# Elegant threaded \`foreach\`
**URL:** https://discourse.julialang.org/t/elegant-threaded-foreach/67489
**Category:** New to Julia
**Tags:** parallel, multithreading
**Created:** [September 1, 2021, 10:20am UTC](https://discourse.julialang.org/t/elegant-threaded-foreach/67489 "2021-09-01T10:20:07Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@stepanzh](https://discourse.julialang.org/u/stepanzh)
#### Post date: [September 1, 2021, 10:20am UTC](https://discourse.julialang.org/t/elegant-threaded-foreach/67489/1 "2021-09-01T10:20:07Z")
I have two methods of a function `thermo!`
```julia
function thermo!(cell::FEMCell, mix::Mixture)
# do something with `cell`
return nothing # note, I don't need to collect return value
end
thermo!(problem::Problem) =
foreach(cell -> thermo!(cell, problem.mixture), getcells(problem))
```
The second method _item-independently_ applies the first to a `Vector{FEMCell}`. I want a parallel version of `thermo!(problem::Problem)` using threads. (As my laptop has 2 physical cores.)
My synchronization pattern is
1. Run using threads `thermo!(problem::Problem)`;
2. Wait until parallel `thermo!(problem::Problem)` ends;
3. Go further…
I found `Threads.@threads` macro and use it as a solution
```julia
function thermo!(problem::ExplicitDarcy)
Threads.@threads for cell in getcells(problem)
thermo!(cell, problem.mixture)
end
return nothing
end
```
But,
_ **Is there a more elegant solution?** _ (As I have more similar situations in my program.)
Something like
```julia
thermo!(problem::Problem) =
Threads.@threaded_foreach foreach(cell -> thermo!(cell, problem.mixture), getcells(problem))
```
* * *
> **UPD**
> I’m accidently missed `Base.Threads.foreach`. If it’s the solution, how to use `Channel` in my situation?
---
### Author:  [@jling](https://discourse.julialang.org/u/jling)
#### Post date: [September 1, 2021, 11:41am UTC](https://discourse.julialang.org/t/elegant-threaded-foreach/67489/2 "2021-09-01T11:41:06Z")
> [@stepanzh](#):
>
> Is there a more elegant solution?
```julia
using ThreadsX
ThreadsX.foreach
```
---
### Author:  [@stepanzh](https://discourse.julialang.org/u/stepanzh)
#### Post date: [September 1, 2021, 2:35pm UTC](https://discourse.julialang.org/t/elegant-threaded-foreach/67489/3 "2021-09-01T14:35:45Z")
Thank you, @jling. The package `ThreadsX` seems deeper than `Base.Threads`, but in my project I want to avoid third-party tools.
* * *
As a solution, I defined
```julia
tforeach(f, c) = (Threads.@threads for x in c; f(x); end; return nothing)
```
Which I found handy as the only I need is to replace `foreach` with `tforeach` in my source file.