# Foundry

## ***What is Foundry?***

Foundry is a toolset for Ethereum development written in Rust that assists developers in managing dependencies, compiling projects, running tests, deploying contracts, and interacting with blockchains through the command line interface.Additionally, Foundry can directly communicate with Caldera's Ethereum API, enabling the use of Foundry to deploy smart contracts into the Caldera network.

## ***Get Started with Foundry***

1. Install Foundry

* Linux or MaxOS

```Plaintext
curl -L https://foundry.paradigm.xyz | bashfoundryup
```

* Windows

```Plaintext
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs/ | shcargo install --git https://github.com/foundry-rs/foundry foundry-cli anvil --bins --locked
```

2. Create a project

```Plaintext
forge init foundry
```

3. Navigate to the Source in the project and create your smart contract

```Plaintext
cd srctouch MyToken.sol
```

4. Input your smart contract or use the sample contract below.

```Plaintext
// SPDX-License-Identifier: MIT// compiler version must be greater than or equal to 0.8.17 and less than 0.9.0pragma solidity ^0.8.17; contract HelloWorld {    string public greet = "Hello World!";}
```

5. Install OpenZeppelin contracts as a dependency

```Plaintext
forge install OpenZeppelin/openzeppelin-contracts
```

6. Compile contract

```Plaintext
forge build
```

## ***Deploying Your Smart Contract***

Deploying a contract with Forge is a simple process that can be done with a single command. However, it requires an RPC endpoint, a private key that has funds, and any arguments for the constructor of the contract. For example, the `MyToken.sol` contract requires an initial supply of tokens to be specified in its constructor, so the command to deploy it on a network will include the argument of 100.To deploy the `MyToken.sol` contract, use the command that corresponds to the Caldera chain's RPC URL while running the `forge create` command:

```Plaintext
forge create --rpc-url "https://rpc.alienxchain.io/http"--constructor-args 100 \--private-key YOUR_PRIVATE_KEY \src/MyToken.sol:MyToken 
```


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