# Optim constrained optimization issues

**URL:** <https://discourse.julialang.org/t/optim-constrained-optimization-issues/27333>\
**Category:** Optimization (Mathematical)\
**Tags:** question\
**Created:** [August 8, 2019, 9:15pm UTC](https://discourse.julialang.org/t/optim-constrained-optimization-issues/27333 "2019-08-08T21:15:34Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![miles.lubin](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/miles.lubin/32/279_2.png) [@miles.lubin](https://discourse.julialang.org/u/miles.lubin)\
**Post date:** [August 9, 2019, 2:51pm UTC](https://discourse.julialang.org/t/optim-constrained-optimization-issues/27333/6 "2019-08-09T14:51:35Z")

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This is a known issue (arguably an API design issue common in Julia) that I’ve ranted about: [Common error: providing an Integer when a Float is expected - #3 by miles.lubin](https://discourse.julialang.org/t/common-error-providing-an-integer-when-a-float-is-expected/17786/3).

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