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Native Rust · medium

17. Native Rust: Manual Account Iteration

Using next_account_info safely.

1 min read2 questionsup to 50 XPtopic 17/100

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In native Rust, accounts are passed as a slice (`&[AccountInfo]`). Developers iterate through accounts using `next_account_info(&mut accounts_iter)?`.

rust
use solana_program::account_info::next_account_info;

let accounts_iter = &mut accounts.iter();
let payer = next_account_info(accounts_iter)?;
let vault = next_account_info(accounts_iter)?;

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Check your understanding

  1. 1. What function retrieves the next account from an account iterator in native Rust?

  2. 2. What error is returned if next_account_info is called on an empty iterator?

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