FINALLY, the Visitor Design Pattern makes Sense

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FINALLY, the Visitor Design Pattern makes Sense

Рет қаралды 7,980

Күн бұрын

Let's explore the Visitor Design Pattern while we refactor C# dotnet code.
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Пікірлер: 26

@JohnOliverAtHome Жыл бұрын

Thanks Gui. Loved the (dynamic)this hint. It makes perfect sense and is so simple (now that I've seen it)

@gui.ferreira Жыл бұрын

Great to hear, John! Thanks for taking the time to leave a comment.

@tristanstricker967 Жыл бұрын

Great video. I think the strategy pattern may be a better fit for this example but visitor is still great. You are making great c# content. Keep up the good work

@gui.ferreira Жыл бұрын

Thanks! I think the Strategy Pattern can solve the same problem but doesn't give you the same benefits as the Visitor when you have a Composite. Thanks for the kind words, Tristan!

@AndersBaumann 7 ай бұрын

The visitor is an attempt to implement a functional pattern in an OO language. But C# is getting more functional so now the visitor pattern can elegantly be replaced by pattern-matching expressions.

@FreeMindInMotion Жыл бұрын

Nice video. I have never used the pattern, but I will keep my eyes open. I like the dynamic type hint for the base class

@gui.ferreira Жыл бұрын

Glad you liked it 🙏 In fact, it's rarely used but it's good to know how it works.

@stevancosovic4706 8 ай бұрын

Very good explanation, thanks!

@gui.ferreira 8 ай бұрын

Glad you enjoyed it!

@vijaybhargavg8638 Жыл бұрын

This was brilliant.

@gui.ferreira Жыл бұрын

Thank you 🙏

@MizenDaCat Жыл бұрын

Hi Gui, do you have a video going through your IDE setup (themes, fonts, extensions)? If not, I think you should make one. What font are you using in this video?

@gui.ferreira Жыл бұрын

Hi! Thanks for the suggestion. I'm not sure if I want to do a video on this channel about it, but I will try to find a way to have that information out there. Regarding the Font, on the video, I'm using JetBrains Mono.

@jeffg4686 4 ай бұрын

The problem with the visitor pattern is fundamental. It breaks readability. It lacks domain understanding. To "Visit" isn't a verb with meaning.

@ppg68 Ай бұрын

While I agree, I find the idea of isolating the Methods into Objects quite useful, you only have to modify the code in one class without breaking anything else

@jeffg4686 Ай бұрын

@@ppg68 - I'm needs based. I never really found a need for this pattern. And when I see it used, it's never relevant, reads horrible, and fails to convince me that I need it. Just like the bridge pattern. Things start getting too pattern happy after a while...