# Arrays in logstash

**URL:** <https://discuss.elastic.co/t/arrays-in-logstash/44180>\
**Category:** Logstash\
**Created:** [March 11, 2016, 4:09pm UTC](https://discuss.elastic.co/t/arrays-in-logstash/44180 "2016-03-11T16:09:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![James\_Hamilton](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/james_hamilton/32/8432_2.png) [@James\_Hamilton](https://discuss.elastic.co/u/James_Hamilton)\
**Post date:** [March 11, 2016, 4:09pm UTC](https://discuss.elastic.co/t/arrays-in-logstash/44180/1 "2016-03-11T16:09:21Z")

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Hi,

How do I use arrays in conditionals in logstash?

I want to do the following:

```
if array[1] is not empty {
     mutate { .... }
}

```

Where array is created by using mutate split.

Thanks,

James

---

<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [March 15, 2016, 8:22pm UTC](https://discuss.elastic.co/t/arrays-in-logstash/44180/2 "2016-03-15T20:22:23Z")

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Assuming it's an array of strings this should work:

```auto
if [array][1] != "" {

```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 5:06am UTC](https://discuss.elastic.co/t/arrays-in-logstash/44180/3 "2017-07-06T05:06:51Z")

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