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Introduction

• File System

  • Read file line by line
  • Mmap file
  • Find Files modified in the last 24 hours
  • Check file existence
  • Iterate directory

• 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

• Network

  • Listen on unused port TCP/IP
  • TCP Client
  • UDP Echo

• Web Programming

  • HTTP Get
  • HTTP Post
  • HTTP Server(std)

• Algorithms

  • Generate Random Values

• Concurrency

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

• Operating System

  • Processor
  • External Command

• Development Tools

  • Versioning

• Encoding

  • (De)serialize JSON
  • (De)serialize Zon
  • Encode and decode base64

• Mathematics

  • Complex Numbers

• Data Structures

  • Bitfield
  • Singly Linked List
  • Doubly Linked List

• Command line

  • Argument Parsing
  • ANSI Terminal

• Database

  • SQLite
  • Postgres
  • MySQL

• Text Processing

  • Regex Expressions
  • String Parsing