Question

How to get the first N elements from an array in Swift

Answer 1

var arr = [5, 8, 0, 1, 4, 9, 5, 3]
 
var N = 3
 
let firstN  = arr.prefix(N)
 
let newArray = Array(firstN)
 
print(newArray)
 
 
 
 
/*
run:
 
[5, 8, 0]
 
*/

 

70+ SQL courses for beginners and professionals

Answer 2

var arr = [5, 8, 0, 1, 4, 9, 5, 3]
 
var N = 4
 
let firstN  = arr[...(N - 1)]
 
let newArray = Array(firstN)
 
print(newArray)
 
 
 
 
/*
run:
 
[5, 8, 0, 1]
 
*/

 

70+ SQL courses for beginners and professionals