--- title: collections.Intersect description: Returns the common elements of two arrays or slices, in the same order as the first array. categories: [] keywords: [] action: aliases: [intersect] related: - functions/collections/Complement - functions/collections/SymDiff - functions/collections/Union returnType: any signatures: [collections.Intersect SET1 SET2] aliases: [/functions/intersect] --- A useful example is to use it as `AND` filters when combined with where: ```go-html-template {{ $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](/functions/collections/union) for `OR`. [partials]: /templates/partials/ [single]: /templates/single-page-templates/