---
id: object/codeunit/3961
type: object
title: Codeunit 3961 "Regex Impl."
summary: Codeunit 3961 "Regex Impl." in System Application (System.Utilities). 47 public procedures. Present since at least BC23, still in BC30.
tier: official
language: en
tags:
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  - system application
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/System%20Application/App/Regex/src/RegexImpl.Codeunit.al
    title: src/System Application/App/Regex/src/RegexImpl.Codeunit.al (releases/29.x)
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object_type: codeunit
object_id: 3961
name: Regex Impl.
namespace: System.Utilities
app: System Application
extends: null
first_version: "23"
last_version: "30"
present_in:
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---

# Codeunit 3961 "Regex Impl."

> Codeunit 3961 "Regex Impl." in System Application (System.Utilities). 47 public procedures. Present since at least BC23, still in BC30.

System Application · System.Utilities · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/System%20Application/App/Regex/src/RegexImpl.Codeunit.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Access | Internal |

## Procedures

- `GetCacheSize(): Integer`
- `SetCacheSize(CacheSize: Integer)`
- `GetGroupNames(var Array: List of [Text])`
- `GetGroupNumbers(var Array: List of [Integer])`
- `GroupNameFromNumber(Number: Integer): Text`
- `GroupNumberFromName(Name: Text): Integer`
- `IsMatch(Input: Text; Pattern: Text; StartAt: Integer): Boolean`
- `IsMatch(Input: Text; StartAt: Integer): Boolean`
- `IsMatch(Input: Text; Pattern: Text; StartAt: Integer; var RegexOptions: Record "Regex Options"): Boolean`
- `IsMatch(Input: Text; Pattern: Text): Boolean`
- `IsMatch(Input: Text): Boolean`
- `IsMatch(Input: Text; Pattern: Text; var RegexOptions: Record "Regex Options"): Boolean`
- `Match(Input: Text; Pattern: Text; StartAt: Integer; var Matches: Record Matches)`
- `Match(Input: Text; StartAt: Integer; var Matches: Record Matches)`
- `Match(Input: Text; Pattern: Text; StartAt: Integer; var RegexOptions: Record "Regex Options"; var Matches: Record Matches)`
- `Match(Input: Text; Pattern: Text; StartAt: Integer; Length: Integer; var Matches: Record Matches)`
- `Match(Input: Text; StartAt: Integer; Length: Integer; var Matches: Record Matches)`
- `Match(Input: Text; Pattern: Text; StartAt: Integer; Length: Integer; var RegexOptions: Record "Regex Options"; var Matches: Record Matches)`
- `Match(Input: Text; Pattern: Text; var Matches: Record Matches)`
- `Match(Input: Text; var Matches: Record Matches)`
- `Match(Input: Text; Pattern: Text; var RegexOptions: Record "Regex Options"; var Matches: Record Matches)`
- `Replace(Input: Text; Pattern: Text; Replacement: Text; Count: Integer): Text`
- `Replace(Input: Text; Replacement: Text; Count: Integer): Text`
- `Replace(Input: Text; Pattern: Text; Replacement: Text; Count: Integer; var RegexOptions: Record "Regex Options"): Text`
- `Replace(Input: Text; Pattern: Text; Replacement: Text; Count: Integer; StartAt: Integer): Text`
- `Replace(Input: Text; Replacement: Text; Count: Integer; StartAt: Integer): Text`
- `Replace(Input: Text; Pattern: Text; Replacement: Text; Count: Integer; StartAt: Integer; var RegexOptions: Record "Regex Options"): Text`
- `Replace(Input: Text; Pattern: Text; Replacement: Text): Text`
- `Replace(Input: Text; Replacement: Text): Text`
- `Replace(Input: Text; Pattern: Text; Replacement: Text; var RegexOptions: Record "Regex Options"): Text`
- `Split(Input: Text; Pattern: Text; Count: Integer; var Array: List of [Text])`
- `Split(Input: Text; Count: Integer; var Array: List of [Text])`
- `Split(Input: Text; Pattern: Text; Count: Integer; var RegexOptions: Record "Regex Options"; var Array: List of [Text])`
- `Split(Input: Text; Pattern: Text; Count: Integer; StartAt: Integer; var Array: List of [Text])`
- `Split(Input: Text; Count: Integer; StartAt: Integer; var Array: List of [Text])`
- `Split(Input: Text; Pattern: Text; Count: Integer; StartAt: Integer; var RegexOptions: Record "Regex Options"; var Array: List of [Text])`
- `Split(Input: Text; Pattern: Text; var Array: List of [Text])`
- `Split(Input: Text; var Array: List of [Text])`
- `Split(Input: Text; Pattern: Text; var RegexOptions: Record "Regex Options"; var Array: List of [Text])`
- `GetHashCode(): Integer`
- `Escape(String: Text): Text`
- `Unescape(String: Text): Text`
- `MatchResult(var Matches: Record Matches; Replacement: Text): Text`
- `Groups(var MatchesRec: Record Matches; var GroupsRec: Record Groups)`
- `Captures(var GroupsRec: Record Groups; var CapturesRec: Record Captures)`
- `Regex(Pattern: Text)`
- `Regex(Pattern: Text; var RegexOptions: Record "Regex Options")`

Plus 4 local procedures.

## Called by

From the extracted call graph of BC29 (graphify-al on the snapshot checkout): calls whose target is known from a declared type or an `Object::"Name"` argument. Interface dispatch and calls through events are not counted, so the list is not complete.

- [Codeunit 3960 "Regex"](../codeunit/3960.md) (17 calls: `Captures → Captures`, `Escape → Escape`, `GetCacheSize → GetCacheSize`, …)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: none

Source: AL metadata extracted from the code (names, ids, signatures, properties); no code bodies (D10).

## Ask your agent

Procedure bodies are not stored here (D10). The call sections above are our own, per object, from the BC29 call graph. For a procedure body or the calls of one procedure, ask bc-code-atlas (external, by Stefan Maron, MIT; default corpus w1-28), which the bc-observatory plugin connects: `bcatlas_resolve_node(object_type: "codeunit", object_name: "Regex Impl.")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.