Select item from collection

support
1

Is there a shorthand way to map over the items in a collection ?
Currently I have to use this:

{{ $translations := slice }}
{{ range $.Page.AllTranslations }}
    {{ $translations = $translations | append .Lang }}
{{ end }}

But am looking for something like this:

{{ $translations := $.Page.AllTranslations | select "Lang" }}

Note: select is no Hugo function, but maybe there is something equivalent to extract property values into a new collection.