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Visual Scala Reference

An awesome guide to the most common Scala collection functions


What this guide is intended for

This guide is intended to help newcomers (but not only them) who are learning the Scala collection system (or functional programming in general) by compiling an exhaustive list of Scala's most common visual and conceptual functions.

As an example of what you'll find, below are depicted three of the most well known Scala collection functions:

map filter foldLeft

Development and build

You need Docker installed on your computer. Run docker-compose up -d and then browse http://localhost:8080.

The rendered files will be placed in the docs directory.


English is the default language for this guide. If you want to translate it to another language please send me a pull request.

The translatable files are stored in the data subdirectories.