Why does Random.seed!() return different results in Atom and VSCode?

Tooling VS Code
1

I am trying to run Documenter.jl and the output results are different that the expected results due to a difference in sampling. I can reproduce a seeded result using 1 in both cases but different outputs! Any thoughts?

2

Why don’t you provide a seed argument to seed!()?
The documentation seems to suggest this https://docs.julialang.org/en/v1/stdlib/Random/#Random.seed!

Reseed the random number generator: rng will give a reproducible sequence of numbers if and only if a seed is provided.

3

Thanks! I generated the error using Random.seed!(1) and rand(2) to test. The actual issue is that the seed does not produce the same sequence in version 1.6.5 and version 1.7.1. What I had not realized is that both Atom and VSCode were on different releases. I know ther were some changes mad to move to Xoshiro 256+++ but I set is to Mersenne Twister for both tests. Really weird, no?

4

Vscode is not on any release. you either have julia in your path or it is specified in the vscode settings.
You may want to consider GitHub - JuliaRandom/StableRNGs.jl: A Julia RNG with stable streams

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