# Provider object: 🔌 connect to the network :

The first thing to do: define with which network you want to interact. With the Provider object, you define the network to use :

`import {Provider} from 'starknet';`

## Connect your DAPP to Starknet testnet 1 & 2 :

`const provider = new Provider({ sequencer: { network: 'goerli-alpha' } }) // for testnet 1
const provider = new Provider({ sequencer: { network: 'goerli-alpha-2' } })  // for testnet 2`

Newton

How do I connect my DAPP to Starknet testnet using starknetjs?

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?

How expensive are each of the operations in terms of number of steps?


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/1033)_

How expensive are bitwise operations (and/or/xor) vs arithmetic in Cairo?

What will the bundler ecosystem look like in AA?

---

This question is participating in [Newton Bounties | Incentivized Test Program](https://www.notion.so/Newton-Bounties-Incentivized-Test-Program-94322ad48e7d40a3adcf36f6b26174cd) Every verified valid question gets $10 USDC (mainnet)

What will the bundler ecosystem look like in Account Abstraction?

I used the Nethermind Warp Traspiler to translate the Solidity to Cairo successfully, but there was a problem with the test. I don't think there is this `warplib` package, `node_module` there is, but there is no python package. How do I generate python packages?


```python
from warplib.memory import wm_new
from warplib.maths.utils import felt_to_uint256
```

### How to represent / my environment
I used python virtual environment to develop cairo, and then I used this tool to convert solidity to cairo. After compiling, I reported an error and saw that `the warp-related package was not found`.

Warp Traspiler error: the warp-related package was not found. How do I generate python packages?

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

hey guys - is there a cheatsheet somewhere will all the most usefull commands? Check logs, check latest version etc?

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

Is there a cheatsheet somewhere will all the most usefull commands


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

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How do I connect my DAPP to Starknet testnet using starknetjs?

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Provider object: 🔌 connect to the network :

Connect your DAPP to Starknet testnet 1 & 2 :

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