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            "value": "\n          <p>I've written a number of emails about feature flags, or feature toggles, and am a strong advocate of using them whilst developing new features.<\/p>\n\n<p>I've used them a couple of times recently on my website so I wanted to share them as examples.<\/p>\n\n<h2 id=\"experimenting-with-presentation-layouts\">Experimenting with presentation layouts<\/h2>\n\n<p>Firstly, I wanted to experiment with a different layout for my presentation pages.<\/p>\n\n<p>They currently have a list of events, embedded slides and a video recording when there is one.<\/p>\n\n<p>Each event linked to its website, where applicable, and the slides and video were from one of the most recent versions of the presentation.<\/p>\n\n<p>I wanted to change this so each event would have links to its own slides, example code or demo.<\/p>\n\n<p>I didn't want to change this yet for all presentations, only <a href=\"https:\/\/www.oliverdavies.uk\/presentations\/sculpin\">my Sculpin talk<\/a> as it's the most recent and, if I like it, later apply it to the others.<\/p>\n\n<p>My website is built with Sculpin, so adding a feature flag was as simple as adding <code>new: true<\/code> to the YAML front matter at the top of the file for that presentation.<\/p>\n\n<p>This is available as <code>page.new<\/code> in the layout file and I can use this <a href=\"https:\/\/code.oliverdavies.uk\/opdavies\/oliverdavies.uk\/commit\/8b721e63fb64f3c98b81353ca9cec7545d72a595\">to load different markup<\/a>.<\/p>\n\n<h2 id=\"rewriting-my-css\">Rewriting my CSS<\/h2>\n\n<p>Secondly, I've been wanting to re-style my website with Tailwind CSS 4 and refactor some of the templating.<\/p>\n\n<p>As this is a change I wanted to be site-wide, I added <code>new_css: true<\/code> to my sculpin_site.yml file.<\/p>\n\n<p>This time, I was able to use <code>site.new_css<\/code> to <a href=\"https:\/\/code.oliverdavies.uk\/opdavies\/oliverdavies.uk\/commit\/fa884644cf5aa233ad22fb28b83c5a0b150b037d\">toggle the loaded stylesheet<\/a> and using Sculpin's environment files - e.g. sculpin_site_dev.yml and sculpin_site_prod.yml - I can be explicit about which stylesheets are used locally and for my live website.<\/p>\n\n<h2 id=\"summary\">Summary<\/h2>\n\n<p>Feature flags are a great approach to splitting up large changes into manageable, deployable pieces, and they don't need to be complicated.<\/p>\n\n<p>Essentially, they are a simple boolean value that you can use to execute different code based on whether it's false or true.<\/p>\n\n        ",
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