std(x::AFArray,1) return Array

[ngphuoc]

julia> a=rand(AFArray, 3,3)
AFArray: 3×3 Array{Float32,2}:
 0.33449   0.453951  0.814086
 0.967666  0.577112  0.123631
 0.497428  0.268658  0.215376

julia> std(a,2)
3×1 Array{Float32,2}:
 0.24966
 0.422409
 0.149849

julia> mean(a,2)
AFArray: 3×1 Array{Float32,2}:
 0.534176
 0.556136
 0.327154

julia> std(a,1)
1×3 Array{Float32,2}:
 0.328782  0.155266  0.374966

ArrayFire has std() is somewhat different than julia default, equivalent to std(a, 1; corrected=false).