Apple says: You can use a CollectionOfOne instance when you need to efficiently represent a single value as a collection. In simple words by using CollectionOfOne we can use any single value as collection Suppose take an Example I have array of users : let arrUsers = ["Pawan", "John", "Mike"] …

First question how to prevent duplicate entries in core data?

We use to import modules in our Swift file like: import UIKit But what if I say we can import specific modules in our file instead of importing the entire module

Many times we have to use multiple loops in our project like below: - for i in 1...10 { print ("loop 1 at \(i)") for j in 1...5 { if i == 5 { break } print ("loop 2 at \(j)") } } Now case is that I want to…

What is intrinsicContentSize? Apple says: The natural size for the receiving view, considering only properties of the view itself. In simple words, it is the minimum size that UI Control needs to display. Confused??? Let me give a simple example

We all know that we use print function to print a message into the Xcode debug console print("Hello world") We can use also Dump for same propose but print() simply outputs the class name and dump() outputs the whole class hierarchy.

Computed property A computed variable behaves syntactically like a variable but does not actually require storage. computed property just recalculate the block of code whenever it’s called and returns the value. In short, “A computed property is one that runs some code in order to calculate the value.” Stored property The simplest form of…