swiftxcodeuicollectionviewuicollectionviewlayoutcgsize

CGSize is not accepting `.zero`. Ambiguous use of 'init(width:height:)'

In UICollectionViewDelegateFlowLayout when I am using: 

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    return CGSize(width: 0, height: 0)
}

It works fine.

But when I am trying :

CGSize(width: .zero, height: .zero)

It shows an error as:

Ambiguous use of 'init(width:height:)'

In fact :

CGSize(width: .zero, height: 0)

also works. It just adding both as .zero is not working.

Solution

  • The syntax 

    CGSize(width: .zero, height: 0)

    is not recommended anyway even if it works.

    .zero is a static variable of CGSize and can be used properly

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    return CGSize.zero
}

    or even

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    return .zero
}