In this guide, I will discuss how to get the timestamp in Nodejs in its different forms. We can use timestamps in our applications to, for instance, inform users about when an activity was performed. In this guide, I will give you a walkthrough on how to grab the timestamp in Nodejs. We will discuss …
Print Timestamp in Nodejs – Multiple Easy Methods Read More »
In this tutorial, we will discuss the MongoDB select, count, and group by aggregate stages. The aggregate count and group stage together return the number of documents in a group. We will see an example for this topic in this guide so you can get a better idea of how to select count and group …
In this tutorial, we will be discussing the node-fetch module for Node.js. When developing a web application, we do not really build everything from scratch. We might want to sometimes “outsource” a few tasks. For this, we can make use of APIs from other websites that offer services we would like to integrate into our …
The node-fetch Module – Making HTTP Requests in Node.js Using Read More »
In this tutorial, I will discuss what is a cluster in MongoDB. I will also discuss the different types of clusters. In MongoDB, we use the word “cluster” to denote either a replica set or a sharded cluster. We will learn both these clusters in this tutorial detail in detail. Both these clusters have their …
Cluster In MongoDB And Different Types Of Clusters In MongoDB Read More »
In this tutorial, we will learn about sharding in MongoDB. It is time we learn an intermediate-level topic. Sharding in MongoDB is one such topic. Now, sharding in layman’s terms means that mechanism that stores data on multiple machines. This is done to feed the growing demand of the growth of data. Let us dive …
In this article, I will explain how to solve transaction errors in Solidity. This guide aims to provide examples of how to solve transaction errors in Solidity. So, let us get this guide started. The Transaction Error in Solidity A transaction error is usually a result when there is an error with a function marked …
In this tutorial, I will teach you how to perform error testing for your smart contract in Solidity. Error testing is a crucial aspect of development especially when it comes to blockchain development. Unlike development using other technologies, blockchain technology charges a fee to modify data on the smart contract. This is done to ensure …
Error Testing Smart Contract in Solidity Ethereum Read More »
In this tutorial, I will help you find records where array field is not empty in MongoDB. We will learn different ways to find records where array field is not empty in MongoDB. This guide aims to provide examples to the readers who want to find records where array field is not empty in MongoDB. …
Find Records Where Array Field is Not Empty in MongoDB Read More »
in this tutorial, I will explain using the findOneAndUpdate() and findAndModify() functions in MongoDB. Both findOneAndUpdate() and findAndModify() functions perform a find and an update operation inside the mongo shell. This guide aims to provide readers with examples to illustrate the usage of the two. Syntaxes for findOneAndUpdate() and findAndModify() Functions Let us take a …
findOneAndUpdate() and findAndModify() in MongoDB Read More »
In this tutorial, I will explain how to print document values in the mongo shell. We will print document values in the mongo shell by using the find() function in MongoDB. the find operation comes with various other functions: find() findOne() findOneAndDelete() findOneAndUpdate() findAndModify() I will cover the first 2 functions on the list in …