---
title: "replacing(_:with:subrange:maxReplacements:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/rangereplaceablecollection/replacing(_:with:subrange:maxreplacements:)-5mdsz"
---

# replacing(_:with:subrange:maxReplacements:)

Returns a new collection in which all occurrences of a sequence matching the given regex are replaced by another collection.

## Declaration

```swift
func replacing<Replacement>(_ regex: some RegexComponent, with replacement: Replacement, subrange: Range<Self.Index>, maxReplacements: Int = .max) -> Self where Replacement : Collection, Replacement.Element == Character
```

## Parameters

- `regex`: A regex describing the sequence to replace.
- `replacement`: The new elements to add to the collection.
- `subrange`: The range in the collection in which to search for regex.
- `maxReplacements`: A number specifying how many occurrences of the sequence matching regex to replace. Default is Int.max.

## Return Value

Return Value A new collection in which all occurrences of subsequence matching regex in subrange are replaced by replacement.