
The ABI of your warp’d Cairo contract is different for two reasons:
1. Cairo doesn’t allow overloading, so we append the EVM function selector of the function to its name to avoid collisions.
2. Cairo doesn’t have the same types as Solidity.

If you try to interact with your warp’d contracts through warp cli or hardhat- warp then it does the automatic ABI translation for you.

victorforissier.eth


My ABIs will be same right? In UI I am assuming I wont have to make any changes

Hey this message looks very confusing.
`GatewayError: {'contract_address': ['Expected hex string, got: "0x01C438231cD70f47d1acB8404E51734c1Fb4d79AC55813b3E861fB1EF78Da0D6".']}`

Any hints on this?

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

CairoLang error: `GatewayError: {'contract_address': ['Expected hex string, got: 

﻿  



ㅤ
_This question was originally posted on [Triality](https://triality.org/question/882)_

How can i learn Cairo with Python base?

How would I go about passing a function as a parameter to a function. Ex map(function, array)


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/313)_

Cairo Passing Functions

Does anyone know how I can create an array and populate it in the python hint?
Basically something like


```cairo
let (my_array: felt*) = alloc()
%{
  ids.my_array = [1, 2, 3]
%}
```


How can I create an array and populate it in the hint Cairo lang/Protostar?

![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?

Hi, has anyone implemented a minimal proxy (also known as clones), in Cairo? I would like to see an example. I can only find examples for upgraded contracts. 

The idea is to deploy multiple proxy instances pointing to the same implementation contract. 

Something similar to OZ's Clones.sol on Solidity:
https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/proxy/Clones.sol

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

Has anyone implemented a minimal proxy in Cairo lang?

For an array in Cairo, since there is no inherent structure, removing an item from an array means all of the other items after the removed item must be moved, since this is on the blockchain that can be extremely costly. What is the best way to handle this? Should the removed item just be replaced with an empty placeholder? What is the right way to handle this?


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/224)_

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My ABIs will be same right? In UI I am assuming I wont have to make any changes

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