Solidity Ethereum – code a voting smart contract
by Learn how to create a secure voting smart contract in Solidity for Ethereum using NodeJS and Hardhat ensuring best practices including blockchain unit testing. Code …
Tag: javascript
NodeJS – Plot Ethereum price on a series chart
Let’s explore together how to use CanvasJS in order to create a historical series chart of the Ethereum price (in EUR). We will use an …
Use NodeJS to retrieve current Ethereum price
Want an easy way to get ETH price in NodeJS? This coding tutorial is for you! We will use 2 free APIs in order to …
Javascript / Linux / Snapcraft
Crafting a Snap package from a NodeJS application
Snaps are purposefully designed to be easy to use and maintain, offering added benefits of security and scalability. Encapsulating your NestJS app into a snap …
Your first Solidity smart contract with Hardhat
It couldn’t be easier to write a smart contract and test it in NodeJS. Hardhat is a library which facilitates creating, publishing and testing a …
RavenDB many to many relationships – the most efficient way
In my last article I showcased a very straightforward way of implementing a one to many relationship in RavenDB with an index. This is the …
RavenDB how to model one-to-many relationships
One-to-many relationships are a standard norm in SQL databases. Going noSQL doesn’t mean you won’t be able to model such a relation. On the contrary, …
Development / General / Javascript / NestJS / RavenNest / Typescript
How to implement RavenDB suggestions with NestJS
Hey there! Since I will be away for a couple of weeks, I’d like to share with you an easy implementation of RavenDB suggestion capability …
NestJS / RavenDB / RavenNest / Typescript
Easy way to implement repository pagination (RavenDB + NestJS tutorial 7)
We are going to learn how to add support for pagination when retrieving a large list of documents with RavenDB and NestJS, the smart and …
Development / NestJS / RavenDB / RavenNest / Typescript
Many to one field GROUP BY using RavenDB index
Performing a GROUP BY on a single field is pretty easy. The plan today is to leverage an advanced map reduce index to GROUP BY …
