Swift Operators - Basic Part 3 (Range operators in swift)

Range Operators:

• Closed Range operators 
• Half-Open Range Operators
• One-Sided Ranges

Closed Range Operators: 

• a...b
• It defines a range starting from a to b. 
• it includes the values of  a and b
• value a must not be greather than b

Usage:  for index in 1...5

Half-Open Range Operators: 

• a..
• It defines a range starting from a to b. 
• But it does not include b
• It is very useful, when working with the arrays. Reason it starts from 0 to count

   Usage: for index in 0..

One Sided Range operators 

Usage: 

   for name in namesArray[2...] {} it returns index 2 from till the end of array.

   for name in namesArray[...2] {} it returns index 0 from index 2. 

 

Example: 

let myRange = ...5 

range.contains(4) ==> true 

range.contains(11) ==> false 

range.contains(-4) ==> true

Logical Operators: check my previous blog post