This functionality is known as a `multicall` and it allows you to aggregate multiple contract invocations in one top level `call`. This allows you to do various things atomically within a single block and cut down on JSON-RPC interactions.

Most of the AA implementations on StarkNet today come with `multicall` by default: [argent](https://github.com/argentlabs/argent-contracts-starknet/blob/c0720c94f4a063b2b7a563f86784e16fd7c32289/contracts/account/ArgentAccount.cairo#L119) and [open-zeppelin](https://github.com/OpenZeppelin/cairo-contracts/blob/7ef2d361cfbc0aa86d08464e2d220727ab335f70/src/openzeppelin/account/presets/Account.cairo#L92).

By passing in a `CallArray` to these AA contracts we know to loop over the calls and initiate `call_contract` for each thereby bundling the multiple operations.

Does AA support bundling multiple operations at once?
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Does Account Abstraction (StarkNet) support bundling multiple operations at once?

when starknet token?

Hi, I'm using pytest for testing cairo contract. I found that a simple starknet setup and initial call for contract cost 34 seconds. Is there a way to accelerate test?

upd: yes, [this works](https://www.notion.so/Hi-I-m-using-pytest-for-testing-cairo-contract-I-found-that-a-simple-starknet-setup-and-initial-ca-db2282fc02f2463aadaf63eac655df6f). but I found that compiling contract cost 7s and deploying contract cost 25s. These two operations are the most time-consuming

 Is there a way to accelerate pytest for cairo contract?

In the medium article about 1.0.0 this is shown as the syntax for the for loop

```let sum = 0
for x in iter {
  sum = sum + x;
}```

That doesn't compile for me and loops are not mentioned on github release note.

Will recursion still be necessary if they work as they do in other languages? 

Will it be possible to invoke functions from within the loops?

_This question was originally posted on [StarkNet Discord](https://www.newton.so/view?tags=discord)_

Will it be possible to invoke functions from within the loops in Cairo 1.0?

How do I create my own account abstraction using starknetjs?

I am trying to deploy my contract using this tutorial
[https://medium.com/starknet-edu/deploying-to-starknet-with-the-universal-deployer-contract-c6de07092bfb](https://medium.com/starknet-edu/deploying-to-starknet-with-the-universal-deployer-contract-c6de07092bfb)
But as I follow the steps, I got an error at the contract declaration step: `Unitialized Contract`

Trying to deploy contract with Argent guide but got error Unitialized Contract

why does keccak256 replace sha256 in warp transpiler? I want to know: are they technically identical or different?

I am asking because I haven't the support of sha256 on [Github](https://github.com/NethermindEth/warp)

![sha256 is not supported in warp, use keccak256 instead](https://res.cloudinary.com/varga/image/upload/v1671461992/Screen_Shot_2022-12-19_at_18.58.51_dawd8x.png)

why does keccak256 replace sha256 in warp?

Hello guys, I would like to know if CAIRO work in python3.10 venv? Because I have a problem to install python 3.9.


_This question was originally posted on [StarkNet Discord](https://www.newton.so/view?tags=discord)_

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Does Account Abstraction (StarkNet) support bundling multiple operations at once?

Does AA support bundling multiple operations at once?

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