• 📝 String Operations

  • String manipulation and transformations
  • Case conversion and formatting
  • Pattern matching and validation
  • Unicode support
  • String comparison and searching
  • Text encoding/decoding

• 📂 File System Operations

  • File and directory manipulation
  • Path operations
  • File searching and filtering

• 📦 Archive Operations

  • ZIP file compression and decompression
  • TAR file creation and extraction
  • Pattern-based file filtering
  • Recursive directory handling

• 🔐 Cryptography

  • SHA3 implementation
  • SHA2 family (SHA-256, SHA-512, SHA-512/256)
  • AES-256 encryption
    • CBC and CTR modes
    • High-level interface with automatic Base64 encoding
    • Low-level interface with raw binary operations
    • Configurable padding modes (PKCS7 or None)
  • Secure hashing
  • Encryption utilities
  • Base64 encoding/decoding
  • Legacy support (MD5, SHA1, Blowfish)

• 🌐 Network Operations

  • HTTP client
  • Request handling
  • Response parsing

• 📊 Math Operations

  • 📈 Statistical Analysis
    • Basic statistics (mean, median, mode, range)
    • Variance and standard deviation (population and sample)
    • Distribution measures (skewness, kurtosis)
    • Correlation (Pearson, Spearman)
    • Advanced means (geometric, harmonic, trimmed)
    • Robust statistics (MAD, Huber M-estimator)
    • Hypothesis testing (t-test, Mann-Whitney U)
    • Effect size measures (Cohen's d, Hedges' g)
    • Bootstrap confidence intervals
  • 💰 Financial Mathematics
    • Time value of money (PV, FV)
    • Investment analysis (NPV, IRR)
    • Depreciation calculations
    • Return metrics (ROI, ROE)
  • 🔢 Matrix Operations
    • Basic operations (add, subtract, multiply)
    • Matrix creation (zeros, ones, identity)
    • Matrix transpose
    • Determinant and trace calculation
    • Coming Soon:
      • Matrix decompositions (LU, QR)
      • Matrix inversion
      • Matrix rank calculation
  • 📐 Trigonometry
    • Basic functions (sin, cos, tan, sec, csc, cot)
    • Inverse functions (arcsin, arccos, arctan, arctan2)
    • Hyperbolic functions (sinh, cosh, tanh)
    • Inverse hyperbolic functions (arcsinh, arccosh, arctanh)
    • Angle conversions (degrees, radians, grads)
    • Angle normalization
    • Triangle calculations (area, perimeter, radii)
    • Circle sector and segment calculations
    • Vector operations
  • ✅ All calculations use Double precision (64-bit) for accuracy

• 🔄 JSON Operations

  • Interface-based JSON manipulation with automatic memory management
  • Property order preservation in JSON objects
  • Full Unicode support
    • Unicode escape sequence parsing (\uXXXX)
    • UTF-8/16 character handling
    • Control character escaping (\n, \r, \t, etc.)
  • Comprehensive error handling with detailed messages
  • Factory methods for easy value creation
  • Support for all JSON data types
    • Objects with ordered properties
    • Arrays with type-safe elements
    • Strings with proper escaping
    • Numbers (both integer and floating-point)
    • Booleans (true/false)
    • Null (singleton implementation)
  • Output formatting
    • Pretty printing with configurable indentation
    • Compact output for storage/transmission
  • Memory safety
    • Automatic reference counting through interfaces
    • Safe singleton management for null values
    • Proper cleanup of nested structures
  • Thoroughly tested with 17 comprehensive test cases

I'm sharing my latest work-in-progress Free Pascal library on GitHub - https://github.com/ikelaiah/tidykit-fp

Hope you find it useful. Not production ready yet.

-ikel