Publishing updates on WordPress often means giving readers a way to subscribe to a newsletter. A WordPress email marketing tool connects those signups to a service that sends campaigns or manages newsletters and contacts on the site. I’ll compare five…
Seeing ADA mentioned alongside Cardano can leave you wondering what the network does. Cardano is a public blockchain where network computers maintain a shared record of transactions. I’ll explain how Cardano processes transactions and how ADA lets holders delegate stake…
When a team plans to analyze personal data, it has to limit exposure without losing the result it needs. Privacy-enhancing technologies (PETs) are methods that let data be used or shared while limiting exposure of the underlying information. This article…
Express servers are written in JavaScript, and you can add type checking to one by writing it in TypeScript instead. The TypeScript compiler checks your code against the types you declare, then turns it into the JavaScript that Node.js runs.…
The Hostinger Premium offer works out to $2.99 a month, with a $143.52 first bill. That upfront total gives me a clearer basis for judging the advertised rate. Look beyond that first bill to the server work the hosting service…
`npm –version` reports npm, not which Node runtime `node` will launch. I value the separate answer from `node –version`: it reports the runtime itself. Choose a Node.js release line before changing the runtime. Compare the LTS and Current labels on…
PostgreSQL and Node.js install separately, and the only thing joining them is a connection string you write by hand. The installer never shows it to you, so a first failure looks like a broken database when the port number is…
Install PostgreSQL 18 on Ubuntu, create a login role, and query it from Node.js with the pg pool. Includes the authentication errors you hit first.
Getting PostgreSQL working with Node.js on macOS means installing the server, creating a database and a role, then connecting from your app. Most people hit the same role error on that first connection, and the fix is creating the right…
A reverted transaction should tell you which rule failed and let your test prove that result. This example uses Solidity custom errors and Hardhat to check an unauthorized withdrawal and a deposit below the contract minimum. Create a contract with…
