for ArgentX supports, you may get better answers in their server. pls check it too 🙂

https://discord.com/invite/GWSyrHg

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

Newton

does anyone know how to import an account to ArgentX by private key?

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

Does anyone know how to import an account to ArgentX by private key?

What is the technical difference between Solidity -> Cairo transpiler and ZK-EVM Kakarot for StarkNet? Both of them interpret Solidity into Cairo and it can help Solidity developers to use StarkNet. 

But really, how does [Kakarot](https://github.com/sayajin-labs/kakarot) compare to [Nethermind's Warp](https://github.com/NethermindEth/warp)?

What is the technical difference of Kakarot compare to Nethermind's Warp?

Is Kakarot a Starkware project? 

I'm very curious: does Cairo have any logic operators? I found bitwise_or bitwise_and etc. but it is not wokring if I want to do something like

if (x == y) OR (x == -y) { ... }

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

Does Cairo Lang have any logic operators?

![img](https://sun9-13.userapi.com/impg/9YrwMdCKAVbgBRKmMdGysFrP3qhbHWBiTNgp3A/64s3EVNAEpE.jpg?size=1158x874&quality=96&sign=f55c859f079b65212bc744b47e7bb7af&type=album)
Is there a plan to get better visibility when a transaction got received but not placed into a block?
For the moment we only know that it is RECEIVED but have no clue if it’s been discarded because of missing constructor params or if it’s just late:

```python
{
	transaction_hash: '0x3d26af3d7a8f17ea28c2a71a250fd8c5dcd162b779051fd36a3bfcd9f130fab',
	actual_fee: undefined,
	status: 'RECEIVED',
	status_data: undefined,
	messages_sent: [],
	events: [],
	l1_origin_message: undefined
}
```

upd: I noticed we are notified when we make an error, but:

1. we don’t know what’s happening between `RECEIVED` and `REJECTED | ACCEPTED_ON_L2`, it’d be nice to be able to monitor a bit more preceisely where’s the transaction in the pipeline

2. the error message is often cryptic and not human readable, ex:

```python
Error: REJECTED: TRANSACTION_FAILED
Error at pc=0:1073:
An ASSERT_EQ instruction failed: 9:6 != 9:5.
```

Is there a way / tool to be able to debug this kind of failed transactions?

A plan to get better visibility when a transaction got received but not placed into a block?


What kind of efficiency gains can one expect from writing the contracts directly in Cairo as opposed to transpiling with warp?

What are the efficiency gains of direct Cairo vs. transpiling with warp?

I'm new to Cairo and I want to know what is the difference when I write `let x = 1;` and `tempvar x = 1;`. Is there any difference in Cairo Lang between let and tempvar?

Cairo: let vs tempvar what is the difference?

1. What’s the difference between AA (Abstract Account) and EOA (Externally Owned Account)?

2. What is an abstract account? Where is the account address derived from? Does the account address also come from the mnemonic and the private key?

3. What is multi-call? What will it bring to UX?

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Does anyone know how to import an account to ArgentX by private key?

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