SwiftAnimations Description SwiftAnimations it's a library created to visualize changes to array. It might be a helpful tool for studying sorting algorithms. You can find out source code with a playground

Imagine that you want to be able to access the largest element in a stack. I know you were dying to do it ! You already have implementation of the stack class: class Stack<Item> { // initialize an

Write an efficient function that takes stockPrices and returns the best profit I could have made from one purchase and one sale of one share of Apple stock yesterday. func getMaxProfit(_

Description Implement a function that takes in a 32 bit integer and returns another 32 bit unsigned integer that is the floor of the square root of the input Implementation Function can be implemented

It's a continuation of my previous post about implementing delegate pattern in iOS. This time it is written in Swift. App Delegate import UIKit @UIApplicationMain class AppDelegate: UIResponder,

It's been a long time since I had to work with old good Objective-C, the king of brackets [[[[]]]]]]]. I recently had to revisit implementation of one of the fundamental design pattern in iOS, called

This one is tricky! How can you print all those numbers with for loop, enumeration, or similar techniques that would make this task trivial? The answer is recursion. Most computer programming languages

It's not frequently used in a regular job but loved by interviewers. Remember to to represent a bit add 0b to a number. For example 0b1 would be one bit that is equal 1 in decimal value. Bitwise AND The

The Single Responsibility principle tells us to separate responsibilities. But to know what these responsibilities are, we have to look at the bigger picture of our app. The MVC pattern already helps us

Solidity primer 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

I just deployed my first ERC20 token to Ethereum blockchain. PropertyValue SymbolIZX NameIZOTX Total supply100,000.000000000000000000 Decimals18 Token address ERC20 is the most common used interface for

Storing data on a blockchain is non trivial and often expensive task. Fortunately there is a solution to it called InterPlanetary File System (IPFS). I will use it to upload and decentralize my resume.

The code below illustrates how easy is to create a trading bot that buys and sells currency within preset boundaries. In this example it's set to trade CV (Car Vertical) on KuCoin exchange. It sells when

Come check out my very first dapp: I just deployed my very first decentralized application. It's very simple, and lets you save your name on the Ethereum blockchain. Since blockchain is immutable, it means

Deploying contracts on main or test net is very simple. At first you need to make sure you tested thoroughly your Dapp and contracts. Then decide if you want to deploy your contract on main or other type

It's just a quick tip that can save you some time. Whenever you web app calls a contract method, you can't modify the value of the transaction using Metamask! This value has to be specified in your web

Remix IDE Remix IDE is a full featured Solidity smart contract IDE (Integrated Development Environment). It can be used to: Develop smart contracts (remix integrates a solidity editor). Debug a smart

In this tutorial you will learn about Truffle. Truffle is must-have tool for an Ethereum programmer. It serves several purposes: development environment testing framework deployment pipeline Installation

This first part of Decentralized Programming Tutorials. Although I have been programmer for several years, those are my first steps in this exciting space. I appreciate any comments and suggestions that

I hope you will find the information I collected in this post useful. Happy trading ! Remember do your own research and invest only money you can lose! Here are few types collected from over the 20+ sources