What is a character ?
Nowadays, what is accepted, is that a character has a code point, an encoding, and that it belongs, to a character set.
A character-set, can specify both the code points, and the encoding, or it … Read More
Category: apple
Optionals in swift a tutorial
In some languages other than swift, a variable or a constant, can or cannot have a value. So a variable or a constant, can be null, if no value was assigned to them, or if set to null.
What … Read More
What is core foundation?
A little bit of history
To understand what core foundation is, let us get back in history a little bit. It was the year 2000, and there were two ways to develop applications, for macOS 10.
On one hand, … Read More
What is NSObject ?
Many object oriented programming languages, have a class, from which all other classes extends.
In general, a class has a set of methods, and variables, which it defines. The variables being the data, and the methods, being the … Read More
How to generate random numbers in swift ?
How to generate random number ins swift
We can generate random numbers in swift by one of these three methods :
- using the
arc4randomlibrary - using the default system random number generator
SystemRandomNumberGenerator - by using GamePlayKit classes that implement the