# Obtaining a function's output type

**URL:** <https://discourse.julialang.org/t/obtaining-a-functions-output-type/11313>\
**Category:** General Usage\
**Tags:** question\
**Created:** [May 31, 2018, 10:51pm UTC](https://discourse.julialang.org/t/obtaining-a-functions-output-type/11313 "2018-05-31T22:51:18Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![mbauman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mbauman/32/31082_2.png) [@mbauman](https://discourse.julialang.org/u/mbauman)\
**Post date:** [June 1, 2018, 6:33pm UTC](https://discourse.julialang.org/t/obtaining-a-functions-output-type/11313/6 "2018-06-01T18:33:36Z")

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Hah, we have the same thread going on over in #dev: [Promote\_op and preallocating result of linear operators - #4 by mbauman](https://discourse.julialang.org/t/promote-op-and-preallocating-result-of-linear-operators/11332/4)

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_[View the full topic](https://discourse.julialang.org/t/obtaining-a-functions-output-type/11313)._