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

3 Likes

Topic		Replies	Views
Gc and resize! General Usage question	12	947	December 7, 2018
Memory Pre-allocation in the global scope New to Julia question	20	1337	August 18, 2022
How to create a vector of variable length in julia? General Usage	7	11765	January 25, 2019
How to release the extra buffer after insert! an array? General Usage question	8	230	June 29, 2024
How to preallocate and reuse buffers for oft-repeated computation? General Usage question , performance , memory-allocation , profiling , speed-optimization	15	1683	July 12, 2023