Hello, I have some Vectors of StaticArrays and I use them in functions like this: fun(vec[1],vec[2],vec[3]) where each position of vec is a StaticArray. It would be helpful to do something like this: fun(vec[1:3]) fun(vec[1:3]...,) because I’m declaring these functions with 3 or 4 inputs. I no…

ntuple tends to be able extremely fast in my experience. Disproportionately so. For the most performance criticsl code, that I benchmark carefully, I often end up using ntuple

Performance tips on turning arrays into tuples

New to Julia

healyp February 20, 2021, 4:47pm 13

Can you elaborate? Does the following contradict the above?

julia> const c=1000
1000

julia> @btime [2i for i in 1:c];
  864.123 ns (1 allocation: 7.94 KiB)

julia> @btime ntuple(i->2i, c);
  38.839 μs (751 allocations: 43.39 KiB)

Thanks.

Topic		Replies	Views
Vectors vs. Tuples and multiple dispatch New to Julia performance	3	961	April 14, 2021
Performant way to create ntuple? General Usage ntuple	2	1884	September 8, 2017
Subset tuples with macros General Usage tuple	10	1392	February 17, 2019
Type unstable function returning a tuple General Usage	34	1435	November 3, 2020
Splat-to-append to tuple-of-arrays, or push! on array-of-arrays? General Usage question	4	1872	May 17, 2018

Performance tips on turning arrays into tuples

Related topics