Range operator (1. 5)

Range operators is a shortcuts for expressing a range of values.

• Closed range a. b
• Half-open range a..
• Half-open range used on an array
• One-sided-ranges [a. ] and [. a]
• Further reading

Closed range a. b

for i in 1. 4  print(i) > // 1 // 2 // 3 // 4 

Half-open range a..

for i in 1..4  print(i) > // 1 // 2 // 3 

Half-open range used on an array

let players = ["Ayesha", "Beatrix", "Chris", "Daisy"] for i in 0..players.count  print("Player \(i + 1) is \(players[i])") > // Player 1 is Ayesha // Player 2 is Beatrix // Player 3 is Chris // Player 4 is Daisy 

One-sided-ranges [a. ] and [. a]

let players = ["Ayesha", "Beatrix", "Chris", "Daisy"] print(players[2. ]) // ["Chris", "Daisy"] print(players[. 2]) // ["Ayesha", "Beatrix", "Chris"] print(players[..2]) // ["Ayesha", "Beatrix"] 

Further reading