Agreed: the current ambiguity system has some unfortunate properties. — John
On Jan 6, 2014, at 1:41 PM, Dahua Lin <[email protected]> wrote: > In base/linalg/diagonal.jl: line 24 - 27 > > it defines the following functions: > > + (Diagonal, Diagonal) > - (Diagonal, Diagonal) > - (Diagonal, AbstractMatrix) > - (AbstractMatrix, Diagonal) > > So when you write Diagonal - DataMatrix, the compiler doesn't know which > method to use. > > But for +, there is not such a problem ... > > I don't know why they don't define + (Diagonal, AbstractMatrix) and + > (AbstractMatrix, Diagonal) .... > > I think these things need a serious cleanup. > > - Dahua > > > > On Sunday, January 5, 2014 11:13:27 AM UTC-6, John Myles White wrote: > Anyone have a sense why Diagonal{T} is now ambiguous with DataArray, but only > for subtraction? >
