# Discussion: How much to pipeline

**URL:** <https://discourse.elm-lang.org/t/discussion-how-much-to-pipeline/6305>\
**Category:** Request Feedback\
**Created:** [September 25, 2020, 3:55pm UTC](https://discourse.elm-lang.org/t/discussion-how-much-to-pipeline/6305 "2020-09-25T15:55:01Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![lydell](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.elm-lang.org/lydell/32/178_2.png) [@lydell](https://discourse.elm-lang.org/u/lydell)\
**Post date:** [October 4, 2020, 5:39pm UTC](https://discourse.elm-lang.org/t/discussion-how-much-to-pipeline/6305/12 "2020-10-04T17:39:18Z")

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@rupert Off topic question – do you miss `|.` and `|=` in your parsing example? Since you can’t define your own operators I see you use `|> PR.ignore` and `|> PR.keep` instead. (See [Chat about elm/parser operators |. and |=](https://discourse.elm-lang.org/t/chat-about-elm-parser-operators-and/5848) for my previous topic about this.)

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