# Suggestion: Fortran-like Keyword to Assert Function is Pure

**URL:** https://discourse.julialang.org/t/suggestion-fortran-like-keyword-to-assert-function-is-pure/63047
**Category:** Internals & Design
**Created:** [June 16, 2021, 8:34pm UTC](https://discourse.julialang.org/t/suggestion-fortran-like-keyword-to-assert-function-is-pure/63047 "2021-06-16T20:34:37Z")
**Posts on this page:** 1
**Showing post:** 51

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### Author: ![Juliet](https://avatars.discourse-cdn.com/v4/letter/j/97f17d/32.png) [@Juliet](https://discourse.julialang.org/u/Juliet)
#### Post date: [June 19, 2021, 9:54pm UTC](https://discourse.julialang.org/t/suggestion-fortran-like-keyword-to-assert-function-is-pure/63047/51 "2021-06-19T21:54:48Z")

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> [@gustaphe](#):
>
> The difference between Julia and Fortran is that Julia’s compiler is not entirely potato.

There is 68 years of efforts by thousands of experts and major vendors like IBM, Intel, Cray, NVIDIA, NAG, … behind the Fortran compilers. I doubt if any one of them have been potato for decades as you say, unless you provide evidence for such claims.

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