Rust + Solana Increment & Reset - Solana-rust Typing CST Test

Rust + Solana Increment & Reset — Solana-rust Code

Solana program in Rust to increment and reset a counter stored in account data.

use borsh::{BorshDeserialize, BorshSerialize};
use solana_program::{account_info::AccountInfo, entrypoint, entrypoint::ProgramResult, msg, pubkey::Pubkey};

#[derive(BorshSerialize, BorshDeserialize, Debug)]
pub struct Counter {
	pub value: u64
}

entrypoint!(process_instruction);
fn process_instruction(_program_id: &Pubkey, _accounts: &[AccountInfo], instruction_data: &[u8]) -> ProgramResult {
	let mut counter = Counter { value: 0 }
	match instruction_data[0] {
		0 => counter.value += 1
		1 => counter.value = 0
		_ => msg!("Unknown instruction")
	}
	msg!("Counter value: {}", counter.value)
	Ok(())
}

Solana-rust Language Guide

Solana Rust is the primary language used to write smart contracts (called programs) on the Solana blockchain. It leverages Rust’s safety and performance features to build high-throughput, low-latency decentralized applications.

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