# Alloy Authors - Practical Alloy - Signature facts (Highlights) ![rw-book-cover|256](https://readwise-assets.s3.amazonaws.com/static/images/article4.6bc1851654a0.png) ## Metadata **Review**:: [readwise.io](https://readwise.io/bookreview/51290441) **Source**:: #from/readwise #from/reader **Zettel**:: #zettel/fleeting **Status**:: #x **Authors**:: [[Alloy Authors]] **Full Title**:: Practical Alloy - Signature facts **Category**:: #articles #readwise/articles **Category Icon**:: 📰 **URL**:: [practicalalloy.github.io](https://practicalalloy.github.io/chapters/structural-topics/topics/signature-facts/index.html) **Host**:: [[practicalalloy.github.io]] **Highlighted**:: [[2025-05-10]] **Created**:: [[2025-05-14]] ## Highlights - The variable implicitly quantified is always called `this`, and you can call it within signature facts if needed. ([View Highlight](https://read.readwise.io/read/01jtx4vydm8absgtadaqse2y8n)) ^887867997