# Fast 4D argmax

**URL:** https://discourse.julialang.org/t/fast-4d-argmax/58566
**Category:** Performance
**Tags:** tullio
**Created:** [April 4, 2021, 6:10pm UTC](https://discourse.julialang.org/t/fast-4d-argmax/58566 "2021-04-04T18:10:27Z")
**Posts on this page:** 1
**Showing post:** 26

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### Author: ![jroon](https://avatars.discourse-cdn.com/v4/letter/j/fbc32d/32.png) [@jroon](https://discourse.julialang.org/u/jroon)
#### Post date: [April 5, 2021, 8:34pm UTC](https://discourse.julialang.org/t/fast-4d-argmax/58566/26 "2021-04-05T20:34:42Z")

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That all sounds awesome! To give you my perspective on how I’d like to use JuliaCall → I’m fluent enough in R to be effective at getting my work tasks done quickly and dabble with making packages etc (nothing released yet), I expect it would take me a while to get to that level in Julia. But I would like to splash in snippets of Julia here and there were R is particularly slow, as opposed to writing large functions outright. I know many people use Rcpp in this way, but I’ve always found C++ to be utterly impenetrable for me. Learning Julia seems more achievable for me! So from that point of view, achieving blistering speed via a `julia_unsafe_call` for short functions sounds very appealing, but, I do understand why its something you need to think carefully about also! In any case JuliaCall is already an awesome package - thank you!

I must say, the response to my query here has been great and I’m blown away at all the options presented, and speeds that can be achieved - thank you all for the time you have put into this!

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