First, decide the StarkNet network you wish to run on. You will need access to a trusted Ethereum full node that matches the StarkNet network:

Ethereum mainnet for StarkNet mainnet,
or Goerli Ethereum for StarkNet testnet.
The easiest way is to setup an account with an Ethereum node service such as Alchemy or Infura. Once you have an account setup, take note of the Ethereum RPC url for the network you need.

You can then start a pathfinder node by following their docker guide: https://github.com/eqlabs/pathfinder#running-with-docker



How do I run a Pathfinder node?

How do you write an else if statement in Cairo?


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/419)_

Cairo: Else if statement

gm all! I am working on this project https://github.com/outsider-analytics/ZK-Circuit-Performance-and-Security-Data on a grant from the EF PSE team.  I need to understand what hash types are being used in the STARK proof creations.  I have poured through the docs and can't seem to find it.  I have seen reference to Pedersen and Rescue, but can't find anything definitive.  Can someone point me towards any documentation that can help me?

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

Can anyone point me to Pedersen, Rescue references? StarkNet / Cairo Lang

# Is Kakarot part of the Starknet ecosystem?

Is Kakarot part of the Starknet ecosystem?

hi, i used the starkgate bridge from stark to eth one hour ago. Withdrawal has not occurred yet. How many hours does the process take? My tx hash is: <address>cfa0c02d013658804505506

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

How many time does it take for stark to eth starkgate bridge process?

I have a question about creating elements via a function vs doing them directly. Here's a small gist: [https://gist.github.com/rlkelly/6cc8f4cce06762c3153fc7e3acaf9429](https://gist.github.com/rlkelly/6cc8f4cce06762c3153fc7e3acaf9429)

```
%lang starknet

from starkware.cairo.common.alloc import alloc

struct Foo:
    member val: felt
end

func make_foo(value: felt) -> (foo: Foo):
    let foo = Foo(
        val=value,
    )
    return (foo)
end

func make_foo_array() -> (entry: Foo*):
    let (struct_array : Foo*) = alloc()

    let foo0 = make_foo(0)
    assert struct_array[0] = foo0
    return (struct_array)
end

@external
func test_make_foo{syscall_ptr : felt*, range_check_ptr}():
    let (foo_array) = make_foo_array()
    return ()
end

#   File "starkware/cairo/lang/compiler/preprocessor/preprocessor.py", line 1223, in visit_CodeElementCompoundAssertEq
#  starkware.cairo.lang.compiler.preprocessor.preprocessor_error.PreprocessorError: contracts/tests/test_foo.cairo:22:5: Cannot compare '__main__.Foo' and '(foo : __main__.Foo)'.
```

i'm curious why `__main__.Foo` and `(foo : __main__.Foo)` are typed differently

it appears like `let foo =` and `let (foo) =`  allocate memory differently

Creating Elements via a function

Is there any other way to do 2**n without using `pow.cairo`?

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How do I run a Pathfinder node?

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