Metamask: Creating an Ethereum intelligent contraact with EtherScan
As a new developer in Solidity, creating a smart contraction in Blockchain Ethereum can be scary at first. Howver, with the metamask platform and some basic of solidity, you can easily an intelligent contract, that receers from the Metarys.
In this article, we will tell you throw
Step 1: Configure Metamask in Ganache
Before yu start coding your smart contraction, it is essential to configue Metamask on a local Ethereum network using Ganache. Here is as:
- Install Metamask browser extension for Chrome or outer browsers.
- Go to [metamask.io] ( and click “Create Account” in the upper.
- Follow the warnings to configure
Step 2: Configure your solidity compiler
To the crate a smart contractor, you will to install the SOLC compiler. Here is as:
- Install the SOLC compiler use NPM or Yarn running
`Bash
NPM INSTALL SOLC
or
`Bash
Solc Add Wire
Step 3: Create a news solidity contract
Create a newfire contraction.sol' in the directory of your project. This is wheee define define your smarter.
Here is an example of a contraction that can receive from the consumers connected throug methamask:
Solidity
Pragma solidity ^0.8,0;
Import “
Import “./Meta-Mask-bi.json”;
Mycontract {contracty
// Mapping of consumers to the corresponding of the ether
Mapping (Address => Uint256) Public Etherbalads;
Builder () Audience {
// initialize the contraction with an initial balance of 0 ether
Etherbalances [msg.sender] = 0;
}
+
Function receiving ( ) public paying {
// Get the current of the usr who sent the ether
Address Useraddress = msg.sender;
// Add ther recheved to the User Balance
Etherbalads [Useraddress] += msg.Value;
}
// Function to send ether a backmask
SEENDETHER () PUBLIC FUNCTION {
// Get the current of the sender and the recipient
Address reserveddress = msg.sender;
Address ReceptingDress = MSG.SENDER;
// Add thee received to the sender’s balance
Etherbalances [Remerateddress] -= MSG.Value;
Etherbalances [receptoraddress] += msg.value;
// Be the sender has more than 0 ether, transfer theem back tomask
IF (Etherbalances [Rebreeddress]> 0) {
// Create a new contract in Ganache with
Contract from Contractor = new Contract ();
CONTRAT.RECENIVINGETHER (Sender);
}
}
}
`
** Step 4: compile and implement
Compile your code of solidity use the solc:
`Bash
soolc -bin mycontraction.sol
There is following settings that a new ganche project.
- Define
Gaspriceas 20 Gwei (or any of the price of gs, that adapts to your network).
- Create a new account and add -a as an ethhereum.
- Implant your contraction use ganache.
** Step 5: Test and implant
Implant your contractor at Etherum Testnet. You can do by this year a new project at [Ethereum Testnet] (https: //www.testnet.eth.js).
On deployed, you can connect Metamask to your Testnet account Using Metamask.
Step 6: Use methamask to receorts from the usrs
To use the `receiving ‘function, follow these steps:
1.
