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Faster access for tuple of arrays #4

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mcabbott opened this issue Oct 31, 2019 · 0 comments

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mcabbott commented Oct 31, 2019

This is currently much slower than LazyArrays.Hcat, surely it can be fixed:

LazyStack.jl/test/speed.jl

Lines 24 to 29 in 19889ac

    
           @btime hcat($t1...);          #   178.379 ns (4 allocations: 1.03 KiB) 
        
           @btime collect(stack($t1));   # 1.032 μs (2 allocations: 912 bytes) -- was quicker I swear 
        
           @btime collect($(stack(t1))); # 1.065 μs (1 allocation: 896 bytes) 
        
           @btime collect(Hcat($t1...)); # 149.001 ns (3 allocations: 1008 bytes) -- match this

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