# Efficiency of abstract types vs \`Any\`

**URL:** <https://discourse.julialang.org/t/efficiency-of-abstract-types-vs-any/129518>\
**Category:** General Usage\
**Tags:** question\
**Created:** [June 1, 2025, 8:50am UTC](https://discourse.julialang.org/t/efficiency-of-abstract-types-vs-any/129518 "2025-06-01T08:50:15Z")\
**Posts on this page:** 1\
**Showing post:** 12

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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 2, 2025, 4:53pm UTC](https://discourse.julialang.org/t/efficiency-of-abstract-types-vs-any/129518/12 "2025-06-02T16:53:20Z")

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8 posts were split to a new topic: [Could introducing formal interfaces be nonbreaking?](https://discourse.julialang.org/t/could-introducing-formal-interfaces-be-nonbreaking/129567)

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_[View the full topic](https://discourse.julialang.org/t/efficiency-of-abstract-types-vs-any/129518)._