Is it possible to call two different functions in one transaction?

[gregnazario]

From DjBarons on Discord

Is it possible to call two diffrent functions in one tx?

[gregnazario]

Move scripts

Yes, it's possible with a Move script. Check out about Move scripts here:

https://aptos.dev/move/move-on-aptos/scripts/

Move script Example

script {
  use aptos_framework::aptos_account;

  /// Transfers the same amount to two accounts
  fun transfer_two<Coin>(caller: &signer, receiver1: address, receiver2: address, amount: u64) {
    // Send amount to receiver1
    aptos_account::transfer_coins<Coin>(caller, receiver1, amount);

    // Send amount to receiver2
    aptos_account::transfer_coins<Coin>(caller, receiver2, amount);
  }
}

Typescript Associated:

First precompile the script above:

# Create a directory for the script
mkdir temp
cd temp

# Initialize the directory
aptos move init --name script
{
  "Result": "Success"
}

# Write script into sources/transfer_two.move
# Do this with the editor of your choice

# Compile the script
aptos move compile
Compiling, may take a little while to download git dependencies...
UPDATING GIT DEPENDENCY https://github.com/aptos-labs/aptos-core.git
INCLUDING DEPENDENCY AptosFramework
INCLUDING DEPENDENCY AptosStdlib
INCLUDING DEPENDENCY MoveStdlib
BUILDING script
{
  "Result": []
}

# Convert to hex to be used in the SDK
cat build/script/bytecode_scripts/transfer_two.mv | xxd -p | tr -d '\n'
a11ceb0b0600000006010002030206040802050a0f07191d0836200000000103010100000204060c0505030001090003060c05030d6170746f735f6163636f756e740e7472616e736665725f636f696e73000000000000000000000000000000000000000000000000000000000000000101000001090a000b010a0338000b000b020b03380002

Now we go to typescript

  // Save the script as hex
  const script = "0xa11ceb0b0600000006010002030206040802050a0f07191d0836200000000103010100000204060c0505030001090003060c05030d6170746f735f6163636f756e740e7472616e736665725f636f696e73000000000000000000000000000000000000000000000000000000000000000101000001090a000b010a0338000b000b020b03380002";

  // Initialize your account and the receiver addresses
  const sender = Account.fromPrivateKey(...);

  // Build the transaction
  const transaction = await aptos.transaction.build.simple({
    sender: sender.accountAddress,
    data: {
      bytecode: script,
      typeArguments: ["0x1::aptos_coin::AptosCoin"], // Transfer APT
      functionArguments: ["0x1", "0x2", 500], // Send 0.000005 APT to 0x1 and 0x2
    },
  });
  
  // Sign and submit the transaction
  const pendingTransaction = await aptos.signAndSubmitTransaction({ signer, transaction });

  // Wait for the transaction to finish
  const response = await aptos.waitForTransaction({ transactionHash: pendingTransaction.hash });
  // At this point your transaction is done!