Would really like to understand how a full node for Starknet like pathfinder works

How does a full node like pathfinder work

Looking to call the approve and transfer functions for an erc-20 in the same transaction. Thoughts on how to do this?


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/1218)_

Cairo: How can i approve erc20 and transfer in the same transaction?

I'm looking for a StarkNet guide. I'm an experienced CTO and I want to know more about it, check out, and learn more. Also want to get hyped. What can you recommend to read to learn more about StarkNet?

What's the best advanced StarkNet guide?

How to use Access Control in Cairo securely? What library can I use for implementing it?

How to use Access Control in Cairo language securely?

Hey everyone, is it possible to use argentx to sign in/authenticate user to a off-chain api/db

What I want to do is store some data off chain for each user(wallet)

I have seen that metamask/etherem has 'personal_sign' rpc method that can be used for something like this

Is there anything like this available in starknet ecosystem?

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

Is it possible to use ArgentX to sign in user to a off-chain api/db?

Hey team, is the below legit ?https://odyssey.starknet.id/

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

Is starknet.id legit?

How can I prepare my Cairo lang project for an audit?

heyy guys, running into a problem

I have this code :
```struct TokenLedger:
   member token_address : felt
   member drip_amount : Uint256
   member balance : Uint256
end

@storage_var
func tokens_ledger(index : felt) -> (tokenLedger : TokenLedger):
end```

```let (ledger : TokenLedger) = TokenLedger(token_address, drip_amount, balance)
tokens_ledger.write(index, ledger)```
But am getting this error :

```faucet.cairo:94:34: Unexpected '.' after '__main__.TokenLedger' which is struct.
let (ledger : TokenLedger)  = TokenLedger(token_detail.token_address, token_detail.drip_amount, curr_balance)
                                ^*********^

       Failed

Error in plugin Starknet: Failed compilation of 1 contract.```

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