if I understand correctly,for now `deploy` transactions not require a fee (from:https://medium.com/starkware/starknet-alpha-0-9-0-dce43cf13490 fees part),in a future version update the account deployment will be charges  (from the end of the StarkNet Alpha version 0.10.0 update notes article: https://medium.com/starkware/starknet-alpha-0-10-0-923007290470)
Thank you😀 🤝

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

Newton

Hey! I hope I'm at the right channel 🙂 I had a ques about contract creation gas fees. are there none? I can deploy to goreli starkent w/o any fees but couldnt find any doc

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

What are gas fees in StarkNet?

What are Event Indexers in Cairo lang? What is a StarkNet indexer?
Can you explain more about how it work and is there any difference between StarkNet indexer and Solidity once?

What are Event Indexers in Cairo lang? What is a StarkNet indexer?

Is there a list of this compiled somewhere? Thanks


ㅤ
_This question was originally posted on [Triality](https://triality.org/question/1075)_

Where can I find a list of decorators available in Cairo?

test another new question new

Can I add Kakarot to my metamask?

Hey guys, has anyone had `get_caller_address` problems in devnet ? I feel like it's returning address 0 when it shouldn't so I made this small contract to test it

```%lang starknet

from starkware.cairo.common.cairo_builtins import HashBuiltin

from starkware.starknet.common.syscalls import (get_caller_address)


func caller_addr() -> (res: felt) {
}



func fn_to_be_called{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr: felt}() {
    let (caller) = get_caller_address();
    caller_addr.write(caller);    

    return ();
}


func get_caller_addr{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr: felt}() -> (caller_addr: felt) {
    let (caller) = caller_addr.read();

    return (caller_addr=caller);
}```

and indeed `get_caller_addr` return address 0 after I called `fn_to_be_called` in the devnet. This is causing some problems in more complex contracts of course. Is it just me ?



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

Has anyone had `get_caller_address` problems in devnet ?

Are there situations in which we prefer declaring variables as `local` vs `tempvar`?
I understand that both are used to avoid variables being revoked, curious to know if they are different in any way
Thread


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

Are there situations in which we prefer declaring variables as `local` vs `tempvar`?

Hi team. How can I use start_prank with deploy_contract? Since get_caller_address() works in constructor now, I need a way in protostar to set caller address without having contract address. May be a 'caller' argument in deploy_contract cheatcode works best

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

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What are gas fees in StarkNet?

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