In this code snippet: n = 9 buf = Int[] sizehint!(buf, n) function foo(buf) empty!(buf) for i in 1:rand(1:n) push!(buf, rand(1:n)) end end I intended to preallocate buf, so it foo(buf) can be called without further allocations. I failed because: julia> @btime foo($buf) 367.466 ns (1…

Preallocated variable length buffer with known maximum length

yuyichao August 8, 2020, 7:14am 4

Don’t use n as global variable

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