---
title: "split(maxSplits:omittingEmptySubsequences:separator:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/bidirectionalcollection/split(maxsplits:omittingemptysubsequences:separator:)"
---

# split(maxSplits:omittingEmptySubsequences:separator:)

Returns the longest possible subsequences of the collection, in order, around subsequence that match the regex created by the given closure.

## Declaration

```swift
func split(maxSplits: Int = Int.max, omittingEmptySubsequences: Bool = true, @RegexComponentBuilder separator: () -> some RegexComponent) -> [Self.SubSequence]
```

## Parameters

- `maxSplits`: The maximum number of times to split the collection, or one less than the number of subsequences to return.
- `omittingEmptySubsequences`: If false, an empty subsequence is returned in the result for each consecutive pair of matches and for each match at the start or end of the collection. If true, only nonempty subsequences are returned.
- `separator`: A closure that returns a regex to be split upon.

## Return Value

Return Value A collection of substrings, split from this collection’s elements.