collections.Intersect

Returns a slice containing the common elements found in two given slices, in the same order as the first slice.

Syntax: collections.Intersect SLICE1 SLICE2
Returns: []any
Alias: intersect

A useful example is to use it as AND filters when combined with where:

{{ $pages := where site.RegularPages "Type" "not in" (slice "page" "about") }}
{{ $pages := $pages | union (where site.RegularPages "Params.pinned" true) }}
{{ $pages := $pages | intersect (where site.RegularPages "Params.images" "!=" nil) }}

The above fetches regular pages not of page or about type unless they are pinned. And finally, we exclude all pages with no images set in Page parameters.

See union for OR.

Last updated: November 8, 2026 : content: Remove categories from front matter (1cc1dd83a)

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