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We combine the power of AI mentorship with the trust of blockchain technology to create the ultimate learning environment.
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Get real-time help from our AI mentor, CheckMate, trained on thousands of smart contracts.
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Ask Your AI Mentor.
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How do I prevent re-entrancy attacks in my Solana program?
In Solana, re-entrancy is less common than in EVM because programs are stateless, but you should still follow the Checks-Effects-Interactions pattern.
pub fn withdraw(ctx: Context<Withdraw>, amount: u64) -> Result<()> {
// 1. Checks
require!(ctx.accounts.user.balance >= amount, ...);
// 2. Effects
ctx.accounts.user.balance -= amount;
// 3. Interactions
...
}Trusted by Builders
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