> For the complete documentation index, see [llms.txt](https://lab.guardianaudits.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lab.guardianaudits.com/encyclopedia-of-common-solidity-bugs/forget-to-update-parallel-data-structures.md).

# Forget to Update Parallel Data Structures

{% embed url="<https://twitter.com/0xOwenThurm/status/1615391378107764738>" %}
Example of parallel data structures falling out of sync
{% endembed %}