Iterate through Remaining Accounts
Remaining Accounts
Interate
Accounts
Remaining
Iterate Through remaining accounts in context using Anchor.
use anchor_lang::prelude::*;
#[derive(Accounts)]
pub struct IterateRemainingAccounts<'info> {
#[account(mut)]
pub authority: Signer<'info>,
pub system_program: Program<'info, System>,
}
pub fn handler(ctx: Context<IterateRemainingAccounts>) -> Result<()> {
let authority = &ctx.accounts.authority;
for account in ctx.remaining_accounts.iter() {
// Do something with the account
// Fields available:
// account.data
// account.lamports
// account.owner
// account.executable
// account.rent_epoch
// account.key
// account.is_signer
// account.is_writable
}
Ok(())
}
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The given Solana code snippet demonstrates how to iterate through the remaining accounts in the context using the Anchor framework.
Explanation:
- The code defines a struct called
IterateRemainingAccountsusing the#[derive(Accounts)]attribute. This struct represents the accounts required for the handler function. - The
IterateRemainingAccountsstruct has two fields:authority: This field represents the authority account and is annotated with#[account(mut)]to indicate that it can be mutated.system_program: This field represents the system program account and is of typeProgram<'info, System>.
- The
handlerfunction is the entry point for the program and takes aContext<IterateRemainingAccounts>as an argument. - Inside the
handlerfunction, theauthorityaccount is accessed from thectx.accountsstruct. - The code then iterates through the remaining accounts in the
ctx.remaining_accountsiterator. - For each account in the iterator, there is a comment indicating that something can be done with the account. The available fields for each account include:
data: The data associated with the account.lamports: The number of lamports (Solana's native currency) in the account.owner: The program that owns the account.executable: Indicates whether the account's program is executable.rent_epoch: The epoch at which the account was rented.key: The public key of the account.is_signer: Indicates whether the account is a signer.is_writable: Indicates whether the account is writable.
- Finally, the function returns
Ok(())to indicate successful execution.
In summary, this code snippet demonstrates how to use the Anchor framework to iterate through the remaining accounts in the context and access their fields for further processing.
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