Solidity
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Ultimate Guide To Hire A Solidity/Web3 Developer
In this comprehensive guide, I will explore how to hire a Solidity/Web3 developer. Contractor, Partner or Employee The first thing you need to decide is whether you want to hire someone on a permanent basis or not. With Solidity development the contracts don’t tend to get updated once they are deployed so the bulk of […]
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How Wrapped Tokens Like wETH & wBTC Work
In this article we will look at how different wrapped tokens work and where the underlying collateral is stored. What Are Wrapped Tokens? Wrapped tokens are generally ERC20 tokens that represents another underlying asset, typically a cryptocurrency or real world asset. The purpose of wrapping a token is to enable its use within the DeFi […]
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3 Tips For Gas Efficient Solidity Smart Contracts
Here are 3 tips which could be considered the low hanging fruit of gas efficient solidity smart contracts. Use Correct Modifiers & Declarations This is the simplest way to get some small wins with gas optimisation. Go through your contract and define anything that shouldn’t change as constant (or immutable if it is set after […]
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Introduction to Flash Loans | Unleashing Capital On Demand
In this tutorial on flash loans we will be creating a Solidity smart contract which takes a flash loan from Uniswap v3. This allows you to borrow huge amounts of capital with the catch that you have to pay it back in the same block or the whole transaction is reverted. How Do Flash Loans […]
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How To Create Your Own Memecoin With Solidity and Uniswap
In this tutorial we will be creating a permissionless, ERC20 memecoin and deploying it with a Uniswap v3 liquidity pool so users can buy it on the decentralized exchange. This tutorial is for demonstration purposes, don’t speculate on memecoins. James On YouTube Watch On YouTube: https://youtu.be/-bVzqtIa0bc |Subscribe The full source code for this is at: […]
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Advice For Hackathons | 9 Tips For Competing In Hackathons
Hackathons are a great way to socialise with other developers and build projects over a short period of time for fun and profit. James On YouTube Watch On YouTube: https://youtu.be/mnBofeo1Ib0 |Subscribe Work on something you are passionate about This starts with choosing a hackathon that is based on tech that you are interested in. I’m […]
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Solidity vs Vyper
Solidity and Vyper are the two most popular programming languages for blockchain developers on Ethereum. Both of these languages have their own strengths and weaknesses which we will go through to help developers decide which is best suited for their project. Solidity Solidity is the most widely used programming language for developing smart contracts on […]
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Sign In With Ethereum Tutorial
To sign in with Ethereum using Metamask we will be using the ERC4361 specification that allows Ethereum accounts to authenticate with off-chain services using a standard message format. This technology offer users a self-custodial alternative to centralized identity providers that generally use email:password credentials. In Web3 applications we can improve user experiences and establish a […]
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Solidity Callback | Solidity Tips & Examples
A callback function in Solidity allows us to pass a function reference from one contract to another and have it execute as part of an atomic transaction. Let’s first take a look at an example from the Solidity Snippets Github repo. Full code at: https://github.com/jamesbachini/Solidity-Snippets/blob/main/contracts/Callback.sol This code is an example of how contracts can interact […]
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Strings in Solidity | Solidity Tips & Examples
A string in Solidity is a data type used to store text. Working with strings in Solidity can be challenging due to the limitations and efficiency required by the Ethereum virtual machine. This article aims to provide a comprehensive guide on how to use strings in Solidity, covering their properties, limitations, and best practices for […]
