# Negation of boolean array

**URL:** <https://discourse.julialang.org/t/negation-of-boolean-array/16159>\
**Category:** General Usage\
**Created:** [October 11, 2018, 7:57am UTC](https://discourse.julialang.org/t/negation-of-boolean-array/16159 "2018-10-11T07:57:06Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![kdyrhage](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kdyrhage/32/2326_2.png) [@kdyrhage](https://discourse.julialang.org/u/kdyrhage)\
**Post date:** [October 11, 2018, 8:01am UTC](https://discourse.julialang.org/t/negation-of-boolean-array/16159/2 "2018-10-11T08:01:31Z")

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`!` is an operator, so the dot goes before it:

```julia
.!a

```

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_[View the full topic](https://discourse.julialang.org/t/negation-of-boolean-array/16159)._