The racket/format library provides functions for converting Racket values to strings. In addition to features like padding and numeric formatting, the functions have the virtue of being shorter than …

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) …

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.

Although Racket supports mutable strings, the String annotation recognizes only immutable strings, and Rhombus operations generate immutable strings. Some operations allow mutable strings as input, …

Reading Strings in The Racket Reference documents the fine points of the syntax of strings. The display procedure directly writes the characters of a string to the current output port (see Input and Output), …

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?.

Racket Cheat Sheet 🔗 ℹEssentials

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.

Given two strings returns the index of their longest common prefix from left to right. In other words, the first index position before the two strings start to diverge.

Reading Symbols in The Racket Reference documents the fine points of the syntax of symbols. The write function prints a symbol without a ' prefix. The display form of a symbol is the same as the …