# Can a BigInt be a type parameter?

**URL:** <https://discourse.julialang.org/t/can-a-bigint-be-a-type-parameter/42997>\
**Category:** General Usage\
**Created:** [July 13, 2020, 7:26pm UTC](https://discourse.julialang.org/t/can-a-bigint-be-a-type-parameter/42997 "2020-07-13T19:26:51Z")\
**Posts on this page:** 1\
**Showing post:** 6

<div class="post-metadata">

**Author:** ![johnmyleswhite](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/johnmyleswhite/32/31_2.png) [@johnmyleswhite](https://discourse.julialang.org/u/johnmyleswhite)\
**Post date:** [July 13, 2020, 7:39pm UTC](https://discourse.julialang.org/t/can-a-bigint-be-a-type-parameter/42997/6 "2020-07-13T19:39:29Z")

</div>

I don’t think this is true. The manual [says](https://docs.julialang.org/en/v1/manual/types/#man-types-1):

> Both abstract and concrete types can be parameterized by other types. They can also be parameterized by symbols, by values of any type for which [`isbits`](https://docs.julialang.org/en/v1/base/base/#Base.isbits) returns true (essentially, things like numbers and bools that are stored like C types or `struct` s with no pointers to other objects), and also by tuples thereof. Type parameters may be omitted when they do not need to be referenced or restricted.

---

_[View the full topic](https://discourse.julialang.org/t/can-a-bigint-be-a-type-parameter/42997)._