ios - How to set a tag to UICollectionView - SWIFT - Multiple CollectionViews on same screen -

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i have multiple uicollectionview on same screen. know objective-c can set tag of each collectionview code below. can't figure out how same on swift

[self.collectionviewone   settag:1]; [self.collectionviewtwo   settag:2]; [self.collectionviewthree settag:3];  //then inside "cellforitematindexpath" if tag equal then... if(collectionview.tag==1) {     //... } 

self.collectionviewone.tag = 1  if(collectionview.tag == 1) {   //... }

is mean? it's same thing.

that said, why not compare actual objects instead of using tags?

if(collectionview == self.collectionviewone) {   //... }

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