Railroad diagrams (also known as syntax diagrams) provide a visual representation of the grammar rules in programming languages. They offer an intuitive way to understand syntax structures compared to traditional BNF notation.
This collection aims to compile comprehensive railroad diagrams for various programming languages to serve as a quick reference for developers. Each language page contains detailed syntax visualizations to help you understand the language structure at a glance.
Our collection currently includes the following programming languages. Click on any language to view its railroad diagrams:
Ruby is a dynamic, object-oriented programming language known for its elegant syntax and focus on simplicity and productivity.
View Ruby DiagramsPHP is a widely-used open source general-purpose scripting language especially suited for web development.
View PHP DiagramsPerl is a family of programming languages known for its text processing capabilities, especially useful for system administration tasks.
View Perl DiagramsRailroad diagrams represent language syntax as paths that can be followed from left to right. They show:
These visual representations make it easier to understand complex syntax rules and valid code structures at a glance.