# Instances for type

**URL:** <https://discourse.julialang.org/t/instances-for-type/80549>\
**Category:** New to Julia\
**Tags:** question, struct, base\
**Created:** [May 5, 2022, 2:47pm UTC](https://discourse.julialang.org/t/instances-for-type/80549 "2022-05-05T14:47:26Z")\
**Posts on this page:** 1\
**Showing post:** 5

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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:** [May 5, 2022, 5:01pm UTC](https://discourse.julialang.org/t/instances-for-type/80549/5 "2022-05-05T17:01:48Z")

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When you get an error message, you must show all the code you ran to get that error.

Since the error message mentions `Vector`, clearly you did something _after_ `import Base: !` that triggered the error. That is the important part to show.

This is a useful post to consult when asking questions:

> [@Please read: make it easier to help you](https://discourse.julialang.org/t/please-read-make-it-easier-to-help-you/14757):
>
> Welcome to the Julia Discourse! We are enthusiastic about helping Julia programmers, both beginner and experienced. This public service announcement (PSA) outlines best practices when asking for help. Following these points makes it easier for us to help you and more likely you’ll get a prompt, useful answer. Keywords are highlighted to make it easier to refer to specific points. Choose a descriptive title that captures the key part of your question, eg “plots with multiple axes” instead of …

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