It’s a collection of 150 swift functional methods with a short description about them. map: Transforms each element in a collection and returns an array containing the results. flatMap (or compactMap in Swift 5.0 and later): Transforms each element in a collection and flattens the results into a single-level array. …

Download video with progress in swift and save it in device permanent storage with an album. In this article, we will see how we can download a video using URLSession and get the progress of downloading. And then we will be saving that video in our device permanent storage. Also…

Few points about the second chapter “Before the Interview” of book “Cracking the Coding Interview”. Reference The chapter “Before the Interview” is picked from Cracking the Coding Interview book written by Gayle Laakmann McDowell. Highlights Acing an interview starts well before the interview itself — years before, in fact. Getting the Right Experience Without a great…

Few points about the second chapter “Special Situations” of book “Cracking the Coding Interview”. Reference The chapter “Special Situations” is picked from Cracking the Coding Interview book written by Gayle Laakmann McDowell. Highlights Testers and SDETs SDETs : They have to be great coders and great testers. Double the prep work! If you are hoping…

Few points about the first chapter “The Interview Process” of book “Cracking the Coding Interview”. Reference The chapter “The Interview Process” is picked from Cracking the Coding Interview book written by Gayle Laakmann McDowell. Highlights The interviewer is looking to evaluate your ability to solve algorithmic problems you haven’t seen before Talk…

We will look at stack and few things about recursion and then some problems to be practiced. Overview To be honest, recursion is the most important topic over all others. You will be using it for binary search, heap, graphs, reversals, dynamic programming and so on. What is Call Stack ? It is a stack that…

Completion and Error Handling — Improving network call from part 1. Using completions and error handlings. In part 1, we saw how to make a network or API call in a very basics way. But in this article, we will try to improve a bit the code. …

In this part, we will look a very basic approach to a network call in swift. In later parts we will look at advanced and nice way. In this article we will look at how we could make a network call in swift for fetching the data from backend services. …

Solutions To Real-World Problems in Swift — This article contains solutions to the few common problems you will face later or early in your carrier 👀 . If you are an iOS Developer, you are going to face these questions in the future or you may have faced these questions already. …