# Count number of occurrence in a list with condition

**URL:** <https://swi-prolog.discourse.group/t/count-number-of-occurrence-in-a-list-with-condition/5646>\
**Category:** Help!\
**Tags:** how-to, list\
**Created:** [August 2, 2022, 4:54pm UTC](https://swi-prolog.discourse.group/t/count-number-of-occurrence-in-a-list-with-condition/5646 "2022-08-02T16:54:27Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![brebs](https://avatars.discourse-cdn.com/v4/letter/b/e9c0ed/32.png) [@brebs](https://swi-prolog.discourse.group/u/brebs)\
**Post date:** [August 2, 2022, 6:08pm UTC](https://swi-prolog.discourse.group/t/count-number-of-occurrence-in-a-list-with-condition/5646/2 "2022-08-02T18:08:32Z")

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Use [Sorting predicates in PROLOG - #19 by brebs](https://swi-prolog.discourse.group/t/sorting-predicates-in-prolog/5618/19) and adapt it to count.

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