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We will now briefly understand what is available on the Ganache desktop. On the Desktop, at the top we have several menu options out of which a few are of immediate relevance to us. The menu bar is highlighted in the screenshot below − Clicking on the TRANSACTIONS menu shows all the transactions performed so far. You…

Click on the settings icon at the top right hand side of the screen as shown in the screenshot below − The server settings screen will appear as shown below − Here, you will be able to set the values of server address and the port number for your Ganache server. For the time being,…

Ganache is used for setting up a personal Ethereum Blockchain for testing your Solidity contracts. It provides more features when compared to Remix. You will learn about the features when you work out with Ganache. Before you begin using Ganache, you must first download and install the Blockchain on your local machine. Downloading Ganache You…

The Remix IDE that you have used so far is good enough for development and initial testing of your contract. For real-life contracts, you need to test your functionality against various parameters. Remix cannot create real (non-test) user accounts to transfer funds between them. You have no control over the configuration of the Blockchain created…

When you click the deployed contract, you will see the various public methods provided by the contract. This is shown in the screenshot below. The first method send contains an edit box in front of it. Here, you will type the parameters required by the contract method. The other two methods do not take any parameters. Sending…

In this chapter, we will learn how to deploy contract on Ethereum. Click on the Run menu option to deploy the contract. The following screen will appear. The contract name is shown in the highlighted list box. Below this, you will notice the Deploy button, click on it to deploy the contract. The contract will be deployed…

Once you write the complete contract code, compiling it in this IDE is trivial. Simply click on the Autocompile checkbox in the IDE as shown in the screenshot below − Alternatively, you may compile the contract by clicking the button with the title “Start to compile”. If there is any typo, fix it in the code window. Make…

We will name our contract MyContract as in the following declaration − We will declare two variables as follows − The variable amount will hold the accumulated money sent by the contract executors to the contract creator. The value field will hold the contract value. As the executors execute the contract, the value field will be modified to reflect the balanced contract value.…

Solidity is an object-oriented language especially developed for contract writing. It is a high-level language, which inherits traits from C++, Python, and JavaScript. The Solidity compiler compiles your source code into bytecode that runs on Ethereum Virtual Machine (EVM). For quick understanding of the Solidity syntax, look at the sample code in the IDE. The…

There are several tools available to develop and test contracts. One of the simplest tools is provided on the official Ethereum site itself. The tool is called Remix, we will use this for our contract development. Remix for Contract Development Open the Remix IDE by typing in the following URL in your browser.https://remix.ethereum.org The following screen…