This is a subtle point I wanted to learn a bit more about. I want to know all reasons why I might wish to write: # assume we have `abstract type MyType end` MyType[x...] Rather than Any[x...] Assuming we have: abstract type MyType end struct MyTypeImpl1 <: MyType; end struct MyTypeImpl2 <: My…

Efficiency of abstract types vs `Any`

mbauman Split this topic June 2, 2025, 4:53pm 12

Topic		Replies	Views
Why don't `Any` constraints check that the parameter is a type Internals & Design	12	656	February 2, 2023
Struct with abstract-type field General Usage question	22	7603	June 24, 2020
What is the difference between abstract, composite, and concrete types. General Usage	7	6114	March 15, 2021
Enum versus abstract typing Performance question , struct , enum	8	1301	October 7, 2020
About type declarations General Usage question	7	472	May 1, 2020