README.md

Day 8: Rust function-like procedural Macros

Day 8 of RareSkills Solana Course.

Setup

1. Configure Solana to run on localhost: solana config set --url localhost
2. Run the test validator node on another terminal: solana-test-validator
3. Run Solana logs on another terminal: solana logs
4. Build Anchor program: anchor build
5. Sync program_id with Anchor key: anchor keys sync
6. Run tests: anchor test --skip-local-validator

Notes

• Rust functions cannot accept an arbitrary number of arguments.
• Rust function-like macros are identified by the presence of a ! symbol.
  • examples are:
    • println!()
    • msg!()
• A Rust macro takes Rust code as input and programatically expands it into more Rust code.

References

• Rust std::io::stdout
• Macro solana_program::msg
• Macro std::println