Learn CRYSTAL with Real Code Examples

LLVM-based compiler generates native binaries

Static type checking at compile-time

Standard library written in Crystal

Supports fibers for cooperative concurrency

Compile-time macros expand code before runtime

Source code compiled to native binary

Static type checking at compile-time

Macros expanded before compilation

Execution via compiled machine code

Fibers provide lightweight concurrency

MVC for web frameworks

Fiber-based concurrency pipelines

CLI tool modular design

Macro-driven code generation

Microservice-oriented structure

Web backends

CLI utilities

Microservices

Data processing pipelines

High-performance APIs

Readable, Ruby-inspired syntax

Static typing with inference

Compiled to native binaries for speed

Concurrency via fibers

Macro-based compile-time metaprogramming

Use fibers for concurrent tasks

Split code into modules

Compile to optimized binaries

Use Shards for dependency management

Profile and optimize hot paths

Migrate Ruby scripts to Crystal for performance

Replace dynamic typing with static types

Port web apps to Kemal/Amber

Refactor blocking IO to fibers

Adjust gems to Shards libraries