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Perhaps surprisingly, C# and C share very little, other than some superficial similarities in syntax - and it's not until you understand both languages pretty well that you can appreciate (or even notice!) many of them!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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C# is part of the C like programming language family. (like C++, rust, ...)
They all share some syntactic similarities, but they quickly diverge into their own specific language.
CI/CD = Continuous Impediment/Continuous Despair
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My opinion is that if you learn any programming language at all then you have learned 50% of all of them, arbitrary percentages notwithstanding. It's more "true" if we subdivide into things like functional vs OOP languages.
A loop is a loop, the core of just about every data structure tend be an array, a hashmap is a hashmap, race conditions, resource contention, thread safety, cyclomatic complexity, atomicity... All these concepts and a great many more are going to exist no matter what language you are working in.
This is part of the argument I think I have read before which posits that multilingual people tend to pick up programming a bit easier and already have the neurons knocking around upstairs in much an order suitable. This makes sense because programming is just the language we use to command machines.
There are/can be vast differences and the nuances do often matter. But the concepts - those bits that help you understand what matters and what does not? These are very universal.
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I agree.
Having been through a Fortran, Cobol, PL/I, C cycle, the baby steps for each were fewer and fewer as one transitioned.
"A little time, a little trouble, your better day"
Badfinger
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Once you've learned one of the "curly brace languages", you've learned nearly all of them because you've learned the concepts behind them. All the same concepts apply to all languages. After you learn the concepts, it's just a matter of semantics in describing what you want the code to do.
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Seems like you asked ChatGPT to create questions for you to ask here nice try. NEXT !!!
Caveat Emptor.
"Progress doesn't come from early risers – progress is made by lazy men looking for easier ways to do things." Lazarus Long
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I don't think of them as much the same. They're both C family so the syntax is similar, but that's about where the similarities end.
The datatypes for example, appear the same but they are not. A C int is not equivalent to a C# concept of an int as C's word size is not fixed, but varies by machine. Floats and doubles are the same but that probably has as much to do with IEEE as anything.
Using pointers in C# raises the question of why not use C? More importantly, the unsafe context only works on code that is fully trusted, greatly limiting where and how it can be deployed. There's almost nothing you can do with unsafe that you can't do with the marshalling infrastructure. Finally, using pointers often harms GC performance because you have to pin memory addresses so they don't get relocated during a collection.
I don't know how hard it is to grasp OOP. I picked it up in the 1980s. It has been too long, but I don't remember it being especially difficult - particularly once you understand how C++ implements classes and that you can make virtually the same constructs in C, just more verbose.
C is cross compatible source code. C# is cross compatible binary code. C# requires a VM. C does not. C runs in far more places - places where C# will never run.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Agree, except: C# requires a VM ... unless I misunderstood your statement
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C# requires a VM. C does not.
I wrote that. I can defend it. The CLI is a virtual machine. Its instruction set is IL. Its runtimes are the CLR.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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But it will compile finally to the target machine native processor code
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It's JIT compiled, which is an implementation detail of the VM, similar to javascript on a modern browser.
Furthermore, setting aside that, it still cannot manage memory without the CLI, even compiled to native code. It requires the virtual machine in order to do basic operations. That machine is not simply part of the run time library like C's heap stuff. It's garbage collected - a process.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Well said. Good words.
"A little time, a little trouble, your better day"
Badfinger
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As OriginalGriff said the similarities between C and C# are pretty superficial. It's really just syntactical: braces for for blocks, semicolon statement separators, simple data types (int, char, float, etc.) and simple control statements (if, for, while, etc.), other things I can't think of right now.
C, C#, C++, Java, Go, Rust, Kotlin, others? All share much of this same basic syntax. It makes it somewhat simpler to learn or move between them.
My understanding is C# was Microsoft's answer to Java after losing it's court case against Oracle over the future of Java in the late 1990's.
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As an old member here answered once...
Do not forget that my compiler compiled your compiler.
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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A proper C compiler is implemented in C and compiles itself. 
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Doesn't that hold for the great majority of languges/compilers since around 1970?
Usually you need to create a small bootstrap in some other language. I was told (so I have no URL to back it up) that Nick Wirth attempted to write a compiler for the very first, super simple core Pascal (1970) in Fortran, but gave up and reverted to assembler - I don't know for which machine. Once this was running, all following extensions to full Pascal was written in the simpler Pascal dialect, as is the common strategy for all language/compiler bootstrapping.
I guess that languages deviating a lot from the algorithmic style (such as APL, Prolog, SNOBOL, Lisp, ...) have compilers / interpreters written in other languages, at least for production work. (I would be sort of surprised if no APL programmer has written an APL interpreter in APL!) But for the algorithmic languages group, the great majority have compilers expressed in themselves. This, of course, does not prohibit compilers written in other languages - I guess one main reason for that is that the compiler developer knows C only.
I know of one case where no bootstrapping in another language was required: The compiler was written in itself. Its developer put the compiler source up on the document holder by his keyboard, and compiled each statement in his head, typing in the machine instructions he knew that the compiler would generate. Of course he knew - he had written the compiler! This was in 1974.
Admittedly, this was a rather simple language - abstraction level was lower than K&R C. Yet it illustrates the principle of writing a compiler in its own language.
Religious freedom is the freedom to say that two plus two make five.
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You can end any initializer list and enumeration with a comma, just as in C.
... = { 1, 2, 3, };
Dennis M. Ritchie (may God rest his soul in peace) wrote that he was always forgetting to include a comma at the end of a row, when editing/extending such a list, and therefore changed the underlying grammar so that the C compiler accepts a last comma.
40 years later and many derived languages, nobody dared to change this.
It would be interesting to check if this syntax still applies to "modern" languages like JavaScript, Rust etc.
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I learned C# many years ago coming from a Delphi background.
I found C# not that different from Delphi if you substitute begin and end with { and }
After all they were both developed by the same person. (Anders Hejlsberg - Wikipedia[^])
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Has anyone noticed that when you get a vscode update, the release notes never call out the bugs that were fixed.
<snark>I bet it's because the list is so large that it would cause the release notes file to be larger than the max possible size...</snark>
<moresnark>How do they exppect us to be able to reliably develop our own buggy code if the tools they provide us are so buggy?</moresnark>
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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They expect us to be dazzled by the list of wonderful enhancements.
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The latest whiz-bang is "text to speech".
Speak this MS - "I don't give a f*ck about text to speech.".
".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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Still better than the vast majority of "app store"-type release notes, which are invariably some variation of:
Release Notes: Bug fixes and performance improvements.
Sometimes with slightly more embellishment, but it usually translates to the same meaningless BS. 
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Or so short, because they didn't fix a damn thing.
If you can't find time to do it right the first time, how are you going to find time to do it again?
PartsBin an Electronics Part Organizer - Release Version 1.4.0 (Many new features) JaxCoder.com
Latest Article: EventAggregator
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Microsoft fix bugs? 
When did they start doing that?
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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OriginalGriff wrote: Microsoft fix bugs?
No need when you can just enhance over them.
User: "Microsoft, have you fixed the xyz bug?"
MS: "Did you see the list of 300 enhancements including new fonts and icons?"
User: "Oh, look at all the shiny."
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