# Why I can't set what parameters are mutable explicitly?

**URL:** <https://discourse.julialang.org/t/why-i-cant-set-what-parameters-are-mutable-explicitly/86091>\
**Category:** Offtopic\
**Tags:** functions\
**Created:** [August 21, 2022, 3:50pm UTC](https://discourse.julialang.org/t/why-i-cant-set-what-parameters-are-mutable-explicitly/86091 "2022-08-21T15:50:10Z")\
**Posts on this page:** 1\
**Showing post:** 167

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**Author:** ![DNF](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dnf/32/10191_2.png) [@DNF](https://discourse.julialang.org/u/DNF)\
**Post date:** [August 23, 2022, 12:19pm UTC](https://discourse.julialang.org/t/why-i-cant-set-what-parameters-are-mutable-explicitly/86091/167 "2022-08-23T12:19:20Z")

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I don’t have the time to keep hammering this point in. Perhaps this StackOverflow answer by Stefan Karpinski (one of the Julia language creators) [types - Is Julia dynamically typed? - Stack Overflow](https://stackoverflow.com/questions/28078089/is-julia-dynamically-typed/28096079#28096079) can clarify some concepts.

It contains this sentence which may pique your interest:

> Julia is squarely in the dynamic camp: types are a property of values not expressions.

There is also this previous discussion thread: [Explicit denotation of variability and immutability](https://discourse.julialang.org/t/explicit-denotation-of-variability-and-immutability/8686) (perhaps this post is of particular interest: [Explicit denotation of variability and immutability - #16 by StefanKarpinski](https://discourse.julialang.org/t/explicit-denotation-of-variability-and-immutability/8686/16))

Good luck.

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