# Function with parameter: \`f(x,p)\` or \`f(x;p)\`

**URL:** <https://discourse.julialang.org/t/function-with-parameter-f-x-p-or-f-x-p/60745>\
**Category:** Performance\
**Created:** [May 7, 2021, 9:36pm UTC](https://discourse.julialang.org/t/function-with-parameter-f-x-p-or-f-x-p/60745 "2021-05-07T21:36:48Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![amrods](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/amrods/32/2543_2.png) [@amrods](https://discourse.julialang.org/u/amrods)\
**Post date:** [May 8, 2021, 1:33am UTC](https://discourse.julialang.org/t/function-with-parameter-f-x-p-or-f-x-p/60745/7 "2021-05-08T01:33:27Z")

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I think in the announcement post of `ComponentArrays.jl` there is some discussion on performance of several similar structures: [[RFC/ANN] ComponentArrays.jl for building composable models without a modeling language](https://discourse.julialang.org/t/rfc-ann-componentarrays-jl-for-building-composable-models-without-a-modeling-language/38001)

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