# Implementing singletons for configuration variables

**URL:** <https://discourse.julialang.org/t/implementing-singletons-for-configuration-variables/62177>\
**Category:** General Usage\
**Tags:** question\
**Created:** [June 1, 2021, 8:41am UTC](https://discourse.julialang.org/t/implementing-singletons-for-configuration-variables/62177 "2021-06-01T08:41:39Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![sapo](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@sapo](https://discourse.julialang.org/u/sapo)\
**Post date:** [July 12, 2021, 8:39am UTC](https://discourse.julialang.org/t/implementing-singletons-for-configuration-variables/62177/8 "2021-07-12T08:39:39Z")

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Actually, probably the best way is by using functions: [Revise and const values changed during a session? - #3 by sapo](https://discourse.julialang.org/t/revise-and-const-values-changed-during-a-session/64372/3)

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