title: How to check for the existence of an element in a Liquid array (Shopify) without using join
body: <p>I want to check for array values in an array created from a "split". Is there a way to do it without doing the following:</p>
  
  <pre><code>{%- assign blog_tags_string = blogs.news.all_tags | join ' ' -%}
  
  {%- if blog_tags_string contains blog_title -%}
      {%- assign is_tag_page = true -%}
  {%- else -%}
      {%- assign is_tag_page = false -%}
  {%- endif -%}
  </code></pre>