You need to copy pathfinder’s database file to the new server. It will be named according to the network you are running, like:

- mainnet.sqlite
- goerli.sqlite

When starting the node on the new server, you should inform it where the copied database file is located by using the --data-directory <database-filepath> configuration option.

How do I move my Pathfinder node to another server / disk?

What is the maximum value a `uint` can store?

I need to understand a couple of things:

1. What is the maximum value `a felt` and `uint` can store?
2. Are the maximum values stored in felt and uint the same?

---
This question is participating in[ Newton Bounties | Incentivized Test Program](https://newtonso.notion.site/Newton-Bounties-Incentivized-Test-Program-94322ad48e7d40a3adcf36f6b26174cd) Every verified valid question gets $10 USDC (mainnet)

What is the maximum value an uint and felt can store in Cairo Language?

Hello, I am facing an issue with `starknet-devnet (v0.3.1)` . I do not manage to run RPC `starknet_addInvokeTransaction` with positional parameters; yet it works with pathfinder and other vers like `starknet_estimateFee`. It returns `int() can't convert non-string with explicit base`. It is working fine on GOERLI. I have document the case on the repo https://github.com/Shard-Labs/starknet-devnet/issues/282. Does anyone have an example of a positional request to `starknet_addInvokeTransaction` on devnet that is working? The test inside the testsuite is also using named parameters. Thank you for your help

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

Does anyone have an example of a positional request to `starknet_addInvokeTransaction` on devnet that is working?

protostar is great ❤️ thanks! I'm confused about the deploy command. from which account does it deploy from? also are there no gas fees on goreli when you deploy?

I want to deploy a contract from my own argent wallet I would need to declare + sign a transaction
& I guess use the StarkCurveSigner. What are your thoughts?

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

Which account does protostar deploy command from?

What is an abstract account? Where is the account address derived from? Does the account address also come from the mnemonic and private key?

What is an abstract account? For example: StarkNet Account Abstraction

## What is Kakarot, the zkEVM written in Cairo?


What is Kakarot, the zkEVM written in Cairo?

does anybody have a working local setup ? I find myself having to run tests on the testnet...

I tried both nile and protostar. the problem is that I can set it up but I don't know how to get access to the accounts that are pre-loaded with ETH. new accounts that I create don't have ETH and I don't have a way to transfer ETH to them..

if anybody has a go-to setup that they can share that'd be much appreciated 🙏

How to setup local Starknet node with Account contracts?

>Hello! This is day 5 of the 17 days of the Cairo Challenge. And I have no idea how to solve the [playground](https://www.cairo-lang.org/playground/) exercise “Revoked references”. Can you run these 6 steps and write down what you see?

```
// The scope of some types of references in Cairo (e.g., return values of
// functions and temporary variables) is somewhat restricted.
// For example, a call to another function may revoke those references.
//
// 1. Try to run the following code. You should get an error that `x` was revoked
//    (this is because of the second call to `foo`).
// 2. In simple cases, like this one, the compiler can solve this automatically
//    if the "alloc_locals" keyword is used within the function's scope.
//    Add "alloc_locals;" to the beginning of main(), and make sure the code works.
// 3. To understand what happens behind the scenes, replace "alloc_locals;" with
//    "ap += SIZEOF_LOCALS;" - this command allocates memory cells for local variables
//    (you'll need them below) but doesn't enable the mechanism that
//    automatically resolves revoked references.
//    Trying to run the code now should result in the original error.
// 4. Solve the problem manually by copying the value of `x` to a local variable
//    (e.g., "local x2 = x;"). Local variables are not revoked when functions
//    are called.
//    You can read more about local variables [here](https://www.cairo-lang.org/docs/how_cairo_works/consts.html#local-vars).
// 5. You can even use the same name: "local x = x;".
//    This is called "reference rebinding", where the meaning of `x` changes:
//      Before this line, `x` refers to the return value.
//      After that, `x` refers to the local variable.
// 6. A shorter syntax is "let (local x) = foo(10);" which achieves the same goal.
//    Try it!

%builtins output

from starkware.cairo.common.serialize import serialize_word

// Returns a^3 for a != 0 and 1 otherwise.
func foo(a) -> (res: felt) {
    if (a == 0) {
        return (res=1);
    } else {
        return (res=a * a * a);
    }
}

// Outputs the value 10^3 + 5^3.
func main{output_ptr: felt*}() {
    let (x) = foo(10);
    let (y) = foo(5);
    serialize_word(x + y);
    return ();
}
```

---

> Answers to this question are a part of the ✨ 17 days of Cairo Lang with Playground & Newton. ✨
> 

*Vote for your favorite answer - the best answer will win a $10 award. A new day – a new reward! During the next 17 days, our goal is to attract more developers to the Cairo language and to systematize the knowledge of Cairo lang. [Read rules](https://www.notion.so/17-days-of-Cairo-Lang-with-Newton-550dfcda6a2d449ca468be293c776578)*



Popular tags

How do I move my Pathfinder node to another server / disk?

1 answers

Your answer

Related

You may find useful