Promotion with SArray * Number

[KristofferC]

This behavior is different between SVectors and base arrays (different resulting element type):

julia> 3.0 * rand(SVector{3, Float32})
3-element StaticArrays.SVector{3,Float64}:
 1.7314  
 0.394485
 0.566248

julia> 3.0 * rand(Float32, 3)
3-element Array{Float32,1}:
 1.5532  
 0.506801
 1.7563  

It is a bit annoying because it will promote the array when you multiply with a literal. In base they use promote_array_type it seems.

[SimonDanisch]

Good catch! This should most definitely be different! I think that's what has been called preserving the container type.

[andyferris]

Sigh. I wish this stuff was more obvious and intuitive (not that I disagree with the motivation, but just having a simple broadcast is quite valuable).

[KristofferC]

I think julia master just swapped to this behavior. Way to be ahead of the curve @andyferris :)

[SimonDanisch]

Awww, what? That's the most classic way for me to introduce type instabilities. Where was this decided?

[KristofferC]

JuliaLang/julia#19692

[andyferris]

I find this behavior much more intuitive. Type stability is always an issue.

[andyferris]

I'm going to close this. I don't intent to fix this for v0.5 if it matches v0.6 anyway.