LoadError: ArgumentError: Sampler for this object is not defined

[StevenWhitaker]

rand expects an AbstractRNG object, not a type. It’s like the difference between 1 and Integer; 1 is an instance of an Int <: Integer, whereas Integer is a type. Hopefully this example helps illustrate:

julia> f(a::Integer) = a
f (generic function with 1 method)

julia> f(::Type{<:Integer}) = "f(Integer) was called"
f (generic function with 2 methods)

julia> f(1)
1

julia> f(Int)
"f(Integer) was called"

@wccarleton

And, why does it seem to work in the call to Random.Sampler, but not in the call to rand?

rand wants an AbstractRNG object, whereas Random.Sampler just wants the type. Not sure why Random.Sampler just needs the type though.