Standard library#

Start with imports , then learn how to obtain external services . Errors and limits apply across the library.

Start a command-line program to use those services in an application.

Work with data#

• Text and collections
• Building values
• Numbers and mathematics
• Data formats : JSON, YAML, TOML, CSV, URLs, and HTML
• Compression and archives

Read, write, and connect#

• Files and paths , followed by byte streams
• Commands and processes
• Time and system information
• Cryptography and randomness
• Sockets and TLS , then HTTP and WebSockets
• Logging

Continue with concurrent work when operations need to run together. Use the API reference to look up exact declarations and special call rules for additional compiler checks.