# Is there a direct Julia equivalent of Rust's \`retain()\` method?
**URL:** https://discourse.julialang.org/t/is-there-a-direct-julia-equivalent-of-rusts-retain-method/57391
**Category:** General Usage
**Created:** [March 17, 2021, 3:00pm UTC](https://discourse.julialang.org/t/is-there-a-direct-julia-equivalent-of-rusts-retain-method/57391 "2021-03-17T15:00:57Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@BridgeBot](https://discourse.julialang.org/u/BridgeBot)
#### Post date: [March 17, 2021, 3:00pm UTC](https://discourse.julialang.org/t/is-there-a-direct-julia-equivalent-of-rusts-retain-method/57391/1 "2021-03-17T15:00:57Z")
Is there a direct Julia equivalent of Rust’s `retain()` method?
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### Author:  [@jakobnissen](https://discourse.julialang.org/u/jakobnissen)
#### Post date: [March 17, 2021, 3:25pm UTC](https://discourse.julialang.org/t/is-there-a-direct-julia-equivalent-of-rusts-retain-method/57391/2 "2021-03-17T15:25:48Z")
Yes. `Iterators.filter` (as already answered on Slack)
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### Author:  [@arsh](https://discourse.julialang.org/u/arsh)
#### Post date: [March 17, 2021, 3:43pm UTC](https://discourse.julialang.org/t/is-there-a-direct-julia-equivalent-of-rusts-retain-method/57391/3 "2021-03-17T15:43:33Z")
Other similar options as suggested by Jerry Ling and Karl Dyrhage:
`filter!(x -> foo(x, a, b), [...])` incase `foo` takes more than one arguments.
or
```julia
filter!([...]) do element
foo(element, a, b)
end
```