What does 0 allocations: #=nonzero=# bytes mean?

General Usage
3

I guess it is because foo() = rand((1.3, 1)) is not type stable, foo2() = rand((1.3, 1.0)) is and does not allocate.

Chairmarks.jl actually does show why BenchmarkTools.jl shows 0 allocations:

julia> @b foo()
21.483 ns (0.45 allocs: 7.233 bytes)

It’s rounding to 0.

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