This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
This tutorial belongs to the Swift series
In Swift, numbers have 2 main types: Int and Double.
An Int is a number without decimal point.
A Double is a number with decimal point.
Both use 64 bits, on modern computers that work with 64 bits, and 32 bit on 32-bit platforms.
The range of values they can store depends on the platform used, and can be retrieved using the int property of each type:
Then, in addition to Int, UInt and Double, we have lots of other numeric types, mostly used to interact with APIs built in the past and that needed to interact with C or Objective-C, and you must be aware that we have them:
Int8is an integer with 8 bitsInt16is an integer with 16 bitsInt32is an integer with 32 bitsInt64is an integer with 64 bitsUInt8is an unsigned integer with 8 bitsUInt16is an unsigned integer with 16 bitsUInt32is an unsigned integer with 32 bitsUInt64is an unsigned integer with 64 bits
UInt is like Int, but unsigned, and its size depends on the current platform the code runs on.
Float is a decimal number with 32 bits.
Then using Cocoa APIs you might use other numeric types like CLong, CGFloat, and more.
You will always use Int or Double in your code, and use those specific types to particular cases.
Any of those types can always be converted to Int and Double types, instantiating a number passing the value inside parentheses to Double() or Int():
let age : UInt8 = 3
let intAge = Int(age)You can also convert a number from Double to Int:
let age = Double(3)
let count = Int(3.14)
This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
flaviocopes.com | Sciencx (2021-05-31T05:00:00+00:00) Numbers in Swift. Retrieved from https://www.scien.cx/2021/05/31/numbers-in-swift/
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.