Solidity and Smart contract for beginners

As blockchain technology continues to evolve, so do the tools and languages used to develop applications on top of it. One of the most popular programming languages used for developing modern decentralized applications is Solidity, a language specifically designed for smart contracts. In this blog post, we’ll be looking at what Solidity is and how you can use it to create your own smart contracts. We’ll also discuss the differences between “smart contracts” and “solidity-based smart contracts”, and some of the advantages of using these technologies in your application development. Whether you’re just starting out in blockchain or are already well-versed in its technologies, this blog post should provide useful insights into the world of smart contract development.

What is a smart contract?

A smart contract is a computer protocol intended to digitally facilitate, verify, or enforce the negotiation or performance of a contract. Smart contracts allow the performance of credible transactions without third parties. These transactions are trackable and irreversible. Smart contracts were first proposed by Nick Szabo in 1996.

What is Solidity?

Solidity is a contract-oriented, high-level language for implementing smart contracts. It was influenced by C++, Python and JavaScript and is designed to target the Ethereum Virtual Machine (EVM).

Solidity is statically typed, supports inheritance, libraries and complex user-defined types among other features. The syntax of Solidity is similar to that of JavaScript.

Solidity was created by Gavin Wood, Christian Reitwiessner, Alex Beregszaszi and Yoichi Hirai.

What are the benefits of using Solidity?

When it comes to programming languages for developing smart contracts, Solidity is by far the most popular language. The main reason for this is because it was specifically designed for Ethereum’s blockchain platform. However, Solidity is also a very versatile language that can be used for other blockchain platforms as well.

Some of the benefits of using Solidity include:

-It is a statically typed language, which means that variables can only be assigned a certain type (e.g. string, int, bool) and all type errors will be caught during compilation. This prevents accidental mistakes and makes the code more robust.
-It supports inheritance, meaning that contracts can inherit properties and behaviours from other contracts. This makes code more modular and allows for easy reuse of common functionality.
-It has a large and active community, with many resources available to help developers get started with Solidity.

What are the drawbacks of Solidity?

Solidity is a programming language for writing smart contracts on Ethereum. While it is designed to target the Ethereum Virtual Machine, it is also used for other blockchain platforms. Solidity is influenced by C++, Python and JavaScript and is designed to target the Ethereum Virtual Machine (EVM).

However, despite its many benefits, there are some drawbacks to using Solidity that beginners should be aware of:

– First and foremost, Solidity is a relatively new language. This means that there is still a lack of documentation and resources compared to more established languages like Java or Python. As a result, it can be difficult for beginners to get started with Solidity.

– Additionally, because Solidity is based on Javascript, it inherits some of Javascript’s quirks and inconsistencies. This can make Solidity code harder to read and understand, especially for those who are not familiar with Javascript.

– Finally, due to its flexibility, Solidity can be easy to misuse. For example, it is possible to write very inefficient code that consumes a lot of gas (the currency used on Ethereum). In some cases, this can lead to transactions being delayed or even failing entirely.

How to use Solidity to create a smart contract?

In order to use Solidity to create a smart contract, you’ll first need to install the Solidity compiler. You can do this by visiting the Solidity downloads page and following the instructions for your operating system.

Once you have the Solidity compiler installed, you’ll need to create a new file with a “.sol” extension. This file will contain your Solidity code.

Next, you’ll need to write your Solidity code. The code for a simple smart contract might look something like this:

contract MyContract { function myFunction() public { // … } }

Once you’ve written your code, you’ll need to compile it using the Solidity compiler. To do this, you’ll run the following command:

solc –bin -o output_directory input_file.sol

This will generate a binary file in the output directory that contains your compiled contract code.

Finally, you’ll need to deploy your contract to the Ethereum blockchain. You can do this using a tool like Truffle or Ganache. Once your contract is deployed, it will be accessible to anyone on the Ethereum network.

Alternatives to Solidity

There are a few alternatives to Solidity that are worth considering if you’re just getting started with smart contracts. One option is Vyper, which is designed to be a more user-friendly language for writing smart contracts. Another option is Bamboo, which is designed to be more scalable and efficient than Solidity. Finally, there’s SmartPy, which is a Python-based language that offers an easy way to write and test smart contracts.


In conclusion, Solidity and Smart Contracts are powerful tools that can be used to create truly innovative and secure applications for the Ethereum ecosystem. By understanding the fundamentals of Solidity programming language along with its various data structures, functions and access modifiers, developers can gain a better foundation for creating more complex smart contracts. Furthermore, they should also understand the security implications when designing and deploying them onto an Ethereum network. With a good understanding of these concepts and best practices in mind, anyone can begin their journey into building decentralized applications on the blockchain.

Understanding Polygon (Matic): A Step-By-Step Guide To Developing Your Dapp On The Platform

Are you wanting to build a dapp but not sure where to begin? Polygon (Matic) is an Ethereum-compatible platform that provides developers with the tools they need to make their project come to life. This article will provide a step-by-step guide on everything you need to know about developing on Polygon (Matic), from setting up your environment and writing code, to deploying your dapp and understanding its performance metrics. So if you’re ready to take the plunge into blockchain development, let’s get started!

Introduction to Polygon (Matic)

Polygon, formerly known as Matic Network, is a Layer 2 scaling solution that enables fast, secure, and low-cost Ethereum transactions. Polygon is the first well-functioning protocol that offers scalability without compromising on decentralization or security.

The Polygon team is composed of some of the most experienced individuals in the blockchain space. The team has been working on scaling solutions for the Ethereum network since 2017 and has been instrumental in the success of several projects, including Plasma Cash and xDai Chain.

Polygon scales Ethereum by utilizing side chains. A side chain is a separate blockchain that runs in parallel to the main Ethereum blockchain. Side chains are connected to the main chain via a set of smart contracts called ” relays.”

Transactions on side chains are confirmed by a set of validators that are different from those who confirm transactions on the main Ethereum blockchain. This allows for near-instant transaction finality with significantly lower fees than those associated with mainnet ETH transactions.

Since side chains are connected to the main Ethereum network, they are also able to interact with other ERC20 tokens and decentralized applications (dApps) built on Ethereum. This makes Polygon an ideal platform for developers looking to scale their dApps while still benefiting from all that Ethereum has to offer.

Setting up the Environment for Developing Dapps on Polygon (Matic)

In order to develop dapps on Polygon (Matic), you need to set up your development environment. This can be done with a few simple steps:

1. First, you need to install the latest version of the Solidity compiler. You can do this by following the instructions here:

2. Next, you need to install the Polygon (Matic) SDK. This can be done by following the instructions here:

3. Once you have installed the Solidity compiler and Polygon (Matic) SDK, you are ready to compile your contracts and deploy them to the Polygon (Matic) network!

Constructing State Channels with Polygon (Matic)

Constructing state channels with Polygon (Matic) is simple and efficient. By using the Polygon client, you can easily create, sign, and deposit your transactions into state channels. The following guide will show you how to do this step by step:

1) First, create a new file called “channel.js” in your project’s root directory. This file will contain the code for your channel contract.

2) Next, paste the following code into your channel contract file:

contract Channel { address public creator; // person who creates the channel uint public nonce; // used to ensure each message is only processed once mapping(address => bool) public participants; // addresses of participants in the channel constructor(address _creator) public { require(_creator != address(0)); creator = _creator; nonce = 0; } function addParticipant(address _participant) public { require(_participant != address(0)); require(_participant != creator); require(!participants[_participant]); participants[_participant] = true; } function removeParticipant(address _participant) public { require(_participant != address(0)); require(_participant == creator || participants[_participant]); delete participants[_participant]; if (creator == _participant && msg.sender == creator && participantCount() == 1) selfdestruct(); } function openChannel() public payable { require(msg.value >= minimum

Using Wallets & Tokens with Polygon (Matic)

When it comes to using wallets and tokens with Polygon (Matic), there are a few things you need to know. First, let’s start with tokens. When you’re using Polygon (Matic), you can use any ERC20 token that’s compatible with Ethereum. This means that you can use popular tokens like WETH, BAT, and renBTC. However, you’ll also need to use a wallet that’s compatible with Ethereum.

There are a few different options when it comes to wallets, but we recommend MetaMask. MetaMask is a browser extension that allows you to easily interact with decentralized applications (dApps). Once you’ve installed MetaMask, you’ll need to add some ETH to your account so that you can interact with dApps. You can add ETH by purchasing it from an exchange or by receiving it from another person.

Once you have ETH in your account, you can add any ERC20 token by clicking on the “Add Token” button in MetaMask and entering the token contract address. For example, the contract address for WETH is 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2. You can find this information for any token on sites like CoinMarketCap or EtherScan.

Now that you have your wallets and tokens set up, you’re ready to start using Polygon (Matic)!

Advanced Procedures & Techniques

Advanced Procedures & Techniques
Now that you have a basic understanding of the Polygon platform, we can dive into some of the more advanced procedures and techniques for developing your dapp.

One of the great things about Polygon is that it is highly modular and customizable. This means that there are many different ways to approach developing your dapp, and that you can tailor the experience to fit your needs.

Here are some of the more advanced procedures and techniques to keep in mind when developing your dapp on Polygon:

1. Use Custom Routes to configure your dapp’s URL structure.
2. Leverage the power of server-side rendering with Node.js and React.js.
3. Use WebSockets for real-time data streaming between your dapp and its users.
4. Implement Authentication & Authorization measures to protect your dapp’s data and resources.
5. Take advantage of Polygon’s scalability features to ensure smooth performance even under high load conditions.

Other Popular Platforms and Comparison of Features

Other popular platforms for developing dapps include Ethereum, EOS, and Tron. Each platform has its own unique set of features and benefits. In this section, we will compare the features of each platform to help you decide which is best for your dapp development needs.

Ethereum is the most popular platform for dapp development. It is an open-source, decentralized platform that runs smart contracts. Ethereum has a large developer community and a wide range of tooling and resources available.

EOS is another popular platform for dapp development. It is a scalable, decentralized platform that supports smart contracts. EOS also has a large developer community and a wide range of tooling and resources available.

Tron is also a popular dapp development platform. It is a scalable, decentralized platform that supports smart contracts. Tron also has a large developer community and a wide range of tooling and resources available.

So, which platform should you choose for your dapp development needs? The answer depends on your specific requirements. If you need a platform that is easy to use and has a large developer community, then any of these three platforms would be a good choice. However, if you require more scalability or advanced features, then you may want to choose Ethereum or EOS over Tron.


With this guide to Polygon, we’ve provided you with the essential foundations of building a successful dAPP on the platform. Whether it’s leveraging Matic-based technologies such as staking and Plasma or deploying your own incentivized models, Polygon makes it all easy. As the world moves towards blockchain technology at an ever increasing rate, Polygon is positioning itself as one of the frontrunners of Layer 2 solutions. So why wait? Get ready to launch your DeFi journey today!

Why Sumeru Digital Solutions Is The Best Blockchain Development Company Out There?

Sumeru Digital is a celebrated blockchain app development services expert. They have developed over 75 Blockchain apps, 25 of which are live in the market with more coming soon. With their unmatched technical expertise and sound strategy, they can build a Blockchain app to suit your needs no matter how large it may be.


As we’ve seen, the blockchain is disrupting a wide range of industries with the potential to be used in many different ways. While the technology has evolved into something past Bitcoin-centric, blockchain companies have begun to appear in various functions. Sumeru Digital is one of these companies who provide blockchain application development services and is currently testing applications for supply chain logistics, fitness/health/nutrition, education, and more!

The Benefits of Blockchain Technology

The advantages of blockchain technology are numerous. For starters, it is a distributed ledger system that eliminates the need for third-party intermediaries. In other words, it enables direct peer-to-peer transactions. Additionally, blockchain technology is highly secure thanks to its decentralized nature and its use of cryptography.


Moreover, blockchain technology is transparent and immutable. This means that all transactions that are recorded on the blockchain can be easily verified by anyone with access to the system. Furthermore, once a transaction is recorded on the blockchain, it cannot be altered or removed. This makes blockchain an ideal platform for executing contracts or carrying out other transactions where trust is essential.


Last but not least, blockchain technology has the potential to greatly reduce costs. By eliminating the need for third-party intermediaries, blockchain can help reduce transaction costs. Additionally, since blockchain systems are typically automated, they can also help reduce operational costs associated with manually processing transactions.

Sumeru Digital: A Leading Blockchain App Development Company

Sumeru Digital is a blockchain app development company that offers a suite of services to help businesses harness the power of the blockchain. We have a team of experienced developers who are well-versed in the latest blockchain technology and can create custom applications that meet your specific business needs.


Our services include:


– Blockchain application development

– Smart contract development

– Dapp development

– Wallet development

– Exchange platform development


We have a proven track record in delivering high-quality blockchain solutions for our clients. Contact us today to discuss your project requirements.

The Process of Developing a Blockchain App

The Process of Developing a Blockchain App


Sumeru Digital offers complete end-to-end blockchain app development services. We understand the process of developing a blockchain app can be complex and time-consuming. Our team of dedicated developers will work with you every step of the way to ensure your app is built on solid foundations and meets all your requirements.


The first step in any blockchain project is to assess business needs and objectives. Once we have a clear understanding of your goals, we can start planning the development process. We’ll take care of all the technical aspects of building a blockchain app, including setting up the right infrastructure, designing intelligent contracts, and developing secure wallets. Throughout the process, we’ll keep you updated on our progress and get your feedback to make sure the end result meets your expectations.


If you’re looking for reliable and professional blockchain app development services, look no further than Sumeru Digital. Contact us today to discuss your project in detail and let us help you turn your vision into reality.

Costs Associated with Developing a Blockchain App

There are several costs associated with developing a blockchain app. The first cost is the development cost itself. This can vary depending on the complexity of the app and the size of the team working on it. The second cost is the hosting cost. This can also vary depending on the size and complexity of the app. The third cost is the transaction fees associated with using the blockchain. This can vary depending on the platform you are using and the number of transactions you are making.


When it comes to developing a blockchain app, there are a few costs that you need to take into account. First, you need to have a strong understanding of the technology behind blockchain in order to create a secure and efficient app. This usually requires hiring expert developers with extensive experience in the field.


Second, you need to incur the costs of running a blockchain network, which can be fairly expensive depending on the size and complexity of your application. Finally, you need to factor in the cost of marketing your app to users and getting them to adopt it.


Overall, developing a blockchain app can be quite costly, but if done correctly, it can also be very rewarding both financially and technologically.


If you’re looking for a blockchain development company that can help you create a cutting-edge decentralized application, then look no further than Sumeru Digital. We have the experience and expertise to take your project from concept to launch, and we’re committed to delivering quality results that exceed your expectations. You can also learn Blockchain development. Contact us today to learn more about our services and how we can help you realize your vision for a groundbreaking DApp.

The Ultimate Guide To Becoming A Smart Contract Developer

Smart contracts are becoming increasingly popular and offer the perfect opportunity for developers who want to work with blockchain technology. In this guide, you’ll get to find out what it takes to become a successful smart contract developer, from building your knowledge base to getting yourself hired by companies.

Introduction to Smart Contract Development

A smart contract is a computer protocol that can be used to automatically facilitate, verify, or enforce the negotiation or performance of a contract. Smart contracts were first proposed by Nick Szabo in 1994 as a way to bring ‘the functionality of formal contracts to electronic commerce.’

The use of smart contracts can potentially enable more secure and efficient transactions by automating key workflow processes and eliminating the need for third-party intermediaries. For example, in the context of financial services, smart contracts could be used to automate the processing of loan applications, KYC (know-your-customer) checks, and fraud detection. In supply chain management, smart contracts could be used to track the movement of goods and automatically trigger payments along each step of the process.

While there are many potential use cases for smart contracts, developing them still requires a fair amount of technical expertise. This guide will provide an overview of what smart contracts are and some tips on how to get started with smart contract development.

Understanding Blockchain and Ethereum Platform

Blockchain is a distributed database that allows for secure, transparent and tamper-proof record-keeping. Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of fraud or third party interference.

Smart contract developers need to be proficient in both blockchain and Ethereum development in order to build decentralized applications. In this guide, we’ll cover the basics of each technology and explain what you need to know to become a smart contract developer.

Blockchain Basics

A blockchain is a linked list of blocks, where each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. Bitcoin was the first application built on top of a blockchain, and it uses its own proprietary form of the technology. Ethereum uses an open-source version of blockchain called Hashgraph.

Ethereum Basics

Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of fraud or third party interference. These apps are built on top of a blockchain, but unlike Bitcoin, Ethereum has its own native programming language (Solidity) which allows for more complex applications.

What You Need To Know To Become A Smart Contract Developer
In order to become a smart contract developer, you need to have a good understanding of both blockchain and Ethereum development. However, if you’re just starting out, don’t feel overwhelmed – there are plenty of resources available to help you learn the ropes. The best

Different Types of Smart Contracts

When it comes to developing smart contracts, there are a few different types that you should be aware of. Each has its own distinct advantages and disadvantages that you should take into account when deciding which route to take.

The three most popular types of smart contracts are ethereum, NEO, and EOS. Let’s take a closer look at each one:


– Ethereum is the most well-known and widely used platform for developing smart contracts. As a result, there is a large community of developers and users to help support you.
– The Ethereum Virtual Machine (EVM) makes it easy to deploy and test your smart contracts.
– You can use Solidity, a widely used programming language, to develop your smart contracts on Ethereum.

– Ethereum can be slow and expensive due to its high demand.
– Smart contracts on Ethereum are immutable, meaning once they’re deployed, they can’t be changed. This can be problematic if you need to make changes down the road.

– Neo is faster and more scalable than Ethereum with the ability to handle up to 10,000 transactions per second.
– Neo uses gas (not ETH) as its currency which means transaction fees are lower than on Ethereum.
– Neo supports multiple programming languages including C#, Java, and Python

Learning the Solidity Language

In order to become a smart contract developer, it is important that you have a strong understanding of the Solidity programming language. This language is used to write contracts on the Ethereum blockchain. While it is possible to write contracts in other languages, such as JavaScript, Solidity is the most popular choice among developers.

There are a few different ways to learn the Solidity programming language. The first way is to find resources online. There are many blog posts, articles, and tutorials that can be found with a simple Google search. Additionally, there are several YouTube channels dedicated to teaching others how to code in Solidity.

Another way to learn this programming language is through online courses. These courses are typically much more comprehensive than blog posts or YouTube videos and will walk you through everything from the basics of the language to more advanced concepts. Some popular online courses include: ‘Learn How To Code: Google’s Go Programming Language’, ‘Udemy – Ethereum Blockchain Developer: Build Projects Using Solidity’, and ‘Hacking Blockchain’.

Finally, if you want to really dive deep into learning Solidity, there are bootcamps and intensives offered by companies such as ConsenSys and Blockgeeks. These programs usually last for several weeks or months and will give you the opportunity to learn from experienced developers while working on real-world projects

Setting up an Environment for Developing Smart Contracts

Before you start developing smart contracts, you need to set up your development environment. This includes installing the necessary software and tools, as well as setting up a test blockchain.

Installing the Software

First, you need to install the Ethereum Wallet and Mist Browser. These are two of the most popular tools for interacting with the Ethereum network.

Next, you’ll need to install an Integrated Development Environment (IDE) like Solidity or Vyper. These IDEs allow you to write and compile smart contracts.

Finally, you’ll need to install a testing tool like TestRPC or Ganache. These tools allow you to create a private blockchain for testing purposes.

Setting Up a Test Blockchain

Once you’ve installed all the necessary software, you’ll need to set up a test blockchain. This can be done using TestRPC or Ganache.

TestRPC is a NodeJS application that creates a virtual Ethereum blockchain. It’s perfect for testing purposes because it’s easy to use and quick to set up. Ganache is another option for setting up a test blockchain. It’s a bit more complicated than TestRPC, but it offers more features and flexibility.

Writing a Smart Contract from Scratch

Developing a smart contract from scratch can be a daunting task, but it doesn’t have to be. With a little bit of know-how and the right tools, you can create a smart contract that is both secure and functional.

In this guide, we will walk you through the process of writing a smart contract from scratch. We will cover everything from setting up your development environment to deploying your contract on the Ethereum network. By the end of this guide, you will have all the knowledge you need to become a smart contract developer.

Deployment of Smart Contracts

When it comes to deploying smart contracts, there are a few things you need to keep in mind. First and foremost, you need to make sure that your contract code is error-free. Secondly, you need to have an Ethereum address that has enough Ether to cover the gas costs associated with deploying the contract. Finally, you need to use a tool like Truffle or Geth to deploy your smart contract to the Ethereum blockchain.

Assuming that your contract code is error-free, deploying a smart contract is relatively straightforward. First, you’ll need to launch an instance of Ethereum geth or Parity. Once geth or Parity is up and running, you can use the truffle console to deploy your smart contract. When using the truffle console, make sure that you’re connected to the same network as your geth or Parity instance. Once you’re connected, simply run the following command:

truffle(default)> migrate –reset –network

This will deploy your smart contract to the specified network. If everything goes according to plan, you should see something like this:

… Running migration: 2_deploy_contracts.js Deploying MyContract… … 0x7df9a87565bef2d99e2e0bae23884625dcf59c73cd4f22b8da12e1a0c26ff622 MyContract

Common Challenges

There are a few common challenges that arise when trying to become a smart contract developer. The first challenge is finding the right tools and frameworks to use. There is a lot of new technology out there, and it can be overwhelming to try and figure out which ones are the best fit for you. Another common challenge is understanding how smart contracts work. They are still a relatively new technology, and there is not a lot of documentation or resources available to help developers get started. Finally, debugging smart contracts can be difficult because of their complexity and the lack of standard tools available.


Becoming a smart contract developer is becoming an increasingly popular and lucrative career choice. There are many different ways to get started in the field, ranging from attending coding bootcamps to teaching yourself with online resources. Whichever path you choose, understanding the basics of blockchain technology and getting familiar with the relevant programming languages will be essential steps on your journey to becoming a successful smart contract developer. With enough effort and dedication, you can position yourself as an expert in this exciting new field.