# immutable_mirror_struct · Rell standard library · Chromia Docs (concept)

> hidden abstract type immutable_ mirror_ struct<T>: mirror_struct <T> Since 0.10.4 Methods to_mutable Convert this structure to a mutable version.

Source: https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/immutable_mirror_struct/

TYPE

# immutable\_mirror\_struct

```signature
hidden abstract type immutable_mirror_struct<T>: mirror_struct<T>
```

Since 0.10.4

## Methods

[to\_mutable](https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/immutable_mirror_struct/to_mutable/)
:   Convert this structure to a mutable version.

[View this page on docs.chromia.com](https://docs.chromia.com/pages/rell-stdlib/-rell%20-system%20-library/%5Broot%5D/immutable_mirror_struct/index.html)Generated API reference, mirrored from the live docs