I suddenly had the idea of using which in the following way
which(g,(typeof(x),))!=which(g,(AbstractSupertype,))
to determine that g had a more specific implementation then the fallback
method defined for AbstractSupertype.
Quickly testing how to use with I typed the following in the REPL and got a
confusing result.
*julia> **which(issym,(Matrix,))*
*issym(A::AbstractArray{T,2}) at linalg/generic.jl:251*
*julia> **which(issym,(AbstractMatrix,))*
*issym(A::SparseMatrixCSC{Tv,Ti<:Integer}) at sparse/sparsematrix.jl:1739*
I would have thought that which(issym,(AbstractMatrix,)) would also point
to the first method. Is this a bug? Should I file an issue?
