1. Tutorial

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…

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.pragma solidity…

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…

A huge success of Bitcoin raised interest in the minds of several to create their own currencies. Looking at the advantages offered by Bitcoin – a digital currency, people wanted to use the concept of Blockchain in their own applications. People wanted to move out of their physical contracts to smart digital contracts where several…