1. Introduction
  2. File System
    1. Read file line by line
    2. Mmap file
    3. Find Files modified in the last 24 hours
  4. Cryptography
    1. Calculate SHA-256 digest of a file
    2. Salt and hash a password with PBKDF2
  6. Date and Time
    1. Measure the elapsed time between two code sections
  8. Network
    1. Listen on unused port TCP/IP
    2. TCP Client
    3. UDP Echo
  10. Web Programming
    1. HTTP Get
    2. HTTP Post
  12. Algorithms
    1. Generate Random Values
  14. Concurrency
    1. Explicit Threads
    2. Shared Data
  16. Operating System
    1. Processor
    2. External Command
  18. Development Tools
    1. Versioning
  20. Encoding
    1. Deserialize JSON
    2. Encode and decode base64
  22. Mathematics
    1. Complex Numbers
  24. Data Structures
    1. Bitfield
    2. Singly Linked List
    3. Doubly Linked List
  26. Command line
    1. Argument Parsing
    2. ANSI Terminal
  28. Database
    1. SQLite
    2. Postgres
    3. MySQL
  30. Text Processing
    1. Regex Expressions
    2. String Parsing