foldl would work, but it's going to create a ton of temporary arrays. None of the proposed efficient solutions work with hcat... I suppose if splatting is a problem I should allocate and fill in the array myself.
On Friday, November 27, 2015 at 6:39:07 AM UTC-5, Glen O wrote: > > Any chance that foldl(vcat,arr_of_arr) will do the job? > > On Sunday, 22 November 2015 23:04:26 UTC+10, Cedric St-Jean wrote: >> >> I have a big vector of vectors. Is there any way to vcat/hcat them >> without splatting? >> >> arr_of_arr = Vector[[1],[2,3],[4,5]] >> vcat(arr_of_arr...) >> >> I'm asking because splatting big arrays is a performance issue (and IIRC >> it blows the stack at some point). >> >
