# LinearMaps.jl

**URL:** https://discourse.julialang.org/t/linearmaps-jl/79413
**Category:** General Usage
**Tags:** linearalgebra
**Created:** [April 13, 2022, 4:10am UTC](https://discourse.julialang.org/t/linearmaps-jl/79413 "2022-04-13T04:10:31Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![gdalle](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/gdalle/32/27854_2.png) [@gdalle](https://discourse.julialang.org/u/gdalle)
#### Post date: [April 13, 2022, 6:06am UTC](https://discourse.julialang.org/t/linearmaps-jl/79413/5 "2022-04-13T06:06:56Z")

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Maybe using ComponentArrays is faster than implementing the AbstractVector yourself?

> [@Matrix free GMRES with structs?](https://discourse.julialang.org/t/matrix-free-gmres-with-structs/79364/2):
>
> Maybe use [https://github.com/jonniedie/ComponentArrays.jl](https://github.com/jonniedie/ComponentArrays.jl) ?

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