C# DELEGATES in 8 minutes! Learn .NET FAST!
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- čas přidán 14. 11. 2022
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So, what is C#?
C# (pronounced "See Sharp") is a modern, object-oriented, and type-safe programming language. C# enables developers to build many types of secure and robust applications that run in .NET. C# has its roots in the C family of languages and will be immediately familiar to C, C++, Java, and JavaScript programmers. This tour provides an overview of the major components of the language in C# 8 and earlier. If you want to explore the language through interactive examples, try the introduction to C# tutorials.
And what are DELEGATES in C#?
A delegate is a type that represents references to methods with a particular parameter list and return type. When you instantiate a delegate, you can associate its instance with any method with a compatible signature and return type. You can invoke (or call) the method through the delegate instance.
Delegates are used to pass methods as arguments to other methods. Event handlers are nothing more than methods that are invoked through delegates. You create a custom method, and a class such as a windows control can call your method when a certain event occurs.
Any method from any accessible class or struct that matches the delegate type can be assigned to the delegate. The method can be either static or an instance method. This flexibility means you can programmatically change method calls, or plug new code into existing classes.
To learn more, make sure to watch the video, and we promise you that you'll become a C# developer in no time! Have fun!
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Explained how it works, but not why and where ! Minus !
fr
Yea, which is key to understanding
Why: To try to impress other developers
Where: Any place you want to make it more complicated
Thanks for the simplicity !
I have a question, as I am interested in the course, but I cannot attend it at the same time for 21 days. So, is it possible to buy just the acces to its videos ? Do you have more in-depth videos about all this subjects that can be purchased ?
Do you think that sending a delegate into a entity method (following DDD) is a good practice? For example, if that delegate is a database request to get another entity that the first entity needs? Or we have to call it before? Thanks!
Hi,
No, that's not a good practice. Preferably entities should not access data directly or indirectly. Entities encapsulate business logic and they must not depend on lower-level stuff like database access :-)
Good question!
@@tutorialsEUC thanks!
I would like to learn more about Functional Programming!
I like functional :) (specifically is the C# language, not F#)
thanks
I like functional
Good video.
functional programming in an oop languange
Was going to buy your stuff….. but not now. You literally taught so little in this video and used the most pointless example.
i like functional programming
You never run the code?
i like functional
A shame that this tutorial is DYSfunctional
The explanation could have been simpler and easier to understand. Note that "simpler" does not mean less lines of code
Yeah but what is the practical use? Is it really useful? I don't understand man. Why should I use this thing? Damn I wanna give this shit up.
Hey do you know what this is for? I am stuck since 6 hours trying to understand this shit in order to understand events hahaha
Handsome man
Simp
I like how you compare it to js because I have a lot of experience in js
So true.. the reference to js was a lightbulb moment for me.. somehow seems much simpler to think of it as simply the c# version of a js callback
@@elijahgundorin1189exact same for me!
I like functional programming 🎉😊
not needed, interfaces do same job
there is a big difference between Explaining concept and Explaining a its syntax. you explained the syntax not the concept you waste my 8 min in nothing
That's an awful explanation of delegates.
fr
What's up with the dumb thumbnails. I am so happy that they haven't worked out for you.
PrintDelegate Display = Console.WriteLine;
PrintDelegate Printer = (string text) => Console.WriteLine(text);
PrintDelegate PrintToFile = (string text) =>
{
File.AppendAllText("C:/Users/kvele/Downloads/logs.txt", text);
};
void DbContext(PrintDelegate log)
{
log("DELETE FROM users");
log("SELECT * FROM users");
};
Display("Hello World");
Printer("Hello World");
PrintToFile("Hello World");
DbContext(Display);
delegate void PrintDelegate(string text);
I like functional
i like functional
I like functional