Its been months I've been learning Kotlin, I've been stuck trying to get a hang of OOP
So many types of classes is blowing my mind (abstract,sealed,data,etc)
I can't find a practical usage of it in real life situations
The project I'm working on is doing fine using functions (by the way I'm making use of jetpack compose),
Please any senior developer or knowledgeable person who has made use of OOP should enlighten me
And i also heard that JavaScript makes use of OOP (does web development use OOP too)

Do you first understand the concepts of classes and objects?

airsaylongcome:
Do you first understand the concepts of classes and objects?

I understand the basics but when getting deeper I'm blown away the below is the only thing i know about classes when represented in code

fun main() {
val human = Human(age = 18)
print(miracle.check())
}

class Human(val walk: String = "yes", val dance: String = "no", val age: Int) {
fun check(): String {
return if (age < 18) {
"ineligible"
} else "eligible"
}
}

It gets 100% easier when u build a project with it.

Because then u don't think about all the balderdash that confuses u

But how to make the project work using OOP

OOP Becomes basic

And the project becomes the main task

GREATIGB0MAN:
It gets 100% easier when u build a project with it.

Because then u don't think about all the balderdash that confuses u

But how to make the project work using OOP

OOP Becomes basic

And the project becomes the main task

Although I don't quite get what you mean i believe in time I'll get it

Okporiaku:

I understand the basics but when getting deeper I'm blown away the below is the only thing i know about classes when represented in code

fun main() {
val human = Human(age = 18)
print(miracle.check())
}

class Human(val walk: String = "yes", val dance: String = "no", val age: Int) {
fun check(): String {
return if (age < 18) {
"ineligible"
} else "eligible"
}
}

How would you explain a class and an object. In simple terms, forget technical confusing language. If you can explain it using simple terms then it would be easier overcoming the mental block you are facing

airsaylongcome:


How would you explain a class and an object. In simple terms, forget technical confusing language. If you can explain it using simple terms then it would be easier overcoming the mental block you are facing

I think a class defines what properties and functions/actions are associated with an object

You need to read on OOP first before entering Kotlin else you won't know when to apply interfaces and abstract, especially when Design patterns comes.

It's a paradigm that guides your development, without that, it might be hard to think of your code in terms of abstraction.

Okporiaku:

I think a class defines what properties and functions/actions are associated with an object

So you understand the concept. Where are you finding the challenge?

airsaylongcome:


So you understand the concept. Where are you finding the challenge?

I'm trying to know their applications in real life projets

Okporiaku:


I'm trying to know their applications in real life projets

https://www.youtube.com/watch?v=SiBw7os-_zI

Greatigboman is right, build a project also

Okporiaku:


I'm trying to know their applications in real life projets

I don't know how to explain it to you that will not be simplistic. I worked with a team that developed a Fintech app and OOP was used extensively in managing the different financial offerings for loans and savings

airsaylongcome:


I don't know how to explain it to you that will not be simplistic. I worked with a team that developed a Fintech app and OOP was used extensively in managing the different financial offerings for loans and savings

Wow, i think I'm getting it
It seems that its useful when someone creates an account in an app?

Okporiaku:
Its been months I've been learning Kotlin, I've been stuck trying to get a hang of OOP
So many types of classes is blowing my mind (abstract,sealed,data,etc)
I can't find a practical usage of it in real life situations
The project I'm working on is doing fine using functions (by the way I'm making use of jetpack compose),
Please any senior developer or knowledgeable person who has made use of OOP should enlighten me
And i also heard that JavaScript makes use of OOP (does web development use OOP too)

OOP is just a way to group variables and the functions that manipulate them together. When you are building a large application you could have up to 100 or more variables and functions. You don’t want everything lying around in the global space. You could have a variable in one part of a script, and then another developer working on another part of the software could define a variable with same name thereby introducing bugs. That’s why you have access modifiers like private and public to control whether a property or method can be modified from outside the object or not.

chukwuebuka65:


OOP is just a way to group variables and the functions that manipulate them together. When you are building a large application you could have up to 100 or more variables and functions. You don’t want everything lying around in the global space. You could have a variable in one part of a script, and then another developer working on another part of the software could define a variable with same name thereby introducing bugs. That’s why you have access modifiers like private and public to control whether a property or method can be modified from outside the object or not.

That makes sense
Thanks for the input

i use to be in this shoes some times ago.

Okporiaku:
Its been months I've been learning Kotlin, I've been stuck trying to get a hang of OOP
So many types of classes is blowing my mind (abstract,sealed,data,etc)
I can't find a practical usage of it in real life situations
The project I'm working on is doing fine using functions (by the way I'm making use of jetpack compose),
Please any senior developer or knowledgeable person who has made use of OOP should enlighten me
And i also heard that JavaScript makes use of OOP (does web development use OOP too)

create a notebook app that uses classes to create objects that hold text, then map that text to the screen, I'm a JavaScript dev but this OOP project is a standard in most if not all Object Oriented Languages.