Result

A Rust-like Result type implementation in C++.

Example Usage

#include <result.h>

Result<int, std::string> divide(int a, int b) {
    if (b == 0) {
        return Err("Division by zero");
    }
    return Ok(a / b);
}

int main() {
    auto result = divide(10, 2);
    
    if (result.is_ok()) {
        std::cout << "Result: " << result.unwrap() << std::endl;
    } else {
        std::cout << "Error: " << result.unwrap_err() << std::endl;
    }
    
    return 0;
}

Building

Using Nix (Recommended)

1. Install Nix:

   # Remove any existing Nix installation
   sudo rm -rf /nix
   
   # Install Nix using the official installer
   sh <(curl -L https://nixos.org/nix/install) --daemon

2. Enable Nix experimental features:

   mkdir -p ~/.config/nix
   echo "experimental-features = nix-command flakes" >> ~/.config/nix/nix.conf

3. Enter the Nix Shell:

   nix develop

   Optionally add --allow-dirty

Using Meson

1. Build the project:

   # Configure debug build
   meson setup build --buildtype=debug
   # Configure release build
   meson setup build --buildtype=release
   
   # Build the project
   meson compile -C build
   
   # Run all tests
   meson test -C build

2. Run specific examples:

   # All binaries are in the build/ directory
   ./build/arithmetic
   ./build/error_handling
   ./build/optional
   ./build/result_chain

All build artifacts, including binaries and intermediate files, are kept in the build/ directory. This includes:

• Compiled binaries
• Build configuration files
• Test results
• Meson's internal state

License

MIT License - see LICENSE file for details