Defining a type that inherits methods

[Jérémy Béjanin]

I know that it is not possible to subtype concrete types, but is it possible in some other way to create a type that behave exactly like an existing concrete type (in my case a Matrix) such that it would keep all the methods associated with it, but would still dispatch when a more specific (ie specific to that new type) method exists?

I searched on the mailing list but could not find anything.

Thanks,

Jeremy

[Kristoffer Carlsson]

This is the issue you are looking for: https://github.com/JuliaLang/julia/issues/9821

On Saturday, October 29, 2016 at 5:54:04 PM UTC+2, Jérémy Béjanin wrote:

I know that it is not possible to subtype concrete types, but is it possible in some other way to create a type that behave exactly like an existing concrete type (in my case a Matrix) such that it would keep all the methods associated with it, but would still dispatch when a more specific (ie specific to that new type) method exists?

I searched on the mailing list but could not find anything.

Thanks,

Jeremy

[Chris Rackauckas]

Functions shouldn't be written for concrete types and instead for abstract types. If you write your function for AbstractMatrix and then make your type <: AbstractMatrix, this will work naturally. Making the type declarations on a function too strict doesn't help performance anyways.

On Saturday, October 29, 2016 at 8:54:04 AM UTC-7, Jérémy Béjanin wrote:

I know that it is not possible to subtype concrete types, but is it possible in some other way to create a type that behave exactly like an existing concrete type (in my case a Matrix) such that it would keep all the methods associated with it, but would still dispatch when a more specific (ie specific to that new type) method exists?

I searched on the mailing list but could not find anything.

Thanks,

Jeremy