# Deprecated '\>\>'

**URL:** <https://discuss.ocaml.org/t/deprecated/3274>\
**Category:** Learning\
**Created:** [February 3, 2019, 12:20pm UTC](https://discuss.ocaml.org/t/deprecated/3274 "2019-02-03T12:20:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![njb](https://avatars.discourse-cdn.com/v4/letter/n/ecb155/32.png) [@njb](https://discuss.ocaml.org/u/njb)\
**Post date:** [February 3, 2019, 12:20pm UTC](https://discuss.ocaml.org/t/deprecated/3274/1 "2019-02-03T12:20:03Z")

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Just reading through someone else’s code from a while back - have come across ‘\>\>’ and I can’t figure out if this is a monad or something deprecated in ocaml. Can anyone point me to a description? Thanks.

eg:

Lwt\_io.flush w \>\>  
return …

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**Author:** ![cloudyhug](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/cloudyhug/32/2399_2.png) [@cloudyhug](https://discuss.ocaml.org/u/cloudyhug)\
**Post date:** [February 3, 2019, 1:34pm UTC](https://discuss.ocaml.org/t/deprecated/3274/2 "2019-02-03T13:34:03Z")

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I’ve seen this operator in the Lwt API in the documentation of Ocsigen : [https://ocsigen.org/lwt/3.1.0/api/Ppx\_lwt](https://ocsigen.org/lwt/3.1.0/api/Ppx_lwt)

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**Author:** ![njb](https://avatars.discourse-cdn.com/v4/letter/n/ecb155/32.png) [@njb](https://discuss.ocaml.org/u/njb)\
**Post date:** [February 3, 2019, 1:49pm UTC](https://discuss.ocaml.org/t/deprecated/3274/3 "2019-02-03T13:49:27Z")

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Excellent, thanks - found the reason in [https://github.com/ocsigen/lwt/issues/495](https://github.com/ocsigen/lwt/issues/495) 👍