# Avoid splat (...) operator for keywords arguments?

**URL:** https://discourse.julialang.org/t/avoid-splat-operator-for-keywords-arguments/23725
**Category:** Data
**Tags:** question
**Created:** [May 1, 2019, 7:38am UTC](https://discourse.julialang.org/t/avoid-splat-operator-for-keywords-arguments/23725 "2019-05-01T07:38:27Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![Eric\_Chen](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/eric_chen/32/5992_2.png) [@Eric\_Chen](https://discourse.julialang.org/u/Eric_Chen)
#### Post date: [May 1, 2019, 7:38am UTC](https://discourse.julialang.org/t/avoid-splat-operator-for-keywords-arguments/23725/1 "2019-05-01T07:38:27Z")

</div>

from:

> **[The Fast Track to Julia](https://cheatsheet.juliadocs.org/)**

# Performance tips

- Avoid the splat ( `...` ) operator for keyword arguments.

However, from official Julia guide:

> **[Performance Tips · The Julia Language](https://docs.julialang.org/en/v1/manual/performance-tips/index.html)**
>
> Documentation for The Julia Language.

I dont find this \* Avoid the splat ( `...` ) operator for keyword arguments.

Question:

- Is the official manual’s Performance Tip missing this trick?
- May I know some example of such splat for keyword argument, and Why it is better to avoid them?

Thank you

---

<div class="post-metadata">

### Author: ![Gnimuc](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/gnimuc/32/2194_2.png) [@Gnimuc](https://discourse.julialang.org/u/Gnimuc)
#### Post date: [May 1, 2019, 8:36am UTC](https://discourse.julialang.org/t/avoid-splat-operator-for-keywords-arguments/23725/2 "2019-05-01T08:36:30Z")

</div>

X-ref: [Splatting arguments causes ~30x slow down](https://discourse.julialang.org/t/splatting-arguments-causes-30x-slow-down/16964)