boxlang-language-fundamentals
BoxLang Language Fundamentals
Overview
BoxLang is a modern, dynamic JVM language (JRE 21+) influenced by Java, CFML, Python, Ruby, Go, and PHP. It compiles to Java bytecode and provides complete Java interoperability with a more expressive, concise syntax.
File Types
| Extension | Purpose |
|---|---|
.bx |
Class files (components, services, models) |
.bxs |
Script files (standalone scripts, CLIs) |
.bxm |
Markup/template files (HTML output, views) |
Variables and Scopes
BoxLang uses dynamic typing — types are inferred at runtime. Explicit type
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Use this skill when working with BoxLang lambdas, closures, arrow functions, higher-order functions, functional array/struct pipelines (map, filter, reduce, flatMap, groupBy, etc.), destructuring, or spread syntax.
13boxlang-classes-and-oop
Use this skill when writing BoxLang classes, components, interfaces, inheritance hierarchies, annotations, properties, constructors, or applying object-oriented design patterns in BoxLang.
12boxlang-best-practices
Use this skill when writing, reviewing, or improving BoxLang code to ensure it follows community best practices for naming, structure, scoping, error handling, performance, and maintainability.
12boxlang-code-reviewer
Use this skill when reviewing BoxLang code for quality, correctness, security vulnerabilities, performance issues, style violations, or when providing structured code review feedback following BoxLang best practices and security guidelines.
12boxlang-configuration
Use this skill when configuring BoxLang runtime settings via boxlang.json, setting environment variables for config overrides, configuring datasources, caches, executors, modules, logging, security, or schedulers — or when helping someone understand the BoxLang configuration system.
11boxlang-web-development
Use this skill when building BoxLang web applications: Application.bx lifecycle, request/response handling, sessions, forms, REST APIs, HTTP clients, routing, CSRF protection, Server-Sent Events, or configuring CommandBox/MiniServer.
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