There are many cases where we would like to assign multiple parents to a given type, e.g: abstract type Person end abstract type Soldier <: Person end abstract type Civilian <: Person end abstract type Man <: Person end abstract type Woman <: Person end struct PrivateClubMember <: Woman, Soldier…

In a lot of cases I’d guess you can just reorg what you’ve written to make it work. abstract struct AbstractJobType end struct Soldier <: AbstractJobType end struct Civilian <: AbstractJobType end abstract struct AbstractSex end struct Male <: AbstractSex end struct Female <: AbstractSex end stru…

[image] viraltux: does not support multiple parent types multiple inheritance is unlikely to be ever supported, probably to the similar degree of support extending concrete types…

[image] DNF: Multiple inheritance, probably never. I cannot dig up a cite now, but I think it is widely considered to be undesirable. [image] jling: multiple inheritance is unlikely to be ever supported, probably to the similar degree of support extending concrete types… I don’t know a…

[image] tbeason: In a lot of cases I’d guess you can just reorg what you’ve written to make it work. Thank you! I’ll have a go to this approach and see how it goes!

if you read that you will see a trait system is more likely. Which is understandable as Rust picked up nicely and people already implemented toy Trait system using current type system.

[image] jling: if you read that you will see a trait system is more likely. Which is understandable as Rust picked up nicely and people already implemented toy Trait system using current type system. I’m not sure what part of that discussion makes you think that traits are more likely. In my …

There are no interdependencies or anything of the sort (well both use LLVM but that goes for many others). It’s just that looking at the implementations of others is a nice way to evaluate how they work and what implementations are out there, if there is something very cool out there, it’s always wo…

[image] gbaraldi: There are no interdependencies or anything of the sort (well both use LLVM but that goes for many others). It’s just that looking at the implementations of others is a nice way to evaluate how they work and what implementations are out there, if there is something very cool out…

[image] viraltux: When it comes to languages to draw inspiration from for Julia, in this context, maybe Matlab is more appropriate :grimacing: I think the reason for taking inspiration from Rust is that it is a new language that is considered to be modern and well-designed and using best pra…

[image] DNF: Taking inspiration from Matlab beyond surface syntax (which is ok) is definitely not something I would like to see. That’s what I meant (syntax), and in that context I would also advice R. User experience is very important besides well designed internals. Types with multiple pare…

[image] viraltux: That’s what I meant I though you were advocating taking inspiration from Matlab language design, because it has multiple inheritance. (Multiple inheritance in general is hugely controversial, afaik.) [image] viraltux: and in that context I would also advice R R? Well…

Multiple Parent Types: How to go about it?

General Usage

mbauman Split this topic August 27, 2021, 3:57pm 24

11 posts were split to a new topic: Deep dive detangling terms: multiple inheritance vs. traits

Topic		Replies	Views
Why does Julia not support multiple traits? Internals & Design traits	44	7977	August 14, 2017
Interfaces/traits in julia 2.0 and multiple inheritance Internals & Design traits , interface	37	3289	May 7, 2025
Workaround for traditional inheritance features in object-oriented languages General Usage inheritance , structtypes	40	10406	November 14, 2017
Feasibility of adding multiple inheritance to Julia Internals & Design interface	36	2859	October 31, 2023
Deep dive detangling terms: multiple inheritance vs. traits General Usage inheritance , traits	10	822	August 24, 2021

Multiple Parent Types: How to go about it?

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