Hi,
`invoke` like in `invokeFunction` on the Provider ? 
1- There is nothing wrong about using strings. You should use string as you can see from the type that is used in the `invokeFunction` here https://github.com/0xs34n/starknet.js/blob/b4785793ea912dc8562de4c69b0dcbda4358e144/src/types/lib.ts#L20
2- The correct way to proceed (assuming you want to write to the blockchain) would be (1) create an account and (2) `execute` a contract function from that account. But before that, did you connect to your wallet? How did you do that? The way it works is the transaction needs to be signed by the user and the easiest way is definitely to ask your wallet to sign it for you.
3- You also need to check the version of starknet-js. What version are you using?
4- If you are stuck, there are several things you could do: (1) find an example and make sure it works; (2) explain where you are stuck (3) provide the code extract and the exact error message you get in details

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

Newton

Hi everyone,

When i try to invoke my functions with arguments from my frontend app using starknetjs, i get error invalid character, which i presume is an issue from my function accepting felt, but i'm passing texts. Is there any way to convert to felts from the browser or does starknetjs do this by default?

Anyone knows how i can solve the error?

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

How to fix invalid character error while invoking starknetjs frontend app in Cairo?


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 have a question about how to print "Hello World" in Cairo 1. How do I log/print ?

How do I log/print in Cairo 1.0?

I'm trying to use Nile (StarkNet).
I send this function call : 

```cairo
func setBaseURI{pedersen_ptr: HashBuiltin*, syscall_ptr: felt*, range_check_ptr}(
    baseUri_len: felt, baseUri: felt*
)
```

The only thing that would get processed is 

```
nile send account mycontract setBaseURI 3 1 1 1
```

but I don't think that's the right way. How do you pass an array of felt to call with Nile?

How can I pass an array of felt to call with Nile in StarkNet?

How do I import a uint256 in Cairo? 


And what is the best practice for figuring out where to find good import libraries?


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/375)_

How to import uint256 in Cairo?

I have a switch statment where I need to set two distinct, values so thought I would use a tuple  or a struct but I keep getting:

For a struct

`Expected a 'felt' or a pointer type. Got:<TYPE PATH> `

For a tuple

`Expected a 'felt' or a pointer type. Got:(felt,felt) `

This is with the unset tempvar being declared before the branching, and being set in each of the paths. 


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

A switch statement in Cairo lang to set two distinct values

How does Account Abstraction improve the UX compared to other methods?

---

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)

How does Account Abstraction improve the UX compared to other methods?

Trying to install warp with command `yarn global add @nethermindeth/warp`

after successful install I try:
`warp install --verbose`
get this error:

```
zsh: command not found: warp
```


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