled applications, although, Django could certainly achieve this as well. I also want to second that it won't hurt to know both languages, pick your technologies wisely according to the use case, don't stick to a single technology stack. :)

C# and Python are both great languages. With great communities, libraries, frameworks, opportunities. I think it will be the same in a near future.

It’s matter of your likes, and your next jobs.

Dot net core is a little faster on performance. Python more popular with dynamic types. Probably the most lovable language.

It depends.

From times to times I asked or was asked that same question. Technology aside, it's important to consider the skills and expertise that the dev team has. Whether you use language A,B or C or framework X,Y and Z, if your team has a strong background and experience with something make it count too.

I would recommend Go simply because as you mentioned, it's super light. No need to bring in the whole .NET suite to get a simple REST API up and running. Even if your API is a bit complex, Go should be able to handle it.

I started out with C# and .NET and I loved it. In my opinion, it was the perfect way to start learning the fundamentals of software development however I always felt like I was at a disadvantage when I was doing .NET development. Granted, .NET Core is now open-source and cross-platform, but I moved to Node.js simply because it is incredibly popular. I never thought I'd learn to love JavaScript it the way I did with C#, but I learned to love it pretty quickly, especially once I started using TypeScript. You get all of the benefits of C# and JavaScript all in one. If you've built a REST API with Python/Flask/Django, you'll be able to learn Node.js/Express/TypeScript well enough to migrate your API very fast and it's incredibly easy to host for free on any number of services.

I'm new to Go, I've got very little experience but the 'feel' of Go, isn't like Python in my opinion. Go has a pretty steep learning curve, much steeper than C# in my opinion. So if you are willing to consider Node/Express/TypeScript, I think you may really like it. If you're picking between Go and C#, I'd go for C# as of today, but once I am more comfortable with Go (which I anticipate being a slow process) I may change my mind.

At this moment in time, in late 2020- Node/Express/TypeScript feels like the obvious choice to me as a former C# developer.

The best language for you is the one that you know best!

Its a bit of a guess, but from your question and the difficulties you have with Python it seems to me the problem you describe is the manifestation of a bad design/architecture/code quality. These are not the problems of a language itself!

The experience you gained over the past years with your current programming language will outmatch any benefits of another language that you start from zero.

Because in the end of the day languages aren't all that different when it comes to fullfil the same task, it's more the tools, framework and ecosystem for a particular problem that make a difference.

I worked with Java, C#, Go and recently in Phyton, and I would choose Phyton over Go for WebApps, even I like compiled languages more. Go is a very simple language, I would even say maybe too simple. I can't stand all those go boilerplate if err checks, the broken filesystem, the date/time mess and many more things that aren't actually relevant for business application at all. Go has its advantages but not for WebApps.

Keep the lang and improve your skills and architecture you will benifit more from it than from a new language.

I recommend Go for backend. It's younger than C# doesn't mean it's not mature. It's already mature enough to be run on production. You can see there are already many companies in the world adopting Go as their backend business logic or tooling. I can name a few like Github, Shopify, uber, twitch, and many more. It's easier learning curve, low entry barrier, better performance than C#, better memory consumption than C#, since there's no VM/runtime needed. It's suitable for large scale system and large codebase for readibility and long maintainability. It's simpler than C# since no class, inheritance(this can cause hard to maintain software), exception, etc. You can still implement OO way in Go without those feature. Simple file structure, only main files and package files. It compiles to single binary and easy to deploy and work around it, unlike C# who compiled to IL and you need to wrap all those IL files to be run inside separated web server(even .Net/.Net Core platform provide built-in web server). For libs, don't worry, there are many open source libs you will found on Github and already adopted by many companies. Go is employed in personal, startup, even corporate level.

I suggest Go because it has a simple and clean ecosystem. The language is simple. You don’t need complex configs or installs either. You’ll be up and running very quickly. It doesn’t have as much as .NET but its standard library is more than sufficient for RESTful APIs. Concurrency is much, much easier too.

C# I’d definitely recommend later on. The .NET framework, especially core, is extremely powerful and there’s little you can’t build with it. Go won’t take you long to be productive with.

I would recommend C#, particularly Simplify.Web web-framework. C# is easy to start with (especially .NET Core). Simplify.Web is also easy to start with, no extra setup required for simple API, but on the other hand you have power of C# and full control over your API with ability to extend.

I have some systems on production using both languages. I tend to use golang if the API is small or medium size, but if I am going to build a large system definitively I use c#(asp netcore).

The database your are going to connect and the needed libraries could decide. Because both are awesome languages.

If you want to stick with python you may want to consider Fastapi. It uses Pydantic to give you strongly typed models and validation. It generates openapi docs for you out of the box. They have good documentation as well and they claim it is really fast.