Jekyll site.categories.{{variable}}?

Question

I want to make an archive page with the example generator from the Jekyll documentation. The generator works fine but I don\'t know to implement the layout correctly. I am using

Answer 1

The correct syntax for the loop is

{% for post in site.categories[cat] %}

Answer 2

I figured it out myself!

The line
{% for post in site.categories.cat %} can be written like:
{% for post in site.categories.[page.category] %}

It didn't know about the use of these brackets!