Swift init Array with capacity

Question

How do I initialize an Array in swift with a specific capacity?

I've tried:

var grid = Array <Square> ()
grid.reserveCapacity(16)

but get the error

expected declaration 

question from:https://stackoverflow.com/questions/24124417/swift-init-array-with-capacity

Answer 1

Swift 3 / Swift 4 / Swift 5

var grid : [Square]?
grid?.reserveCapacity(16)

I believe it can be achieved in one line as well.