Convert swift repeating array in objective C

Question

I have swift project. I am stuck at one line to convert in objective c

var bezierPoints = [CGPoint](repeating: CGPoint(), count: 5)

How can I make array in objective C?

Would a C array CGPoint bezierPoints[5]; satisfy your needs? — Martin R
– Martin R, Commented Nov 13, 2016 at 15:35
The best approach depends on what you're actually trying to do. Most likely, you don't need this line at all. — Alexander
– Alexander, Commented Nov 13, 2016 at 16:12

Luca Angeletti · Accepted Answer · 2016-11-13 15:58:04Z

1

In Objective-C you cannot create an array of CGPoint(s) because NSArray can only contain objects.

Anyway you can wrap a CGPoint into a NSValue so

NSArray * points = [NSArray arrayWithObjects:
                    [NSValue valueWithCGPoint:CGPointZero],
                    [NSValue valueWithCGPoint:CGPointZero],
                    [NSValue valueWithCGPoint:CGPointZero],
                    [NSValue valueWithCGPoint:CGPointZero],
                    [NSValue valueWithCGPoint:CGPointZero],
                    nil];

Or as suggested by @Alexander Momchliov

NSArray * points = @[
                     [NSValue valueWithCGPoint:CGPointZero],
                     [NSValue valueWithCGPoint:CGPointZero],
                     [NSValue valueWithCGPoint:CGPointZero],
                     [NSValue valueWithCGPoint:CGPointZero],
                     [NSValue valueWithCGPoint:CGPointZero],
                    ];

edited Nov 13, 2016 at 15:58

answered Nov 13, 2016 at 15:13

Luca Angeletti

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2 Comments

Alexander Over a year ago

Why don't you use an array literal? @[a, b, c]

Luca Angeletti Over a year ago

@AlexanderMomchliov: Because I'm forgetting Objective-C :D Thank you!

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