Introduction

• File System

  • Read file line by line
  • Mmap file
  • Check file existence
  • Recursively find recent files
  • Build portable paths
  • Create and manage files
  • Watch files with platform APIs
  • Temporary files and atomic writes
  • Create a TAR archive

• Cryptography

  • Calculate SHA-256 digest of a file
  • Salt and hash a password with PBKDF2
  • Salt and hash a password with Argon2

• Date and Time

  • Measure the elapsed time between two code sections
  • Unix Timestamp and Date Calculation

• Networking and Web

  • Listen on unused port TCP/IP
  • TCP Client
  • UDP Echo
  • Resolve a host name
  • Frame messages on a TCP stream
  • Bound a network receive with a timeout
  • Retry HTTP failures and reuse connections
  • HTTP Get
  • HTTP Post
  • HTTP Server(std)

• Algorithms and Data Structures

  • Generate Random Values
  • Dynamic Array (ArrayList)
  • Hash Map (HashMap)
  • Arena Memory Allocator (ArenaAllocator)
  • Bitfield
  • Singly Linked List
  • Doubly Linked List
  • Complex Numbers

• Concurrency

  • Explicit Threads
  • Shared Data
  • Thread pool
  • Run Once

• Systems and Tools

  • Processor
  • External Command
  • Environment Variables
  • Signal Handling and Graceful Shutdown
  • Versioning
  • Argument Parsing Without a Library
  • Argument Parsing with structargs
  • ANSI Terminal

• Encoding and Text Processing

  • (De)serialize JSON
  • (De)serialize Zon
  • Hexadecimal Encoding and Decoding
  • Encode and decode base64
  • Regex Expressions
  • String Parsing

• Database

  • SQLite
  • Postgres
  • MySQL

• Io

  • Pass the Io Context Through an Application
  • Read and Write Bytes with Io Interfaces
  • Build Dynamic Output with Io.Writer.Allocating
  • Use Io.Dir and Io.File Handles
  • Measure and Bound Work with Io Clock and Timeout
  • Get Secure Random Bytes through Io
  • Compose Io Tasks with Async, Groups, Select, and Cancel
  • Coordinate Io Work with Synchronization Primitives
  • Submit Low-Level Io Operations in a Batch
  • Use Io Process and Terminal Capabilities
  • Synchronize a File with Io MemoryMap
  • Resolve Hosts through Io Networking