How do we create classes in Julia that involves the init part in Python?

I always liked this blog and I think it can help people understand the difference with an actual example. [image] Defining Custom Units in Julia and Python I’ve been writing code to deal with temperature in different units Celsius, Kelvin and Fahrenheit, because I do calculations involvi…

Julia does not have classes in the object-oriented sense as it is not an object-oriented language. The main paradigm of Julia which replaces object-oriented programming is multiple dispatch , see here . That said, the closest analogy to a Python class is a mutable struct (though you should default t…

[image] ExpandingMan: Julia does not have classes in the object-oriented sense as it is not an object-oriented language. Out of curiosity. What exactly does it mean to say that Julia is not object-oriented?

big question. A language that is designed to be “object-oriented” is, at its philosophical and pragmatic core, a playground for sculpting with your own or other persons’ clay. Objects are empty until they become designed with purposeful capabilities; and then they become both coin and cloth of the …

[image] e3c6: Out of curiosity. What exactly does it mean to say that Julia is not object-oriented? I take it to mean that methods are not owned by classes. I don’t claim any formal computer science knowledge, and I can imagine the distinction being rather hazy snice, for example, structs ce…

[image] e3c6: Out of curiosity. What exactly does it mean to say that Julia is not object-oriented? Mostly that it doesn’t have classes. Despite classes having no place in Alan Kay’s original conception of object oriented programming, but these days when people say “object oriented” they mean…

Can someone maybe give an example of how these structs and types work assuming that you have to define the __init__part in a class in python Thank you

It’s unclear (to me, at least) quite what you’re asking here. Do you want to know how to construct instances of types in Julia? Using __init__ in Python as a reference point may not be helpful since that’s not how things work in Julia. Have you read the section on composite types (aka “structs”) in …

Take for example this python code, how can you translate to Julia class Employee: empCount = 0 def init(self, name, salary): self.name = name self.salary = salary Employee.empCount += 1 def displayCount(self): print(“Total Employee %d” % Employee.empCount) def displayEmployee(self): print(…

Perhaps something like this const GLOBALS = Dict(:empCount=>0) struct Employee name::String salary::Float64 function Employee(name::AbstractString, sal::Real) GLOBALS[:empCount] += 1 new(name, sal) end end display_e…

So basically you can write a function inside structs? In a case where I would like to eliminate the global, how will that be possible? Am still new to julia so I would like to see a simple code without the Base.show. Thanks for your enlightenment.

Classes in Julia

General Usage

StefanKarpinski Split this topic November 20, 2021, 3:19pm 14

3 posts were split to a new topic: Who invented object oriented programming?

Topic		Replies	Views
From Python to Julia General Usage question	6	635	March 26, 2024
Is it reasonable to mimic a Python class with mutable structs? New to Julia	16	3261	April 1, 2021
Python __call__ equivalent in Julia New to Julia question	5	1258	April 3, 2020
Private and protected attributes in OOP New to Julia	8	1517	August 26, 2023
How to actually replace OO structures in Julia? New to Julia struct	5	1115	November 9, 2021

Classes in Julia

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