I was experimenting with function sum and found out that it does not work for empty collections of matrices, Julia 1.7.2. The reason is there is no method zero(::Type{Array{T,N}}), thus you must specify init manually. However, there is a method zero(::Array{T,N}). As a consequence zero([1 2; 3 4]) w…

[image] Tbl: Maybe there is a reason for this, but for me it seems to be very unintuitive. Similar thing happens for function one and consequently prod . The basic reason is that the size of the matrix is not encoded in the type. (If you use an SMatrix it works fine, in contrast, because Sta…

Inconsistency between zero(x) and zero(T::Type) for matrices

Internals & Design

Tbl April 6, 2022, 8:58pm 7

A, yes, this is unfortunate. It skipped my mind this is the case. I guess there is no good fix then. Functions sum and prod becoming type unstable would be even worse.

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Inconsistency between zero(x) and zero(T::Type) for matrices

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