Hopefully Triality will be able to build enough of a knowledge base, create a high enough SEO score, and get enough traffic to be extremely google-able! Give it a couple of weeks.


For now, you can post information on Triality as a best bet. But you can also look through the docs at <https://www.cairo-lang.org/docs/> or check out the [StarkNet discord](https://discord.com/invite/uJ9HZTUk2Y). 


ㅤ
_This answer was originally posted on [Triality](https://triality.org/question/223)_

Has anyone figured out a way to search google for questions about the Cairo programming language without getting results that deal with Cairo the city.


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/223)_

Searching for Cairo Questions

Hi, I'm trying to solve a Playground exercise on the [Cairo website](https://www.cairo-lang.org/playground/) named "Conditionals". I don't know how to make OR operator in Cairo. I tried something like that:

```
func abs_eq(x: felt, y: felt) -> (bit: felt) {
    if (x == -y) or (x == y) {
        return (bit=1);
    } else {
        return (bit=0);
    }
}
```

but it gives me an error


`Error: code:12:18: Unexpected token Token('IDENTIFIER', 'or'). Expected: "{".
    if (x == -y) or (x == y) {`

How can I solve it?


Cairo OR operator

Hello guys, does one know how to modify keccak.cairo and/or packed_keccak.cairo to compute a 512bits keccak hash instead of 256 bits?

I'm following a paper that needs 256 bits collision resistance so i need 512 bit keccak. 

There should only a few parameters to change but its quite hard to find them in the Cairo code 

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

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How to modify keccak.cairo and/or packed_keccak.cairo to compute a 512bits keccak hash instead of 256 bits?


When it comes to message cancellation (L1 -> L2) you can cancel a message in the case that:
- There is any kind of censorship on StarkNet (sequencer skipped your tx)
- The L2 contract's `` function flow has an assert that fails

Is this correct? Am I missing any other situations where message cancellation would/wouldn't work?

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

Can you explain about cancellation (L1 -> L2) in StarkNet (sequencer)?

hi guys! is it possible to import local python files into hints?

Like so:
```python
# Cairo here

%{
	import my_python_file.py
	# Python here
%}
```

Is it possible to import local python files into hints?

any idea on why I randomly get `HttpError: Bad Gateway` from starknet js?

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

Why I randomly get `HttpError: Bad Gateway` from starknet js?

What is the cause of this issue and how do you solve it?


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/581)_

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