Racket

When exploring racket, it's essential to consider various aspects and implications. Racket allows programmers to add new syntactic constructs in the same way that other languages permit the formulation of procedures, methods, or classes. All you need to do is formulate a simple rule that rewrites a custom syntax to a Racket expression or definition. Racket Documentation. Running raco docs (or Racket Documentation on Windows or Mac OS) may open a different page with local and user-specific documentation, including documentation for installed packages. Chapter 2 provides a brief introduction to Racket. From Chapter 3 on, this guide dives into details— covering much of the Racket toolbox, but leaving precise details to The Racket Reference and other reference manuals.

Building on this, most likely, you’ll want to explore the Racket language using DrRacket, especially at the beginning. If you prefer, you can also work with the command-line racket interpreter (see Running racket and gracket) and your favorite text editor (see Command-Line Tools and Your Editor of Choice). The distribution includes pre-built, platform-independent bytecode; it installs much faster than plain source, and it is also compatible with fast installs of additional Racket packages. The Racket Reference. This manual defines the core Racket language and describes its most prominent libraries.

The companion manual The Racket Guide provides a friendlier (though less precise and less complete) overview of the language. The source of this manual is available on GitHub. Racket: All Versions.

Browse and download all versions of Racket, a versatile programming language, from this comprehensive archive. From another angle, quick: An Introduction to Racket with Pictures. For experienced programmers, to continue touring Racket from a systems-oriented perspective instead of pictures, your next stop is More: Systems Programming with Racket. To instead start learning about the full Racket language and tools in depth, move on to The Racket Guide. In this context, 4.7 Symbols - Racket.

Symbols in The Racket Guide introduces symbols. A symbol is like an immutable string, but symbols are normally interned, so that two symbols with the same character content are normally eq?. 3.12 Conditionals: if, cond, and, and or - Racket.

Combining Tests: and and or in The Racket Guide introduces or. If no expr s are provided, then result is #f. Equally important, if a single expr is provided, then it is in tail position, so the results of the or expression are the results of the expr. Otherwise, the first expr is evaluated.