How to create a map

[KammutierSpule]

I am new to GoHugo

I have the following code:

{{ range .Data.Pages }}
{{ with .Params.category }}<button type="button" data-filter="{{ . }}">{{ end }}{{ .Params.category }}</button>
{{ end }}

but it will create for each category a button even if the category is already present
I would like to make a map ? with just the list of the filtered ( map ) category
how can I do it with hugo?

[KammutierSpule]

This worked for me:

Remove duplicates from Array?

Hi there. Try something like this. You can tweak it to your needs. {{ $categories := slice }} {{ range .Pages }} {{ $categories = $categories | append .Params.metatags }} {{ end }} {{ $categories }} <!-- not unique --> {{ $categories | uniq }} <!-- unique --> Which will output: [Project Network Infrastructure todo organisation Infrastructure] [Project Network Infrastructure todo organisation]