Collections of Swift

Advantages of collections:

`var collectionArray = [\"iOS\", \"Flutter\", \"iOS\", \"Android\", \"Web\"]`
`collectionArray.map{$0.uppercased()}`	`Output: [\"IOS\", \"FLUTTER\", \"IOS\", \"ANDROID\", \"WEB\"]`
`collectionArray.filter{$0 == \"iOS\"}`	`Output: [\"iOS\", \"iOS\"]`
`Array(collectionArray.reversed())`	`Output: [\"Web\", \"Android\", \"iOS\", \"Flutter\", \"iOS\"]`
`collectionArray.removeAll(where: {$0 == \"iOS\"})`	`Output: [\"Flutter\", \"Android\", \"Web\"]`
`collectionArray.contains{$0 == \"Web\"}`	`Output: true`
`collectionArray.firstIndex{$0 == \"iOS\"}`	`Output: 0`
`collectionArray.lastIndex{$0 == \"iOS\"}`	`Output: 2`
`collectionArray.max(){$0.count < $1.count}`	`Output: Flutter`
`collectionArray.min(){$0.count < $1.count}`	`Output: iOS`
`collectionArray.allSatisfy{$0 == \"iOS\"}`	`Output: false`
`collectionArray.prefix(2)`	`Output`: `[\"iOS\", \"Flutter\"]`
`collectionArray.suffix(2)`	`Output: [\"Android\", \"Web\"]`
`collectionArray.popLast()`	`Output: Web`
`collectionArray.removeLast()`	`Output: Web`
`collectionArray.removeFirst()`	`Output: iOS`
`collectionArray.remove(at: 2)`	`Output: iOS`
`collectionArray.compactMap{$0 == \"iOS\"}`	`Output: [true, false, true, false, false]`
`collectionArray.flatMap{$0 == \"Android\"}`	`Output: [false, false, false, true, false]`

Collections of swift