# Painless Lambda expressions

**URL:** <https://discuss.elastic.co/t/painless-lambda-expressions/130339>\
**Category:** Elasticsearch\
**Created:** [May 2, 2018, 11:46pm UTC](https://discuss.elastic.co/t/painless-lambda-expressions/130339 "2018-05-02T23:46:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Fullar\_Senjit](https://avatars.discourse-cdn.com/v4/letter/f/b3f665/32.png) [@Fullar\_Senjit](https://discuss.elastic.co/u/Fullar_Senjit)\
**Post date:** [May 2, 2018, 11:46pm UTC](https://discuss.elastic.co/t/painless-lambda-expressions/130339/1 "2018-05-02T23:46:13Z")

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I am trying to find some examples/documentation on how to use lambda expressions in painless. Any help ?

thanks

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**Author:** ![shanec](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/shanec/32/4004_2.png) [@shanec](https://discuss.elastic.co/u/shanec)\
**Post date:** [May 2, 2018, 11:47pm UTC](https://discuss.elastic.co/t/painless-lambda-expressions/130339/2 "2018-05-02T23:47:22Z")

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Have you seen [https://www.elastic.co/guide/en/elasticsearch/painless/current/painless-syntax.html#lambda-expressions](https://www.elastic.co/guide/en/elasticsearch/painless/current/painless-syntax.html#lambda-expressions)?

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**Author:** ![Fullar\_Senjit](https://avatars.discourse-cdn.com/v4/letter/f/b3f665/32.png) [@Fullar\_Senjit](https://discuss.elastic.co/u/Fullar_Senjit)\
**Post date:** [May 3, 2018, 12:00am UTC](https://discuss.elastic.co/t/painless-lambda-expressions/130339/3 "2018-05-03T00:00:01Z")

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yes, i did. I am new to painless as well. So looking for some more examples.  
looking to define-and-call a lambda function

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**Author:** ![Fullar\_Senjit](https://avatars.discourse-cdn.com/v4/letter/f/b3f665/32.png) [@Fullar\_Senjit](https://discuss.elastic.co/u/Fullar_Senjit)\
**Post date:** [May 4, 2018, 4:34pm UTC](https://discuss.elastic.co/t/painless-lambda-expressions/130339/5 "2018-05-04T16:34:57Z")

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this article explains the same --\> [How to use lambda expression in Painless?](https://discuss.elastic.co/t/how-to-use-lambda-expression-in-painless/103758)

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 1, 2018, 4:34pm UTC](https://discuss.elastic.co/t/painless-lambda-expressions/130339/6 "2018-06-01T16:34:57Z")

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