Just beginning to learn Julia. I’ve realized that you can mimic a Python class using a module and mutable structs. For example, module MimicPyClass mutable struct Self{T<:AbstractFloat,D<:Integer} a::T b::T n::D end function __init__() return Self(1.0,2.0,10) end self = __init__()…

Actually, there is no need to mimic python class, because it is already exists in Julia. In a sense, python classes are subset of Julia capabilities. Compare this two implementations class PyClass: def __init__(self): self.a = 1.0 self.b = 2.0 self.n = 10 def method1(self):…

You can’t create two instances of this class I think, so why do you want to do this? In my experience it’s good to let go of the wish to have obj.method() syntax. method(obj, args…) is not worse to write (does have worse auto complete, though) and it’s more powerful because other people can extend y…

Jeff answered a question on this some time ago here: oop - How to create a "single dispatch, object-oriented Class" in julia that behaves like a standard Java Class with public / private fields and methods - Stack Overflow

You can probably create some awkward version of this in Julia. But in that case you should probably rather use python. Doing this for a larger project seems wasteful. Why not use idiomatic Julia?

Completely agree with @Skoffer here. Just a small thing: [image] Skoffer: function __init__(self::PyClass) self.a = 1.0 self.b = 2.0 self.n = 10 end currently returns 10, you should put a return self at the end to get the instance back. Also, if you desparately need __init__ to work l…

Uh, just don’t put a function named __init__ into a module or you might get some very strange behaviour. __init__() is called whenever a module is loaded.

Thanks so much for all these responses! All very useful. DNF, and several others said something like Why not use idiomatic Julia? I’ve read the style guide but I’m still having issues imagining how to do a big project using idiomatic Julia. Is there a project on Github, that is relatively simple…

Just a tiny side-note, which might also shed some light on how things are working in Python: >>> class Foo: ... def greet(self, name): ... print(f"servus {name}") >>> f = Foo() >>> f.greet("Tom") servus Tom >>> Foo.greet(f, "Tom") servus Tom Here, you can see single dispatch in acti…

[image] Nicholaswogan: Perhaps the end product should work something like this below? Advice and thoughts are welcome. using PhotoChem prob = PhotoProblem("inputfile1.yaml","inputfile2.yaml","inputfile3.yaml") sol1 = steady_state(prob) # Find steady state of ODEs using the steady-state solvers …

[image] Nicholaswogan: But before starting, I’d like to have a very solid understanding of how to do things best/fastest in Julia. It may be difficult to get a solid understanding “before starting”. So I’d suggest to start by formulating some specific small to middle-sized real problem and tr…

[image] DNF: You can probably create some awkward version of this in Julia Just another awkward version :grinning: mutable struct Foo a::Int obj::Foo inc_a::Function function Foo(a) x = new() x.a = a function inc_a(i) x.a += i return nothing …

Is it reasonable to mimic a Python class with mutable structs?

New to Julia

Eben60 April 1, 2021, 10:16am 17

Checking my Zotero bookmarks I came across this post: Workflow for converting Python scripts - #3 by tamasgal

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Is it reasonable to mimic a Python class with mutable structs?

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