Why can’t B accept two Int arguments, when A can? The answer is that a method A(a,b) exists, but a method B(a::T, b) where T<:Real does not exist. Is there a good reason for that? I have some code where I have many members of a few different types, and I don’t want to write these methods by hand, has anybody made a macro that creates the wider signature method?
julia> struct A
a::Float64
b::Float64
end
julia> A(1,1)
A(1.0, 1.0)
julia> struct B{T<:Real}
a::T
b::Float64
end
julia> B(1,1)
ERROR: MethodError: no method matching B(::Int64, ::Int64)
Closest candidates are:
B(::T<:Real, ::Float64) where T<:Real at REPL[3]:2